USA-Calc

Free Online Tools

220+ tools — converters, reference tables, generators, estimators, and checkers. Free, instant, no account needed.

🔄 Converters (52)💰 Finance & Tax Reference (28)🌟 Lifestyle & Everyday (34)💻 Tech & Developer (37)💼 Career & Jobs (32)🏠 Real Estate (37)
🔄

Converters

Unit, format, and measurement converters for length, weight, temperature, data, and more.

📏
Length Converter
Convert between meters, feet, inches, centimeters, kilometers, miles, and yards instantly.
converter
⚖️
Weight Converter
Convert between kilograms, pounds, ounces, grams, and metric tons.
converter
🌡️
Temperature Converter
Convert between Celsius, Fahrenheit, and Kelvin with real-time results.
converter
🚀
Speed Converter
Convert miles per hour, kilometers per hour, meters per second, knots, and more.
converter
🗺️
Area Converter
Convert square meters, square feet, acres, hectares, and more.
converter
🧴
Volume Converter
Convert liters, gallons, fluid ounces, cups, milliliters, and cubic units.
converter
💨
Pressure Converter
Convert PSI, bar, atmospheres, pascals, mmHg, and other pressure units.
converter
⚡
Energy Converter
Convert joules, calories, kilowatt-hours, BTUs, and electron volts.
converter
🔌
Power Converter
Convert watts, kilowatts, horsepower, BTU/hr, and other power units.
converter
⏱️
Time Converter
Convert seconds, minutes, hours, days, weeks, months, and years.
converter
💾
Data Storage Converter
Convert bytes, kilobytes, megabytes, gigabytes, terabytes, and bits.
converter
🔢
Number Base Converter
Convert decimal, binary, hexadecimal, and octal numbers instantly.
converter
🏛️
Roman Numeral Converter
Convert between Arabic numbers and Roman numerals, up to 3,999.
converter
🔤
ASCII / Character Code Converter
Convert between characters and their ASCII or Unicode code points.
converter
01️⃣
Binary to Text Converter
Convert text to binary code and binary back to readable text.
converter
🎨
Hex Color Converter
Convert between hex color codes, RGB, HSL, and color names.
converter
🖌️
RGB to Hex Converter
Enter RGB values (0–255) and get the hex color code instantly.
converter
🌈
HSL to RGB Converter
Convert HSL (hue, saturation, lightness) color values to RGB and hex.
converter
💻
CSS px to rem Converter
Convert pixel values to rem units based on a root font size.
converter
📅
Unix Timestamp Converter
Convert Unix timestamps to readable dates and vice versa.
converter
📆
Date Format Converter
Convert dates between US, European, ISO 8601, and other common formats.
converter
🌍
Time Zone Converter
Convert times between major world time zones including US, Europe, and Asia.
converter
⛽
Fuel Efficiency Converter
Convert MPG, L/100km, km/L, and miles per liter for vehicles.
converter
🥄
Cooking Measurement Converter
Convert cups, tablespoons, teaspoons, fluid ounces, and milliliters for recipes.
converter
🌾
Flour Weight Converter
Convert cups of flour to grams, ounces, and pounds for baking accuracy.
converter
🧈
Butter Converter
Convert sticks of butter to cups, tablespoons, grams, and ounces.
converter
🔥
Oven Temperature Converter
Convert oven temperatures between Fahrenheit, Celsius, and Gas Mark.
converter
📐
BMI Unit Converter
Convert height and weight between metric and imperial for BMI calculations.
converter
📐
Angle Converter
Convert between degrees, radians, gradians, and turns.
converter
📡
Frequency Converter
Convert Hz, kHz, MHz, GHz, and RPM.
converter
🔩
Torque Converter
Convert Newton-meters, pound-feet, pound-inches, and kilogram-force meters.
converter
💪
Force Converter
Convert Newtons, pound-force, kilogram-force, and dynes.
converter
🧱
Density Converter
Convert kg/m³, g/cm³, lb/ft³, and other density units.
converter
📄
Words to Pages Converter
Estimate how many pages a word count fills at various font sizes and spacing.
converter
📖
Reading Speed Converter
Convert between words per minute and pages, books, or articles per hour.
converter
🔡
Font Size Converter
Convert font sizes between pt, px, em, rem, and percent.
converter
🖥️
Screen Resolution Converter
Convert screen resolutions between different scales and calculate pixel density (PPI).
converter
📺
Aspect Ratio Converter
Calculate missing dimensions from an aspect ratio or find the nearest standard ratio.
converter
🖼️
Image DPI / PPI Converter
Convert image resolution between DPI/PPI and calculate print size from pixels.
converter
📶
Bitrate Converter
Convert between bps, Kbps, Mbps, Gbps, and bytes per second.
converter
🎬
Frame Rate Converter
Convert between common video frame rates and calculate file sizes.
converter
📡
Morse Code Converter
Convert text to Morse code and Morse code back to text.
converter
👟
Shoe Size Converter
Convert shoe sizes between US Men's, US Women's, UK, EU, and cm.
converter
👕
Clothing Size Converter
Convert clothing sizes between US, UK, EU, Italian, and Asian sizing.
converter
💍
Ring Size Converter
Convert ring sizes between US, UK, EU, and inner diameter in mm.
converter
🍷
Wine Bottle Size Converter
Convert between wine bottle sizes — standard, magnum, jeroboam, and more.
converter
🥃
Alcohol ABV / Proof Converter
Convert between alcohol percentage (ABV) and proof (US and UK).
converter
🍸
Proof to ABV Converter
Quickly convert US proof to ABV percentage for spirits and liquors.
converter
🍬
Sugar Measurement Converter
Convert cups of sugar to grams, ounces, and tablespoons.
converter
💡
Illuminance Converter
Convert between lux, foot-candles, and lumens per square meter.
converter
🧲
Magnetic Field Strength Converter
Convert between tesla, gauss, millitesla, and oersted.
converter
💧
Flow Rate Converter
Convert volumetric flow rates between GPM, L/min, m³/s, and CFM.
converter
💰

