Calculators
Percentage, loan, interest, BMI and other everyday calculators.
Percentage Calculator
Calculate percentages, increases and decreases instantly.
Age Calculator
Calculate exact age in years, months and days.
Date Difference Calculator
Calculate the number of days, weeks or months between two dates.
Loan Calculator
Calculate monthly loan payments and total interest.
Compound Interest Calculator
Calculate compound interest growth over time.
Simple Interest Calculator
Calculate simple interest on a principal amount.
BMI Calculator
Calculate Body Mass Index from height and weight.
Tip Calculator
Calculate tip amount and split the bill instantly.
Average Calculator
Calculate the mean, median and mode of a set of numbers.
Ratio Calculator
Simplify ratios and solve for a missing value.
Which calculator do you need?
| If you want to… | Use |
|---|---|
| Work out a discount, increase or share | Percentage Calculator |
| Know a loan's monthly payment | Loan Calculator |
| See how savings grow | Compound Interest Calculator |
| Find an exact age or the days between dates | Age Calculator or Date Difference Calculator |
| Split a bill fairly | Tip Calculator |
| Scale a recipe or a mix | Ratio Calculator |
Good to know
- Most results update as you type, so you can try different numbers and see the difference straight away.
- Interest depends on the method. Simple interest is charged on the original amount only, compound interest also on the interest already added, and most loans charge interest on the balance still owed each month.
- Estimates, not advice. The calculators show the maths; a lender's actual offer can differ because of fees, rounding and its own rules.
- Nothing is stored. The numbers you enter stay in your browser.