Scientific Calculator
A free online scientific calculator with trig, logs, powers, memory and history.
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Type with your keyboard too: numbers, + − * / ^ ( ), Enter to calculate, Esc to clear. Use “ans” for the last answer.
History
Continue your work
- Graphing Calculator — Plot functions on a graph.
- Fraction Calculator — Work with exact fractions.
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Clear instructions
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Free to use
No sign-up required. Tool-specific limits may apply.
How to use the Scientific Calculator
A free online scientific calculator with trig, logs, powers, memory and history.
- 1 Choose DEG, RAD or GRAD for angles.
- 2 Click the keys or type on your keyboard; a live preview shows the result as you go.
- 3 Press = or Enter, then reuse results from the history or with “ans”.
Example and practical tips
sin(30) + 2² × 3 gives 12.5 in degree mode. The same expression in radians gives a different answer, so check the angle mode first.
Frequently asked questions
What order are operations done in?
Standard order: brackets, powers, then multiplication and division, then addition and subtraction. 2 + 3 × 4 is 14.
Does implicit multiplication work?
Yes. 2π, 3(4 + 1) and 2sin(30) are multiplied automatically.
Report an issue
Something broken or not quite right? Tell us and we will look into it.