Tip, loan, BMI, age, percentage, unit and currency calculators — instant, free, browser-based
Calculate the perfect tip and split the bill per person. 7 currencies, custom percentages.
Use ToolMonthly payment, total interest and full amortisation schedule for any loan or mortgage.
Use ToolCalculate percentages, percentage change and add or remove a percentage from any number.
Use ToolCalculate exact age in years, months, days, hours and minutes. Future date support.
Use ToolCalculate Body Mass Index in metric or imperial. Includes ideal weight range and health tips.
Use ToolConvert between all units — length, weight, temperature, speed, volume and data size.
Use ToolConvert between 150+ currencies with live exchange rates. Updated daily from public API.
Use ToolA growing collection of free, accurate calculators covering finance, health, maths and everyday life. Every calculator runs entirely in your browser — no sign-up, no data sent to a server.
| Calculator | Primary Use | Key Feature |
|---|---|---|
| Loan | Mortgage planning | Full amortisation CSV export |
| Currency | Travel, transfers | Live rates, 150+ currencies |
| BMI | Health check | Metric + Imperial, ideal weight |
| Tip | Restaurant bills | 7 currencies, per-person split |
| Age | Birthday, documents | Works with future dates |