Free UK calculators that just work

Take-home pay, stamp duty, mortgages, bills and more — updated for the 2026/27 tax year. No sign-ups, no clutter, and your numbers never leave your device.

Tax & pay

UK salary calculator 2026/27Take-home pay after tax, NI, pension and student loan.Hourly to salary converterConvert between hourly, weekly, monthly and yearly pay.Pro rata salary calculatorYour actual pay for part-time hours or days.Holiday entitlement calculatorStatutory holiday in days or hours, including part-time.VAT calculatorAdd or remove VAT at 20%, 5% or any rate.

Property & mortgages

Stamp duty calculatorSDLT for home movers, first-time buyers and second homes.Mortgage repayment calculatorMonthly payments, total interest and balance over time.

Money & savings

Savings & compound interest calculatorHow your savings grow with compound interest.

Household & motoring

Appliance running cost calculatorWhat any appliance costs to run per hour, day or year.Journey fuel cost calculatorWhat a car journey costs in fuel, and each person's share.

Everyday maths & dates

Percentage calculator% of a number, % change, and more.Working days calculatorBusiness days between two dates, minus UK bank holidays.