About Calcade
A free online calculator platform for the maths you actually run into day to day.
What is Calcade?
Calcade (calcade.app) is a free online calculator platform: a fast expression calculator plus 17 focused, single-purpose tools for the everyday, finance, health, study and conversion maths people look up most — percentages, GST, EMI, BMI, age, discounts, unit conversions and more. Every calculator lives at its own page, does one job well, and shows its result as you type.
No signup, ever
Every calculator on Calcade is free to use with no account, no signup and no paywall. Calculations run entirely in your browser — nothing you type is sent to a server or stored anywhere except your own device's local history, which you can clear at any time.
Fast and simple by design
Calcade is built to be quick: open a calculator, get an answer, move on. There's no clutter between you and the result, and each tool page includes a short explanation of the formula behind it, so the "how" is there if you want it and out of the way if you don't.
The calculators
The full set is organised by category on the calculators hub. Some of the ones people reach for most:
- Percentage Calculator — Percentages of a value, ratios, and increase or decrease.
- GST Calculator — Add GST to a price, or pull it back out of an inclusive one.
- EMI Calculator — Monthly instalment, total interest and what the loan really costs.
- Age Calculator — Your exact age in years, months and days — plus your next birthday.
- BMI Calculator — Body mass index from your height and weight, with its category.
- Unit Converter — Length, mass, temperature, area, volume, speed, time and data.
Every category has its own shelf on the /tools page — everyday, finance, health, math, conversion, study — so you can browse instead of searching if you're not sure which tool you need.