Finance & Tax Reference

IRS tax brackets, contribution limits, state tax rates, and financial reference tables.

🏛️
2025 Federal Income Tax Brackets
Official IRS 2025 federal income tax brackets for all four filing statuses.
table
📋
2025 Standard Deduction Amounts
IRS standard deduction for 2025 by filing status, including extra amounts for age 65+ and blind.
table
📈
2025 Capital Gains Tax Rates
Long-term and short-term capital gains tax rates for 2025 by filing status.
table
🗺️
State Income Tax Rates 2025
Income tax rates and structures for all 50 states plus DC — flat, graduated, or none.
table
👴
FICA Tax Limits 2025
2025 Social Security wage base, Medicare rates, and FICA contribution limits.
table
💰
401(k) Contribution Limits 2025
2025 IRS contribution limits for 401(k), 403(b), 457(b), and TSP plans.
table
🏦
IRA Contribution Limits 2025
2025 contribution and income limits for Traditional IRA, Roth IRA, and SEP IRA.
table
🏥
HSA Contribution Limits 2025
2025 IRS Health Savings Account contribution limits and HDHP minimums.
table
🏪
FSA Contribution Limits 2025
2025 FSA (Flexible Spending Account) contribution limits for healthcare and dependent care.
table
🎁
Gift Tax Annual Exclusion 2025
2025 IRS gift tax annual exclusion amount and lifetime exemption.
table
🏰
Estate Tax Exemption 2025
Federal estate tax exemption, rates, and portability rules for 2025.
table
👵
Social Security Wage Base History
Social Security taxable wage base from 2015 to 2025.
table
💊
Medicare Surcharge (IRMAA) Thresholds 2025
2025 Medicare Part B and Part D income-related monthly adjustment amounts (IRMAA).
table
📊
RMD Uniform Lifetime Table 2025
IRS Uniform Lifetime Table factors for calculating Required Minimum Distributions.
table
💵
Minimum Wage by State 2025
Current minimum wage rates for all 50 states and DC as of 2025.
table
📊
Credit Score Range Guide
Credit score ranges for FICO and VantageScore, with lending implications at each tier.
table
🏠
Average Mortgage Rate History
30-year fixed mortgage rate averages from 2000 to 2025 (Freddie Mac PMMS data).
table
🏦
Federal Reserve Rate History
Federal Funds Rate target range from 2015 to 2025.
table
📉
Prime Rate History
US Prime Rate from 2010 to 2025 — the benchmark for HELOCs, credit cards, and variable loans.
table
📈
US Inflation Rate History (CPI)
Annual US inflation rate (CPI-U) from 2010 to 2025.
table
📊
CPI Index Values History
Bureau of Labor Statistics CPI-U annual index values 2010–2025 for inflation calculations.
table
💳
Debt Payoff Date Estimator
Estimate when you'll be debt-free based on balance, APR, and monthly payment.
estimator
🏦
Savings Growth Estimator
Estimate savings growth over time with a starting amount, monthly contribution, and interest rate.
estimator
🍎
SNAP Income Limits 2025
SNAP (food stamps) gross and net income limits and maximum benefit amounts by household size.
table
🏥
Medicaid Income Limits by State 2025
Medicaid income eligibility thresholds for adults and children by state.
table
📅
Paycheck Frequency Guide
Number of paychecks per year and conversion factors for weekly, biweekly, semimonthly, and monthly pay.
table
🏦
Bank Routing Number Guide
Routing numbers for major US banks and instructions for finding your routing number.
table
💸
Direct Deposit Timing Guide
How long direct deposit takes and when to expect funds for major US banks.
table
🌟

