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Finance Calculators
Mortgages, loans, investments, taxes, and retirement planning.
Mortgage Calculator
Monthly payments, total interest & full amortization schedule.
Loan Calculator
Monthly repayments and total cost for any loan.
Compound Interest
See how investments grow with compounding over time.
Tax Calculator
Estimate your income tax and take-home pay quickly.
Retirement Calculator
Plan your retirement savings and see when you can retire.
ROI Calculator
Calculate return on investment for any business or project.
Auto Loan Calculator
Monthly car payments and total interest for auto loans.
Salary Calculator
Convert hourly, weekly, monthly & annual salary figures.
Health Calculators
BMI, calories, body fat, pregnancy, sleep, and more.
BMI Calculator
Find your Body Mass Index and healthy weight range.
Calorie Calculator
Daily calorie needs based on age, weight & activity.
Body Fat Calculator
Estimate your body fat % using body measurements.
Pregnancy Calculator
Due date, gestational age & trimester milestones.
Sleep Calculator
Best bedtime and wake-up time for full sleep cycles.
Water Intake Calculator
Daily water intake needs based on weight & activity.
Ideal Weight Calculator
Ideal body weight range based on height and frame.
Heart Rate Calculator
Maximum & target heart rate zones for exercise.
Math Calculators
Percentages, fractions, scientific, algebra, and number tools.
Percentage Calculator
Percentages, increases, decreases & differences instantly.
Fraction Calculator
Add, subtract, multiply & divide fractions with full steps.
Scientific Calculator
Full scientific calculator with trig, logs & more.
Square Root Calculator
Square roots and nth roots of any number.
Average Calculator
Mean, median & mode for any set of numbers.
Random Number Generator
Random numbers within any range you choose.
Factor Calculator
All factors and prime factorization of any number.
Ratio Calculator
Simplify ratios and solve proportion problems easily.
Date & Time Calculators
Age, date differences, time zones, and countdown timers.
Age Calculator
Exact age in years, months & days from any date.
Date Calculator
Count days between dates or add/subtract from any date.
Time Calculator
Add or subtract time durations in h, min & sec.
Time Zone Converter
Convert times across all world time zones instantly.
Days Until Calculator
How many days until any future date or event.
Unit Converters
Length, weight, temperature, currency, speed & volume.
Length Converter
Meters, feet, inches, miles, km & more.
Weight Converter
Kilograms, pounds, ounces, grams & more.
Temperature Converter
Celsius, Fahrenheit & Kelvin conversions.
Currency Converter
Live exchange rates between 150+ world currencies.
Speed Converter
mph, km/h, knots, m/s & other speed units.
Volume Converter
Liters, gallons, cups, fluid ounces & more.
Science Calculators
Physics, chemistry & engineering formula solvers.
Everyday Calculators
Tips, discounts, fuel, GPA, grades & more practical tools.
Tip Calculator
Tips and bill splits for any number of people.
Discount Calculator
Sale prices & savings for any discount percentage.
Fuel Cost Calculator
Trip fuel costs based on distance & efficiency.
GPA Calculator
GPA from course grades and credit hours.
Concrete Calculator
Concrete volume for slabs, walls & footings.
Grade Calculator
Final grade or score needed to pass an exam.