Scientific Calculator
Guide: Mean, Median, Mode and Standard Deviation: A Plain Guide
You can type on your keyboard too, and press Enter for the answer. Brackets, powers (^), percentages, factorials and implicit multiplication like 2(3+4) all work.
Nothing you enter or choose here leaves your device. This tool runs in your browser.
How to use
- 1Type your calculation or tap the keys.
- 2Choose degrees or radians for trig functions.
- 3Press equals or Enter, and tap a past answer to reuse it.
Frequently asked questions
Which functions does it have?
sin, cos, tan and their inverses, hyperbolic functions, log (base 10), ln, powers, roots, absolute value, factorials, percent, combinations (nCr) and permutations (nPr), plus pi, e and your last answer.
How do I switch between degrees and radians?
Use the Degrees and Radians buttons at the top. In degrees, sin(30) is 0.5. In radians, sin(pi/2) is 1.
Does it follow the order of operations?
Yes. Brackets, then powers, then multiplication and division, then addition and subtraction. Powers go from right to left, so 2^3^2 is 2^9.
How does percent work?
On its own, 50% is 0.5. After a plus or minus it is a part of the first number, so 200 + 10% is 220, as on a pocket calculator.
Is it accurate?
It uses standard double precision numbers and shows up to 12 digits, with tiny rounding leftovers like 1.2e-16 removed. Very large answers switch to exponent form.
Is my data sent anywhere?
No. Everything is worked out in your browser and nothing is sent to us.
Read the guides
Learn how this works and how to get the most from it.
Money, health & time
Mean, Median, Mode and Standard Deviation: A Plain Guide
What each average tells you, when the median beats the mean, how standard deviation measures spread, and when to use sample or population.
1 min read
Money, health & time
GCD, LCM and Fractions: How They Connect
How to find the greatest common divisor and least common multiple, and how they help you simplify and add fractions step by step.
1 min read
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