Popular calculators
- Age Calculator Calculate your exact age in years, months, and days from any birthdate.
- Discount Calculator Work out sale price and savings instantly with percentage discounts.
- Percentage Calculator Find percentages of numbers, increase/decrease values, and ratios.
- BMI Calculator Check if youโre underweight, normal, overweight, or obese using BMI.
- Loan Calculator Calculate loan repayments, interest, and payoff schedules quickly.
- Weight Converter Convert between kg, lbs, stones, and ounces instantly.
- Scientific Calculator Perform advanced calculations including trigonometry, logs, and powers.
- Savings goal (time to target) How long to reach your goal with monthly deposits and APR.
- Compound interest Future value with monthly contributions; start or end of month option.
- Mortgage repayment Monthly payment, total interest, payoff date and overpayments.
- Global salary take-home Quick net pay for multiple countries (simplified bands).
- Love Calculator (compatibility test) Enter two names and get an instant fun compatibility score.
- Currency converter Live rates via Frankfurter; paste your own JSON if needed.
- Date difference Count days between two dates, inclusive or exclusive.
- Stamp Duty (SDLT) England and NI bands with first-time buyer and surcharge rules.
- VAT (add/remove) Add VAT to net or remove from gross; includes custom rate.
- BMR & TDEE Calculator ๐ช๐ฅ Calculate your Basal Metabolic Rate and Total Daily Energy Expenditure to plan diet and workouts.
- Unit converter Convert length, weight, temperature, volume, area, speed, time and data.
- Date & Time Tools Date difference, add/subtract days, countdown, Unix time, world clock.
- Random Number Generator Integers or decimals, multiple results, optional no-duplicates and seed.
- Dice Roller Roll d4, d6, d8, d10, d12, d20, d100; totals and modifiers.
- Stopwatch Start/stop, laps and splits, keyboard shortcuts.
- Countdown timer Live countdown to a date/time with pause and shareable link.
- Student Tools PercentageโGPA, weighted grade calculator, equation solver, mini sci-calc.
- Password Generator Create strong passwords with length, symbols, and copy-to-clipboard.