Lifestyle & Everyday

Date calculators, recipe tools, budgeting, wellness, and daily life utilities.

🎂
Age Calculator
Calculate exact age in years, months, days, and hours from any birthdate.
estimator
📅
Days Between Dates
Calculate the exact number of days, weeks, and months between any two dates.
estimator
📆
Day of Week Calculator
Find the day of the week for any date in history or the future.
estimator
⏳
Days Until Date Countdown
Calculate how many days, hours, and minutes until any future event.
estimator
💼
Work Days Calculator
Count business days between two dates, excluding weekends (and optionally US holidays).
estimator
⭐
Zodiac Sign Calculator
Find your Western zodiac sign and basic personality traits from your birth date.
estimator
🐉
Chinese Zodiac Calculator
Find your Chinese zodiac animal and element from your birth year.
estimator
📖
Reading Time Estimator
Estimate how long it takes to read any text based on word count and reading speed.
estimator
🔢
Word and Character Counter
Count words, characters, sentences, and paragraphs in any text.
checker
✏️
Character Counter
Count characters for Twitter, Instagram captions, SMS, and meta descriptions.
checker
📝
Readability Score Checker
Calculate Flesch-Kincaid readability scores and grade level for any text.
checker
🎓
Writing Grade Level Estimator
Estimate the US grade level required to understand your writing using multiple formulas.
checker
😴
Sleep Cycle Calculator
Calculate ideal wake-up or bedtimes based on 90-minute sleep cycles.
estimator
🍽️
Tip Calculator and Bill Splitter
Calculate tip amount and split a restaurant bill between any number of people.
estimator
🧾
Bill Splitter
Split a bill unevenly between people with different items or percentages.
estimator
🎁
Gift Budget Calculator
Set a total gift budget and allocate amounts per person for holidays or events.
estimator
🍳
Recipe Scaler
Scale a recipe up or down by a factor to feed more or fewer people.
estimator
🥗
Meal Prep Quantity Calculator
Calculate total ingredients needed for meal prep for a week of meals.
estimator
🔄
Ingredient Substitution Guide
Common baking and cooking ingredient substitutions when you're out of something.
table
☕
Coffee Strength Calculator
Calculate coffee-to-water ratios for your preferred brew strength.
estimator
🍷
Wine Pairing Guide
Quick reference for pairing wines with common food categories.
table
🍵
Tea Steeping Guide
Water temperatures and steep times for green, black, white, oolong, and herbal teas.
table
📺
Subscription Cost Audit
Calculate total monthly and annual spending on subscriptions and streaming services.
estimator
📺
Streaming Service Cost Calculator
Compare streaming service costs per month and per hour of content you watch.
estimator
🚨
Emergency Fund Checker
Check if your emergency fund meets the recommended 3–6 months of expenses.
estimator
💎
Net Worth Snapshot
Calculate your net worth from assets and liabilities in 60 seconds.
estimator
💯
Financial Health Score
Score your financial health across savings, debt, emergency fund, and retirement readiness.
estimator
⚡
Home Energy Usage Estimator
Estimate monthly electricity costs for common home appliances.
estimator
💧
Water Usage Calculator
Estimate daily household water consumption and monthly utility costs.
estimator
☀️
Solar Panel Savings Estimator
Estimate solar panel savings, payback period, and 25-year ROI for your home.
estimator
⚡
EV Savings Calculator
Calculate fuel cost savings switching from a gas car to an electric vehicle.
estimator
🚗
Gas vs Electric Car Cost Comparison
Compare 5-year total cost of ownership between a gas car and an EV.
estimator
🌱
Carbon Footprint Estimator
Estimate your annual carbon footprint from transportation, home energy, and diet.
estimator
📱
Phone Plan Cost Calculator
Compare total annual costs of different wireless plans and find the best value.
estimator
💻

