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Scientific Calculator
Use this free scientific calculator for trigonometry, logarithms, square roots, cube roots, powers, constants, DEG/RAD mode, expression history, and quick result copying.
Keyboard support DEG / RAD mode Expression history Copy results
DEG mode
How to use the scientific calculator
- Type an expression or use the scientific keypad.
- Choose DEG or RAD before using trigonometry.
- Use functions such as sin, cos, tan, log, ln, sqrt, cbrt, powers, pi, and e.
- Press equals or Enter, then copy the result or reuse an expression from history.
Common uses
Solve trigonometry problems with DEG or RAD angle mode.
Calculate logarithms, natural logs, square roots, cube roots, and powers.
Check science, math, engineering, and study expressions in one line.
Reuse recent expressions from the history panel while comparing answers.
Examples
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7
Frequently asked questions
Quick answers about angle mode, supported functions, typing expressions, and privacy.
What is the difference between DEG and RAD?
DEG uses degrees for trigonometry, so sin(30) means 30 degrees. RAD uses radians, which is common in advanced math and many science classes.
Which functions are supported?
The calculator supports sin, cos, tan, inverse trig functions, log, ln, sqrt, cbrt, abs, powers, parentheses, pi, e, and standard arithmetic.
Can I type expressions directly?
Yes. You can click the keypad or type expressions such as sin(45)+log(100). Press Enter or the equals button to calculate.
Does the history leave my browser?
No. Recent scientific calculations stay in the page session only and are not sent to a server.
What is this Scientific Calculator best for?
Use it when you need trig functions, logs, roots, powers, constants, parentheses, or DEG/RAD angle mode. For plain totals and quick percentages, the Basic Calculator is simpler.