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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