Tech & Developer

Password tools, network calculators, SEO checkers, and statistical tools.

🔐
Password Strength Checker
Check password strength, estimate crack time, and get improvement suggestions.
checker
🔑
Password Generator
Generate strong, random passwords with custom length and character set options.
generator
🆔
UUID Generator
Generate UUID v4 (random) identifiers for databases, APIs, and development.
generator
#️⃣
Hash Generator (MD5, SHA-256)
Generate MD5 and SHA-256 hashes from text input.
generator
🔄
Base64 Encoder / Decoder
Encode text or decode Base64 strings in your browser.
converter
🔗
URL Encoder / Decoder
Percent-encode URLs for safe transmission and decode encoded URLs.
converter
🌐
HTML Encoder / Decoder
Convert HTML special characters to entities and back.
converter
{}
JSON Formatter & Beautifier
Format and validate JSON, collapse/expand, and identify syntax errors.
checker
✅
JSON Validator
Validate JSON structure and pinpoint exact errors with line numbers.
checker
📝
Markdown to HTML Converter
Convert Markdown formatting to HTML for web publishing.
converter
🔍
Regex Tester
Test regular expressions against text and see all matches highlighted.
checker
🌐
IPv4 Subnet Calculator
Calculate subnet mask, network address, broadcast address, and usable hosts.
estimator
📡
CIDR Calculator
Calculate CIDR ranges, convert between CIDR and subnet masks.
estimator
📶
Bandwidth Calculator
Calculate transfer time for file sizes at different connection speeds.
estimator
🔍
SEO Meta Length Checker
Check title tag and meta description lengths for optimal Google search display.
checker
📊
Keyword Density Checker
Analyze keyword frequency and density in any text for SEO optimization.
checker
📲
Open Graph Preview
Preview how your page will look when shared on Facebook, Twitter, and LinkedIn.
checker
🐦
Twitter Card Preview
Preview and validate Twitter Card meta tags for link sharing.
checker
📧
Email Subject Line Checker
Check email subject line length against inbox display limits for major email clients.
checker
📵
Email Spam Score Estimator
Estimate email spam likelihood based on subject line words and sender practices.
checker
🧪
A/B Test Significance Calculator
Determine statistical significance for A/B testing with conversion rates.
estimator
📊
Sample Size Calculator
Calculate the minimum sample size needed for statistical experiments and A/B tests.
estimator
📐
Confidence Interval Calculator
Calculate 90%, 95%, and 99% confidence intervals for proportions and means.
estimator
📉
P-Value Calculator
Calculate the p-value from a Z-score or test statistic.
estimator
📊
Z-Score Calculator
Calculate the Z-score for a value in a normal distribution.
estimator
🔔
Normal Distribution Calculator
Calculate probabilities and percentiles for normal distributions.
estimator
🤖
Robots.txt Generator
Generate a robots.txt file with custom crawl rules for search engine bots.
generator
🗺️
Sitemap Size Estimator
Estimate XML sitemap requirements and file size for your website.
estimator
🏷️
Schema Markup Generator
Generate JSON-LD schema markup for articles, FAQs, and review rich results.
generator
🌐
IP Address Lookup Guide
Understanding IP addresses, types, and how to find your public and private IP.
table
📶
Internet Speed Guide
Reference guide for internet speeds, requirements, and what different Mbps levels support.
table
⚡
Network Latency Calculator
Estimate minimum theoretical latency based on geographic distance and transmission medium.
estimator
📊
Core Web Vitals Reference Guide
Google Core Web Vitals thresholds and what they mean for SEO and user experience.
table
⏱️
Page Load Time Estimator
Estimate page load time from total asset size and connection speed.
estimator
☁️
AWS Cloud Cost Estimator
Rough monthly cost estimates for common AWS services and configurations.
estimator
🖥️
Server Cost Estimator
Compare bare metal, VPS, and cloud server monthly costs.
table
⚙️
API Rate Limit Calculator
Calculate API throughput, wait times, and cost at different rate limits.
estimator
💼

