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Scientific Calculator

"A full computational workspace, right in the browser."

A full computational workspace handling complex trigonometry, logarithms, exponents, roots and factorials. Type or tap a complete expression with parentheses — it's evaluated properly, not button-by-button.

Full Expression Parser

Deg / Rad Modes

Memory Functions

Calculation History

No Sign-up

🧮 Scientific Calculator

History

Your calculations will appear here.

How It Works

Build an expressionTap numbers, operators, and functions — parentheses work exactly as expected.

Set your angle modeDEG or RAD affects every trig function and its inverse.

Press equalsThe full expression evaluates at once, respecting order of operations.

Reuse from historyTap any past calculation to load it back into the display.

Key Functions

Button	Does
2nd	sin/cos/tan ↔ inverse
x^y	Exponent (e.g. 2^10)
√ / x²	Square root / square
x!	Factorial
M+ / MR	Memory add / recall
Ans	Insert last result

💡 TIPS

Your keyboard works too — digits, + − × ÷, parentheses, Enter for =, Backspace, and Escape for AC.
Forgetting to check DEG vs RAD is the most common source of "wrong" trig answers — check the toggle first.
x! only works on non-negative whole numbers — round first if you have a decimal.
Use Ans to chain calculations without retyping the previous result.

Frequently Asked Questions

Does this calculator support parentheses and order of operations?

Yes. The calculator uses a full expression parser that correctly handles parentheses, order of operations, and nested functions, rather than evaluating button presses one at a time.

How do I switch between degrees and radians?

Use the DEG/RAD toggle at the top of the calculator. It affects both trigonometric functions (sin, cos, tan) and their inverses (sin⁻¹, cos⁻¹, tan⁻¹).

What does the 2nd button do?

2nd switches sin, cos and tan to their inverse functions — sin⁻¹, cos⁻¹ and tan⁻¹ — for calculating angles from a ratio.

Can I use the calculator's memory functions?

Yes. M+ adds the current result to memory, M- subtracts it, MR recalls the stored value into the expression, and MC clears memory. A small dot appears on MR when memory holds a non-zero value.

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A Real Expression Engine, Not Just Buttons

Why "Full Expression" Matters

Many on-screen calculators evaluate each button press immediately, which breaks down the moment an expression needs parentheses or a specific order of operations. This calculator instead builds a complete expression string and evaluates it as a whole — 2 + 3 × 4 correctly returns 14, not 20.

Trigonometry, Handled Carefully

Every trig function respects whichever angle mode — degrees or radians — is currently selected, for both the forward functions (sin, cos, tan) and their inverses (sin⁻¹, cos⁻¹, tan⁻¹). Mixing up degrees and radians is one of the most common calculator mistakes; the DEG/RAD toggle stays visible at all times to help avoid it.

Exponents, Roots and Factorials

Square, cube, arbitrary exponents (x^y), square roots, cube roots, and factorials are all supported, and correctly nest inside parentheses and larger expressions — so an expression like (3 + 2)² × √16 evaluates exactly as written.

Who Uses This

Students working through trigonometry, algebra, or pre-calculus homework.
Teachers double-checking answer keys before handing out an assignment.
Anyone needing a quick scientific calculation without installing an app.
Test-takers practicing calculator-based problem sets.

Memory and History

Use M+ and M- to build up a running total across several calculations, and MR to recall it back into any expression. Every calculation you run is also logged in the history list below the keypad — tap any past entry to load it back into the display.

Nothing Is Saved or Uploaded

All calculations happen entirely in your browser. Refreshing the page clears the display, memory, and history completely — nothing is sent to a server or stored anywhere.