Everyday money maths, sorted in seconds.
Free calculators for the UK and the US — take-home pay, mortgages, loans, savings and everyday maths. No signup, no fees, no nonsense. Pick a category below or try a popular tool.
Browse by category
UK MoneyTake-home pay, VAT and student loans — the numbers behind every UK payslip.Browse calculators →
US MoneyPaychecks and wages decoded: federal tax, FICA and hourly-to-salary maths.Browse calculators →
Property & MortgagesFrom monthly payments to stamp duty — every number in your home purchase.Browse calculators →
Cars & LoansCar finance, PCP deals, personal loans and debt-payoff plans.Browse calculators →
Saving & InvestingCompound growth, retirement pots and savings goals, made visual.Browse calculators →
Health & EverydayBMI, calories, age and percentages — quick answers for daily life.Browse calculators →Popular right now
Checked against official sources
Tax bands and rates are verified against HMRC, IRS and gov.uk guidance, and updated every tax year.
Your numbers stay yours
Every calculation runs in your browser. We never see, store or sell the figures you type in.
Built for UK & US
Separate tools for British and American tax systems, currencies and rules — no confusing mix.
Frequently asked questions
Are these calculators really free?
Yes — every calculator on this site is 100% free, with no signup and no paywall.
Do you store the numbers I type in?
No. All calculations happen in your browser; nothing you enter is sent to or stored on our servers.
Are the tools for the UK or the US?
Both. UK tools use HMRC 2026/27 rates and pounds; US tools use 2026 IRS federal figures and dollars. Each page says which it covers.
How accurate are the results?
Results use standard, widely accepted formulas and current published rates — accurate for personal planning. For binding financial, tax or medical decisions, always confirm with a qualified professional.