Career & Jobs

Salary comparisons, benefits calculators, tax guides, and job offer tools.

💼
Salary Comparison Tool
Compare two job offers side by side with salary, benefits, and perks.
estimator
🤝
Job Offer Net Pay Calculator
Calculate take-home pay from a job offer, accounting for taxes and benefits.
estimator
⏰
Hourly to Annual Salary Converter
Convert hourly wage to annual salary, or salary to hourly rate.
converter
🚗
Commute Cost Calculator
Calculate the true annual cost of your daily commute by car, transit, or both.
estimator
🏠
Remote Work Savings Calculator
Calculate money and time saved by working from home instead of commuting.
estimator
💻
Freelance Rate Calculator
Calculate the hourly rate needed as a freelancer to match or beat a salaried position.
estimator
🎁
Employee Benefits Value Calculator
Estimate the dollar value of benefits like health insurance, 401(k) match, and PTO.
estimator
🏥
COBRA Insurance Cost Calculator
Estimate monthly COBRA continuation health insurance costs after leaving a job.
estimator
📈
Equity Offer Evaluator
Estimate the potential value of startup stock options or equity grants.
estimator
🏦
RSU Value Calculator
Calculate the after-tax value of Restricted Stock Unit grants at vesting.
estimator
✍️
Signing Bonus Net Calculator
Calculate the net after-tax value of a signing bonus.
estimator
📈
Raise Request Calculator
Calculate the monthly and annual impact of a salary raise and build your ask.
estimator
📋
Unemployment Benefits Estimator
Estimate weekly unemployment benefit amounts based on your recent wages.
estimator
📃
Severance Package Evaluator
Evaluate a severance package and compare it to what you might be entitled to.
estimator
⚖️
Contractor vs Employee Calculator
Compare net income as a W-2 employee vs 1099 contractor at the same gross pay.
estimator
⏰
Overtime Eligibility Checker
Check if you qualify for overtime pay under FLSA rules.
checker
🚴
Gig Economy Tax Guide
Key tax rules and estimated quarterly payments for Uber, DoorDash, and freelance income.
table
💡
Side Hustle Income Calculator
Calculate net income and taxes from side hustle earnings alongside a W-2 job.
estimator
⚖️
Labor Law by State Guide
Quick reference for state-specific labor laws on overtime, breaks, and termination.
table
⏱️
Overtime Rules by State
State overtime laws that exceed federal FLSA requirements.
table
🏥
FMLA Eligibility Checker
Check if you qualify for unpaid Family and Medical Leave Act protection.
checker
🏆
Promotion Readiness Checklist
Assess your readiness for a promotion with key criteria managers evaluate.
table
📋
Performance Review Self-Assessment Guide
Framework and prompts for writing an effective annual self-assessment.
table
🗣️
Salary Negotiation Reference
Salary negotiation tactics, market percentile benchmarks, and scripts.
table
🎓
MBA ROI Calculator
Calculate the return on investment for an MBA program over 10 years.
estimator
📜
Certification ROI Calculator
Calculate the return on investment for a professional certification.
estimator
🎯
Skill Gap Analyzer
Compare your current skills to the requirements of a target role.
estimator
🔄
Career Change ROI Calculator
Calculate the financial impact of changing careers over a 10-year horizon.
estimator
🩹
Workers' Compensation Guide
Overview of workers' comp benefits, filing deadlines, and what to expect.
table
🔍
Background Check Guide
What employers typically check, how far back records go, and your rights.
table
💳
Credit Check for Employment Guide
Which states allow employer credit checks and what rights you have.
table
🧪
Drug Test Detection Timeline Guide
Approximate detection windows for common substances in urine, hair, and blood tests.
table
🏠

Real Estate

Home affordability, mortgage tools, property taxes, landlord/tenant guides, and more.

