Scientific Calculator
A full scientific calculator — trig, logs, powers, and roots.
A full scientific calculator in your browser — sine, cosine and tangent (in degrees or radians), natural and base-10 logs, powers and roots, factorials, and the constants π and e. Type with your keyboard or tap the buttons; everything is calculated locally, nothing is sent anywhere.
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Tap to switch angle unit · keyboard supported
Runs entirely in your browser — nothing is uploaded.
How to use the scientific calculator
- 1Build your expression with the buttons or your keyboard.
- 2Switch between DEG and RAD for trigonometry as needed.
- 3Press = (or Enter) to evaluate; use C to clear and ⌫ to delete.
Frequently asked questions
Does it do trigonometry in degrees or radians?
Both — use the DEG/RAD toggle. It defaults to degrees, which most people expect, and switches to radians in one tap.
Can I use my keyboard?
Yes. Type digits and operators directly, press Enter to evaluate, Backspace to delete, and Esc to clear.
Is my input sent to a server?
No — the calculator runs entirely in your browser, so nothing you type leaves your device.
Read the guide
Order of Operations (PEMDAS) Explained