UK Calculators

Work out your UK take-home pay for 2026/27.

Calculate your monthly mortgage repayment from loan amount, interest rate and term.

Calculate stamp duty (SDLT) on a property purchase in England or Northern Ireland, including first-time buyer relief and the 5% additional-property surcharge..

Add VAT to a net price or work backwards from a gross price to find the VAT element.

Work out exactly how much employee National Insurance you pay in 2026/27 from your annual salary, with the band-by-band breakdown..

See how savings or investments grow with compound interest, including regular monthly contributions.

Three percentage calculators in one: find X% of a number, work out what percentage one number is of another, and calculate percentage increase or decrease..

Calculate your BMI from height and weight in metric or imperial units, and see where you sit against NHS healthy weight categories..

Work out an exact age in years, months and days from a date of birth, plus total days lived and days until the next birthday..

Work out statutory UK holiday entitlement (5.6 weeks) for full-time, part-time and mid-year starters, in days — including pro-rata calculations..

Work out your grade point average.

Find the best time to sleep and wake.