Online Calculator — Fast, Free & Keyboard-Friendly

Everyday math in one tap: + − × ÷, %, √, ± and memory keys. Type on your keyboard or tap the buttons — it just works, even offline once loaded.

Quick answer: Free online calculator for everyday math: add, subtract, multiply, divide, percent, square root, sign and memory. Keyboard-friendly, instant, mobile friendly — runs in your browser with no signup.

RECENT (this session only)

Keyboard works: 0-9, + - * /, Enter =, Backspace, Esc = clear. Everything is computed on your device.

How to use

Tap or type — buttons or your keyboard (0-9, + − * /, ., Enter = equals).
Use %, √ and ± for percent, square root and sign toggle; M+/M−/MR store a value.
Check the tape — the last calculations are listed below; press Esc to start fresh.

About this tool

A clean online calculator that opens instantly and does the basics right: arithmetic with correct order (chain evaluation as you type), percent, square root, sign toggle, backspace and a running tape of your last calculations. It supports full keyboard input (digits, operators, Enter for =, Backspace, Esc to clear) so on desktop you never touch the mouse. Privacy & offline: everything is computed on your device — no data leaves the browser, and the page keeps working without internet. Honest scope: this is a basic/percent calculator — for finance use our dedicated EMI, paycheck, age, BMI and percentage tools which handle formulas, taxes and dates properly.

FAQ

Is this online calculator free?

Yes — 100% free, no signup, no paywall, no ad interstitials. It runs entirely in your browser.

Can I use the keyboard?

Yes: digits, + - * /, . for decimal, Enter for equals, Backspace to delete, Escape to clear everything.

Does it remember my calculations?

The current session keeps a short tape of recent calculations on screen. Nothing is stored or sent anywhere — refresh clears it.

How does the percent key work?

100 + 10% gives 110 (percent of the running total). 50 × 10% gives 5 (percent of the previous number) — the same behavior as standard desk calculators.

Does it work offline / on phone?

Yes. Once the page loads, calculation happens locally — you can go offline and keep calculating. The layout is tap-sized for phones.

What about scientific functions?

This tool is intentionally basic and fast. For specific needs use our EMI, paycheck, BMI, percentage, age and GPA calculators — each is purpose-built.

Related tools

🎂

Online Calculator — Fast, Free & Keyboard-Friendly

How to use

About this tool

FAQ

Related tools

Age Calculator

Percentage Calculator

EMI / Loan Calculator

BMI Calculator

CGPA / Percentage Converter

Land Area Converter

Date Difference Calculator

Cooking Unit Converter

Unit Price Comparator

Pet Cost Calculator

Grade Calculator

Final Exam Grade Calculator

Business Days Calculator

Number to Words Converter