Scientific Calculator
Evaluate mathematical expressions with sin, cos, tan, log, and sqrt functions. A versatile scientific calculator in your browser. No signup or account required.
How to Use the Scientific Calculator
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Frequently Asked Questions
Which functions?
Trig, logs, powers, roots, and constants — the full scientific set.
Degrees or radians?
Both modes, switchable — wrong mode is the classic error source.
Parentheses?
Full nesting supported with proper precedence throughout.
Is my calculation uploaded anywhere?
No — calculation runs locally in your browser, free with no signup.
What is sin(30 degrees)?
Exactly 0.5 — the classic check that degree mode is on. In radian mode the same input reads sin(0.524) ≈ 0.5; mismatched modes explain most wrong answers.
Related Calculator Tools
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Evaluate arithmetic algebra expressions with + − × ÷, parentheses and decimals — digits-only evaluator, no variables. Check homework before class — free, local, no signup.
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Compute trigonometry: sin, cos, tan in degrees or radians with triangle solving. Find the opposite side from 30° hypotenuse 10 (= 5) — free, local, no signup.
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Compute logarithms (logs) in any base with change-of-base steps and natural/common presets. Solve log₂(32) = 5 instantly — free, local, no signup.
Last updated October 2026