Calculators
Everyday calculators for percentages, discounts, loans, dates and unit conversions — enter your numbers and get an instant, accurate result.
Which tool should I use?
- Working out a discount or a tip?
- Use the Discount Calculator or the Tip Calculator.
- Converting between units?
- Use the Unit Converter for length, weight and temperature.
Popular
Percentage Calculator
Calculate percentages both ways, instantly
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PopularBMI Calculator
Calculate your Body Mass Index instantly
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Age Calculator
Calculate exact age in years, months and days
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Loan Calculator
Calculate your monthly loan payment and total interest
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Unit Converter
Convert length, weight and temperature instantly
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Discount Calculator
Work out the final price after a percentage discount
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Days Between Dates Calculator
Calculate the number of days, weeks and months between two dates
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Tip Calculator
Work out the tip and split the bill instantly
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Percentage Change Calculator
Calculate the percentage increase or decrease between two numbers
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Time Zone Converter
Convert a time between time zones instantly
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Cooking Measurement Converter
Convert recipe measurements between cups, tablespoons, ml and more
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Calorie Calculator
Estimate your daily calorie needs using the Mifflin-St Jeor equation
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Due Date Calculator
Estimate a pregnancy due date and gestational age from the last period
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BAC Calculator
Estimate blood alcohol content using the Widmark formula
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Scientific Calculator
A full scientific calculator with trig, log and power functions
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Running Pace Calculator
Calculate running pace, speed and estimated step count
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PopularCompound Interest Calculator
See how your savings grow over time with a live chart
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VAT Calculator
Add or extract VAT from any amount at any rate
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IBAN Validator
Check an IBAN's format, length and checksum instantly
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NewBusiness Days Calculator
Count working days between dates or add working days
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NewHourly Wage ↔ Salary Calculator
Convert between hourly wage and annual salary
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NewRule of Three Calculator
Solve proportions instantly: if A corresponds to B, what does C correspond to?
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NewSleep Calculator
Find the best bedtime or wake-up time based on 90-minute sleep cycles
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NewFuel Cost Calculator
Work out what a trip costs in fuel — total, liters and per person
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