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Free UK Finance & Maths Calculators

Accurate, no-nonsense tools. No ads, no sign-up.

★ Favourites
★ Investment Returns Simulator ★ Retirement Drawdown Simulator ★ FIRE Calculator ★ Invest or Overpay Mortgage? ★ UK Salary Calculator ★ Compound Interest Calculator
⛽ Live UK Fuel Prices Every UK forecourt · GOV.UK Fuel Finder API · Updated every 30 min ›
💰 Investments
7 tools
Investment Returns Simulator› Retirement Drawdown Simulator› FIRE Calculator› Personal Investment Return (XIRR)› Pension Deferral Calculator› Forex Compounding Calculator› Stock Average Calculator›
🏠 Mortgage
4 tools
Mortgage Repayment Calculator› Mortgage Overpayment Calculator› Invest or Overpay My Mortgage?› Price Per Square Foot Calculator›
💵 Savings
6 tools
Compound Interest Calculator› Savings Goal Calculator› ISA Calculator› How Long Will My Money Last?› Budget Planner› Money Counter›
❄ Debt
2 tools
Debt Snowball Calculator› Debt Avalanche Calculator›
£ Income & Tax
7 tools
UK Salary Calculator› Time and a Half Calculator› Hourly to Salary Calculator› Maternity & Sick Pay Calculator› Required Salary Calculator› Two Jobs Tax Calculator› Stamp Duty Calculator›
∑ Maths
3 tools
Percentage Calculator› Average Calculator (Mean, Median & Mode)› Million to Billion Converter›
⇄ Unit Converters
16 tools
Length Converter› Weight Converter› Temperature Converter› Volume Converter› Speed Converter› Area Converter› Mass Converter› Acceleration Converter› Density Converter› Energy Converter› Force Converter› Pace & Speed Converter› Power Converter› Pressure Converter› Stress Converter› Torque Converter›
S&P 500 Total Return (1957–2026) · FTSE 100 & All-World returns · US CPI inflation · Updated quarterly · No ads · No sign-up