Every calculator you reach for, in one place

Everyday calculators, without the clutter

CalculatorWorks is a small collection of the calculators most people actually reach for — the ones for money decisions, health checks, and quick everyday maths. Each tool does one job well, loads instantly, and works offline once the page is open. There are no accounts to create, no numbers to upload, and no "premium" wall hiding the useful features. Everything runs in your browser, so whatever you type stays on your own device.

What each tool is for

Here's a quick guide to which calculator solves which problem:

• BMI Calculator — check your body mass index from height and weight, in metric or imperial, and see the healthy-weight range for your height.
• Percentage Calculator — work out X% of a number, what percent one figure is of another, and percentage increase or decrease.
• Loan Calculator — find the monthly payment and total interest on a mortgage, car loan, or personal loan, with a year-by-year balance table.
• Compound Interest Calculator — project how savings grow over time with regular contributions and compounding.
• Age Calculator — get an exact age in years, months, and days, plus a countdown to the next birthday.
• Tip Calculator — add a tip and split the bill between any number of people.
• Unit Converter — convert length, weight, temperature, and volume between metric and imperial.

Fast, private, and free

Speed and privacy are the whole point. Because the maths happens on your device rather than a server, results appear the instant you type and nothing you enter is sent anywhere, stored, or tracked. The basic calculator at the top of this page even handles brackets and full order of operations, and every keypad works with your physical keyboard too. Whether you're splitting a restaurant bill, sizing up a loan, or converting a recipe from cups to millilitres, the answer is one click away — no sign-up, no cost.