Calculators
From working out your age to comparing loan repayments, these calculators handle everyday maths so you don't have to reach for a spreadsheet. Every result updates instantly as you type.
Age Calculator
Find your exact age in years, months, days, hours and minutes from your date of birth.
Percentage Calculator
Calculate percentages, percentage change, and what percent one number is of another.
Discount Calculator
Work out the final price and amount saved after applying a percentage discount.
BMI Calculator
Calculate your Body Mass Index from height and weight, with metric and imperial units.
BMR Calculator
Estimate your Basal Metabolic Rate — the calories your body burns at rest — using the Mifflin-St Jeor formula.
Loan Calculator
Estimate monthly payments and total interest on a loan from amount, rate and term.
Simple Interest Calculator
Calculate simple interest and total payable amount from principal, rate and time.
Compound Interest Calculator
See how your investment grows over time with compound interest, including yearly breakdown.
Tip Calculator
Work out the tip amount and per-person split for any bill in seconds.
Time Calculator
Add or subtract hours, minutes and seconds to calculate a resulting duration.
Date Difference Calculator
Find the exact number of days, weeks, months and years between two dates.
Average Calculator
Calculate the mean, median, mode and range of a list of numbers instantly.
Ratio Calculator
Simplify ratios or scale them up to find equivalent ratios and missing values.
Fraction Calculator
Add, subtract, multiply and divide fractions with automatic simplification.
GPA Calculator
Calculate your grade point average from course grades and credit hours.
Salary Calculator
Convert between hourly, daily, weekly, monthly and annual pay figures.
Frequently Asked Questions
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