FreeUSUKCalculator.com is a free online calculator hub for people in the United States and the United Kingdom. It offers hundreds of practical calculators across finance, mortgage, loans, tax, salary, retirement, health, fitness, math, and unit conversions, plus browser-based utility tools for images, PDFs, text, and developers. Every tool on FreeUSUKCalculator.com is free to use with no sign-up, delivering instant results tailored to US and UK contexts.
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Quick access to the most-used calculators.
Mortgage Calculator
Monthly payment + total cost.
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Loan Calculator
Repayments with interest.
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Auto Loan Calculator
Car loan payments fast.
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Compound Interest Calculator
Compounding growth.
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Retirement Calculator
Plan retirement savings.
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Salary Calculator
Hourly ↔ yearly pay.
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Income Tax Calculator
Estimate tax quickly.
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Take-Home-Paycheck Calculator
Net pay after taxes.
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Inflation Calculator
Buying power by year.
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Sales Tax Calculator
Tax + total price.
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Credit Card Payoff Calculator
Pay off debt faster.
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House Affordability Calculator
How much house you can afford.
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Bond Calculator
Bond price & yield.
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Investment Calculator
Project growth over time.
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Savings Calculator
Future savings value.
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Interest Calculator
Quick interest totals.
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Interest Rate Calculator
Solve for the rate.
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Amortization Calculator
Principal vs interest.
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Finance Calculator
Everyday finance math.
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Payment Calculator
Payment schedule helper.
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401k Calculator
Retirement 401k projections.
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ROI Calculator
Return on investment.
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Lease Calculator
Monthly lease payments.
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Margin Calculator
Profit margin calculator.
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Discount Calculator
Sale price calculator.
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Currency Converter
Exchange rates live.
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BMI Calculator
Metric + imperial BMI.
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Calorie Calculator
Daily calorie estimate.
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BMR Calculator
Basal metabolic rate.
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Ideal Weight Calculator
Healthy range estimate.
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Body Fat Calculator
Body fat estimate.
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TDEE Calculator
Total daily energy.
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Macro Calculator
Protein, carbs, fats.
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Due Date Calculator
Expected due date.
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Ovulation Calculator
Fertile window estimate.
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Calories Burned Calculator
Exercise calorie burn.
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Target Heart Rate Calculator
Exercise heart rate zone.
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Army Body Fat Calculator
Military body fat %.
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Pregnancy Calculator
Timeline milestones.
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Pregnancy Conception Calculator
Conception estimate.
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Pace Calculator
Pace & finish time.
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Sleep Calculator
Optimal sleep cycles.
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Protein Calculator
Daily protein needs.
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Scientific Calculator
Advanced math functions.
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Percentage Calculator
Percent change fast.
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Fraction Calculator
Operate on fractions.
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Standard Deviation Calculator
Std dev + variance.
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Quadratic Formula Calculator
Solve quadratic equations.
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Triangle Calculator
Solve triangle values.
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Volume Calculator
3D shape volumes.
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Area Calculator
2D shape areas.
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Probability Calculator
Odds & probability.
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Mean, Median, Mode, Range Calculator
Statistical averages.
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Pythagorean Theorem Calculator
Right triangle solver.
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Z-score Calculator
Standard score calculation.
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Graphing Calculator
Plot equations visually.
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Random Number Generator
Random range numbers.
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Matrix Calculator
Matrix operations.
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Exponent Calculator
Powers and exponents.
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Log Calculator
Logarithm calculator.
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Square Root Calculator
Square roots fast.
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Age Calculator
Exact age from DOB.
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Tip Calculator
Calculate tips fast.
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Password Generator
Strong passwords.
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GPA Calculator
GPA from credits.
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Grade Calculator
Final grade estimate.
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Fuel Cost Calculator
Trip fuel costs.
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Time Zone Calculator
Time zone converter.
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Conversion Calculator
Unit conversions.
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Unit Converter
Unit conversions.
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Concrete Calculator
Concrete volume.
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Wind Chill Calculator
Feels-like temperature.
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Dice Roller
Roll virtual dice.
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Love Calculator
Fun compatibility score.
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Date Calculator
Date differences.
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Time Calculator
Add/subtract time.
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Hours Calculator
Sum hours worked.
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Binary Calculator
Binary conversions.
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Hex Calculator
Hexadecimal math.
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Roman Numeral Converter
Roman ↔ numbers.
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All Calculators 80 live
Everything in one place — tap to start instantly.
All Calculators
Tip: Use the top search bar to find any calculator by name.
Calculators localised for the US & UK
Key money tools come in dedicated United States and United Kingdom versions — correct currency, tax rules and terms for each country.