Scientific Calculator
Solve powers, roots, logs, and trig with parentheses and degree or radian modes.
Evaluate expressions with powers, roots, logs, and trig. Runs entirely in your browser with no eval.
Supported: + - * / ^ % ( ) sin cos tan asin acos atan sqrt log ln abs round floor ceil pi e. Trig uses degrees or radians based on the toggle.
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How to use this tool
- Type an expression or tap the keypad buttons.
- Choose degrees or radians for trig functions.
- Press Calculate or = to see the result.
Frequently asked questions
What is a scientific calculator?
A scientific calculator goes beyond basic addition and subtraction to handle powers, roots, logarithms, and trigonometric functions such as sine, cosine, and tangent. It supports parentheses so you can build multi-step expressions in the order you want, rather than calculating each step separately and writing down intermediate results. Students use it for algebra, trigonometry, and calculus homework that basic calculators cannot handle. Engineers and technicians use it for quick on-the-spot calculations involving angles, exponents, or logarithmic scales without opening dedicated software. Because it runs in the browser with a full keypad and expression input, you can type a formula directly or tap buttons, which suits both quick single calculations and longer expressions typed in one go.
Who is this calculator for?
Students use this calculator for maths, physics, and chemistry homework that involves powers, roots, or trigonometric functions beyond what a basic calculator supports. Teachers use it to check worked examples or demonstrate a calculation during a lesson without switching to a separate app. Engineers, technicians, and tradespeople use it for quick calculations involving angles, exponents, or logarithms on the job. Anyone studying for a maths exam, working through a textbook, or double-checking a formula result can use it without installing an app, buying a physical calculator, or creating an account. It works the same on a desktop browser or a phone, so it travels with you between study sessions.
Which functions are supported?
You can use sin, cos, tan, asin, acos, atan, sqrt, log (base 10), ln, abs, round, floor, ceil, plus constants pi and e. Operators include + - * / ^ and %.
Should I use degrees or radians?
Most school trig problems use degrees. Switch to radians for university maths or formulas that expect radian input. The toggle applies to sin, cos, tan and the inverse functions.
Is this as accurate as a desktop calculator?
Results use standard JavaScript floating-point maths. That is fine for everyday work, but tiny rounding differences can appear in long decimal chains.
Is my expression uploaded?
No. Evaluation runs locally with a safe parser. We do not send expressions to a server.
Can I paste long formulas?
Yes. Paste into the expression field and press Calculate. Use parentheses to control order of operations.
Processed locally in your browser. Your files are never uploaded to our servers.