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Recent calculations (tap one to use it again)
Your calculations will appear here.
How to use it
- Keyboard: type numbers and + − * /, press Enter for the answer, Backspace to delete and Esc to clear.
- % divides by 100, so 200 × 15% gives 30.
- DEG / RAD sets whether sin, cos and tan use degrees or radians. Degrees is the usual choice at school.
- 2nd switches some keys to their opposite: sin⁻¹, cos⁻¹, tan⁻¹, eˣ, 10ˣ and roots.
- Ans uses your last answer, and M+ / M− / MR / MC keep a number in memory.
Questions people ask
Is anything I type saved?
Only your last few calculations, on your own device, so you can reuse them. Nothing is sent to us.
Why does sin 30 give 0.5?
Because the calculator is set to degrees (DEG). In radians (RAD), sin 30 gives −0.988.