Math & Numbers

Calculate percentages, percentage change, tip amounts and more across 4 calculator modes.

Generate cryptographically secure random numbers. Single, bulk, or roll virtual dice up to D100.

Calculate your exact age in years, months and days. See total weeks, hours, minutes, heartbeats and days until your next birthday.

Add or remove UK VAT from any price. Supports 20%, 5% and 0% rates plus a custom rate. Includes a batch calculator for invoices.

Calculate monthly repayments, total interest and full repayment schedule for any personal loan or car finance. Supports repayment and interest-only loans.

Calculate UK mortgage repayments, total interest, stamp duty and full yearly schedule. Supports repayment and interest-only mortgages with LTV guidance.

Calculate your Body Mass Index in metric or imperial. Shows your BMI category, healthy weight range and how far you are from the ideal range.

Roll up to 6 dice at once with a realistic 3D animation. Click individual dice, press Space or shake your phone to roll. Includes roll history.

Online bingo caller with real audio callouts and all 90 traditional British bingo calls. Auto-caller with adjustable speed, animated balls and a full number board.

Add your own options and spin the wheel to get a random result. Perfect for decisions, games, raffles, classroom activities and more. Saves your options automatically.

Calculate the tip on any bill and split it between any number of people. Choose from preset tip percentages or enter a custom rate. Includes a quick tip guide for all rates.