Money & Finance · Free tool
Calculator
Free 4-function calculator with full keyboard support. Add, subtract, multiply, divide. No ads in the way, runs offline.
0
Keyboard: digits, + - * /, Enter = evaluate, Esc or C = clear, Backspace.
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What it does
A simple 4-function calculator with full keyboard support — type digits, +-*/, Enter to evaluate, Esc to clear. Mirrors the input flow of a phone calculator, including operator chaining (2 + 3 + 4 = 9, no parentheses needed).
For trig, logs, and exponents, see our scientific calculator (coming soon). For any specific calculation — loan payments, tip splits, percentage changes — we usually have a dedicated tool that’s faster and shows its work.
Embed this tool on your siteShow snippetHide
Paste this snippet into any page. Loads on-demand (lazy), no tracking scripts, and sized to most dashboards. Replace the height to fit your layout.
<iframe src="https://freetoolarena.com/embed/calculator" width="100%" height="720" frameborder="0" loading="lazy" title="Calculator" style="border:1px solid #e2e8f0;border-radius:12px;max-width:720px;"></iframe>How to use it
- Type or click digits to enter a number.
- Pick an operator (+, −, ×, ÷) — it shows above the display.
- Type the second number, then press Enter or =.
- Use C to clear, ⌫ to drop the last digit, ± to flip sign.
Frequently asked questions
- Does it support keyboard input?
- Yes. Digits, decimal point, +, -, *, /, Enter or =, Esc or C, and Backspace all work. Operator * and x both produce ×.
- What about scientific functions?
- Not yet. This calculator focuses on simple math; the scientific version with sin/cos/log/exp is on the roadmap.
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