=Calculate
Everyday math, done properly

The answer,
before you finish typing.

A calm set of everyday calculators — percentages, tips, loans, dates and more. No sign-up, no clutter, no waiting. They run the moment you type.

splits evenly
$60.00 · 18% · ÷ 2
$35.40
$
Tip total
$10.80
Total bill
$70.80
Each pays
$35.40
The full set

Every calculator, one tap away

Grouped by what you're actually trying to work out. Each one opens instantly and remembers nothing — your numbers stay on your device.

Finance Money & markets Health Date & time Math Everyday
$
%
Open the full Tip & split calculator →
$
%
Open the full Loan calculator →
$
%
Open the full Compound interest calculator →
$
%
Open the full VAT / tax calculator →
Example conversion
$100  →  €92.40
The full tool converts 21 major currencies with indicative reference rates and updates as you type.
Open the full Currency converter →
kg
cm
Open the full BMI calculator →
Example — 30 yrs, 175 cm, 75 kg, moderately active
2,633 kcal / day
The full tool uses the Mifflin–St Jeor equation with your sex, age and activity level.
Open the full Calorie calculator →
/
/
Open the full Fraction calculator →
Full keypad
loglnsincostanπe()
Everything you'd expect from a scientific calculator, with a running tape of your working.
Open the full Scientific calculator →
Why it feels different

Instruments, not forms

— 01

Answers as you type

No "calculate" button to hunt for. Every field is live, so the result moves the instant a number does.

— 02

Nothing to sign up for

No account, no email wall, no cookie banner theatre. Open a tool, get your answer, close the tab.

— 03

Your numbers stay yours

Everything runs on your device. We never see the bill you split or the loan you're weighing up.

The full collection

Every calculator on the site

Common questions about Calculate

Are the calculators on Calculate really free?

Yes — every calculator is completely free with no ads, no accounts and no locked features. The site is supported by optional donations only.

How accurate are the results?

Every tool is verified against known benchmarks before publishing — loan math against standard amortization tables, inflation against official BLS CPI data, health formulas against their original published equations. Where a result is an estimate, the page says so plainly.

Is my data private?

Completely. Calculations run entirely in your browser using JavaScript — the numbers you type never leave your device, and the site uses no cookies or tracking.

Do the calculators work on mobile?

Yes — every page is built for phones first and works instantly in any modern browser, with no app or sign-up required.