🏠
Home Affordability Quick Check
Estimate how much home you can afford based on income, debt, and down payment.
estimator
📊
Mortgage Rate Comparison
Compare monthly payments and total interest at different mortgage rates.
estimator
📋
Mortgage Loan Type Comparison
Compare FHA, VA, USDA, and Conventional loan programs side by side.
table
🏛️
Property Tax Rates by State 2025
Average effective property tax rates for all 50 states and key exemptions.
table
💰
Down Payment Assistance Programs
State and federal down payment assistance programs for first-time and low-income buyers.
table
🗝️
First-Time Homebuyer Programs Guide
Overview of first-time homebuyer credits, programs, and requirements for 2025.
table
📋
Homestead Exemption Guide
Homestead exemption amounts and eligibility by state for property tax reduction.
table
📄
Closing Cost Guide by State
Average closing costs by state for buyers and sellers in 2025.
table
🚛
Moving Cost Estimator
Estimate total moving costs based on distance and home size.
estimator
🔧
Home Maintenance Budget Calculator
Calculate annual home maintenance budget based on home value and age.
estimator
🏗️
Home Renovation ROI Guide
Average return on investment for common home renovation projects at resale.
table
🛡️
Home Insurance Cost Estimator
Estimate annual home insurance premium based on location, value, and risk factors.
estimator
🔎
Home Inspection Checklist
Essential items to check during a home inspection before purchasing.
table
✅
Home Buying Checklist
Step-by-step checklist from pre-approval to closing day.
table
🌊
Flood Zone Reference Guide
FEMA flood zone categories, flood insurance requirements, and where to check your zone.
table
🌍
Earthquake Risk by State
Seismic hazard levels by state and earthquake insurance considerations.
table
🌀
Hurricane Risk by State
Historical hurricane frequency and impact by coastal state.
table
⚠️
HOA Red Flags Checklist
Warning signs to investigate before buying in an HOA community.
table
🏢
Condo vs House Comparison
Compare the financial and lifestyle differences between buying a condo and a house.
table
📜
Landlord-Tenant Laws by State
Key landlord-tenant law provisions by state — notice periods, security deposits, and entry rules.
table
🔒
Security Deposit Limits by State
Maximum security deposit limits and return deadlines for all 50 states.
table
📈
Rent Increase Limits by State 2025
States with rent control or rent stabilization laws and applicable limits.
table
⚖️
Eviction Process by State
Key eviction notice periods, court timelines, and tenant rights by state.
table
🏠
Tenant Rights Guide
Core tenant rights all renters should know — repairs, privacy, discrimination, and more.
table
🏡
Airbnb Profitability Estimator
Estimate short-term rental income, expenses, and net profit for a property.
estimator
📋
Short-Term Rental Regulations Guide
Overview of STR restrictions in major US cities.
table
🤝
Realtor Commission Calculator
Calculate estimated real estate agent commissions at various rates.
estimator
💰
Home Sale Capital Gains Exclusion Calculator
Calculate tax owed on home sale profit after the $250K/$500K primary residence exclusion.
estimator
🏷️
Home Sale Net Proceeds Calculator
Calculate how much you'll actually receive after selling your home.
estimator
📣
For Sale By Owner (FSBO) Guide
Pros, cons, costs, and process for selling your home without a realtor.
table
🪑
Home Staging Cost Estimator
Estimate professional home staging costs and potential ROI impact.
estimator
🏠
Landlord Checklist
Essential tasks and documents every landlord needs to manage a rental property.
table
📝
Rental Application Checklist
What landlords and tenants need for a rental application.
table
🔄
1031 Exchange Guide
How 1031 tax-deferred exchanges work for real estate investors.
table
📉
Rental Property Depreciation Calculator
Calculate annual depreciation deduction for residential and commercial rental properties.
estimator
📋
Real Estate Tax Deductions Guide
Deductions available to homeowners and rental property owners.
table
🛡️
Home Warranty Cost Guide
What home warranties cover, typical costs, and whether they're worth buying.
table

All 220 tools run entirely in your browser — no data is stored or sent to any server.