Scientific Calculator
Free scientific calculator with trigonometry, logarithms, powers, roots and constants. Runs entirely in your browser โ no sign-up, no tracking.
Worked example
2^10 evaluates to 1024. In degree mode, sin(30) evaluates to 0.5, since 30ยฐ is a
standard reference angle; the same expression in radian mode would treat 30 as 30 radians and give a
completely different result.
Frequently asked questions
Should I use degrees or radians for trig functions?
Use degrees for everyday angle measurements (a right angle is 90ยฐ) and radians for most mathematics and physics contexts, where a full circle is 2ฯ radians rather than 360ยฐ. Mixing them up is a common source of wrong answers โ sin(30) evaluates completely differently depending on which mode is active, so check the mode toggle before trusting a trig result.
What order of operations does this calculator follow?
Standard mathematical precedence: parentheses first, then exponents (^), then multiplication and division (left to right), then addition and subtraction (left to right) โ the same PEMDAS/BODMAS rules taught in school.
How do I calculate a power or a root?
Use ^ for powers, e.g. 2^10 for 2 to the power of 10. For an nth root, raise to the fractional power 1/n โ for example, a cube root is ^(1/3).