How a Calculator Works: From Key Press to Answer
Press a key and the answer appears before your finger leaves the button. Between those two moments sit a keypad matrix,…
Scientific Calculator
A full scientific calculator with trigonometry, logarithms, powers, roots, memory and a running history — keyboard friendly and instant.
Result
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How to use the Scientific Calculator
- Type with your keyboard or click the keys.
- Use the DEG/RAD switch before any trigonometry.
- Press Ans to reuse the previous result and M+ to store a value in memory.
Scientific Calculator — frequently asked questions
Does it work offline?
Once the page has loaded it runs entirely in your browser, so it keeps working without a connection and none of your numbers are ever sent to a server.
Which keyboard shortcuts work?
Digits, + − * /, parentheses, Enter for equals, Escape to clear and Backspace to delete the last character.
Is this scientific calculator free to use?
Yes. Every calculator on the site is free, needs no sign-up, and runs entirely in your browser, so your figures never leave your device.
How accurate is the result?
The maths is exact for the formula shown on the page. Accuracy in the real world depends on your inputs and on assumptions the formula cannot see, so treat the output as a well-grounded estimate rather than a quote.
Can I use it on my phone?
Yes. The page is responsive, weighs a few kilobytes and works offline once loaded, so it behaves the same on a phone as on a desktop.
Related reading
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About this calculator
Written and reviewed by The Samsung Calculator editorial team. Every calculator is written against a published formula, reviewed against at least one independent reference implementation, and dated when it changes.
Last reviewed August 15, 2026 · Calculation runs client-side · No data collected · Report an error