What do you need to work out?

100 free calculators for UK tax, property, money, home, health and more – using current UK rules, with the working shown.

Search calculators

100 calculators

Tax and pay

Income tax, National Insurance, take-home pay, VAT and pensions using current HMRC rates.

Stamp duty, mortgage repayments, affordability, LTV and rental yield for UK buyers and landlords.

Compound interest, ISAs, loans, credit cards, pensions and everyday budgeting.

Energy bills, running costs, solar, heat pumps and DIY materials for UK homes.

Fuel costs, MPG, EV charging, company car tax and HMRC mileage for UK drivers.

BMI in stone and pounds, calories, body fat, pregnancy dates and training zones.

Percentages, ratios, averages, standard deviation, geometry and fractions.

Imperial and metric conversions the UK still uses every day.

Age, days between dates, UK working days, bank holidays and holiday entitlement.

Margins, markups, break-even, late payment interest and statutory pay for UK employers and staff.