Basic Calculator
Simple four-function calculator — add, subtract, multiply & divide.
Basic Calculator
How to use Basic Calculator
Follow these steps — everything happens instantly in your browser.
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Step 1. Click number buttons to enter values.
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Step 2. Click an operator (+, −, ×, ÷) between numbers.
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Step 3. Click = to see the result.
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Step 4. Click C to clear and start over.
Why use this tool
Private by design
All processing happens locally in your browser. Open DevTools → Network and you'll see zero file uploads. Ever.
Instant
No upload wait, no queue, no server round-trip. Results appear the moment you drop a file.
Free & unlimited
No accounts, no watermarks, no daily caps. Use it as many times as you like, forever.
Works everywhere
Desktop, tablet or phone — every tool is responsive and installable as a PWA for offline use.
Frequently asked questions
Everything you might want to know about basic calculator.
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