Precision-engineered tools for mortgage, salary, tax, stamp duty and personal health. Updated with HMRC 2026/27 rates. All free, no sign-up needed.
Unit conversions, trigonometry, and calculus engines.
BMI, BMR, and precision calorie trackers.
Reaction balancing, molar mass, and kinematic formulas.
Ohm's law, energy conversion, voltage, current, power and resistance tools.
Expert tools built by specialists. Each hub brings together the best calculators for its topic.
Property & stamp duty calculators. SDLT for buyers, landlords and first-timers.
16 tools →Every UK tax calculator and rate table. Income tax, NI, VAT, CGT and more.
14 tools →Specialist income tax tools. PAYE, self-employed, dividends and Scottish rates.
13 tools →Salary & employment tools. Take-home pay, overtime, redundancy and more.
17 tools →Wage & employment rights. Minimum wage checker, holiday pay and contracts.
13 tools →