Life has numbers.
We make them simple.
From your next payday to your next big plan.
Free calculators that get you to the answer.
A percentage, in a moment.
Everyday favourites
Take-home pay
See how much of your salary reaches your pocket after Income Tax and National Insurance.
Mortgage
Estimate monthly repayments and total interest on a repayment mortgage.
Compound interest
See how an initial amount grows with interest on interest.
Percentage
Find any percentage of a number in a couple of seconds.
UK numbers.
All worked out.
Make sense of your salary, tax and next home with calculators built around UK rules.
Explore UK calculators 2026/27 tax year · Sources includedA calculator for what comes next.
UK calculators
Make sense of tax, salary and buying a home. Clear estimates using 2026/27 rates.
7 calculators →Money & finance
Plan repayments, explore savings and see what interest adds up to.
6 calculators →Everyday maths
Quick answers for percentages, shopping, shared bills and journeys.
6 calculators →Date & time
Count days, calculate an age and work out elapsed time.
3 calculators →Business
Understand your margins, set prices and find your break-even point.
3 calculators →The answer, without the hassle.
No accounts or downloads. Just enter your numbers and get a result.
See how it adds up.
Formulas, examples and assumptions sit alongside every calculator.
Your numbers stay yours.
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