Calculators
Basic Calculator
Free online basic arithmetic calculator
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Toolenza
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Inverse on ·
About this tool
A free online basic calculator that runs entirely in your browser — no sign-up, no app to install, no data sent anywhere. Use it for quick arithmetic: addition, subtraction, multiplication, and division. The display shows your running operation so you can see what you typed before pressing equals, and the result flashes when computed.
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How to use
- 1 Click or tap a digit to enter the first number.
- 2 Tap an operator (+, −, ×, ÷) to choose what to do next.
- 3 Enter the second number.
- 4 Tap = to see the result.
- 5 Tap Clear to start over, or ⌫ to delete the last digit.
Examples
| 125 + 75 | 200 |
| 1,000 × 0.08 | 80 (e.g. 8% of $1,000) |
| 450 ÷ 6 | 75 |
| 1,500 − 999 | 501 |
Frequently asked questions
You can type digits directly into the page in most browsers. Use +, -, *, / for operators and Enter for equals.
Results are rounded to 10 decimal places to avoid floating-point display noise. For higher precision, use a scientific or programmatic calculator.
No — every calculation runs locally in your browser. Nothing is uploaded.
JavaScript uses IEEE-754 floating point, which cannot represent some decimal fractions exactly. We round results to 10 decimals to mask this in everyday use.
Yes — operations are evaluated left-to-right as you press operators. Press = to see each running total.
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Embed this tool on your site
Drop a one-line iframe snippet into any blog, lesson plan, or knowledge base. Powered-by-Toolenza link included.
Embed this tool
Paste this snippet into any HTML page. The tool runs entirely in your reader's browser.
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Basic Calculator
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