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Math & Numbers Runs in browser Popular Updated 30 Mar 2026

Scientific Calculator

A full-featured scientific calculator with trigonometry, logarithms, exponents, roots, memory functions, and calculation history. Full keyboard support.

 
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How to use Scientific Calculator

  1. Enter an expression

    Click calculator buttons or type on your keyboard. The expression is shown in the top display line as you build it.

  2. Use scientific functions

    Click sin, cos, tan, log, ln, or other function buttons. The function wraps your next input automatically.

  3. Set the angle mode

    Click DEG, RAD, or GRAD to switch between degrees, radians, and gradians for trigonometric calculations.

  4. Press equals to compute

    Press = or Enter to evaluate the expression. The result appears in the main display.

  5. Use memory functions

    M+ adds the current result to memory. M− subtracts. MR recalls the stored value. MC clears memory.

  6. Review calculation history

    Scroll the history panel to see and reuse your last 20 results.

Scientific Calculator FAQ

What scientific functions are supported?
Trigonometry (sin, cos, tan, arcsin, arccos, arctan), logarithms (log, ln, log₂), exponents, roots, factorial, abs, floor, ceiling, π, and e.

Does it support keyboard input?
Yes. Type numbers and operators directly. Enter evaluates the expression, Escape clears, and Backspace deletes the last character.

How do I switch between degrees and radians?
Click the DEG/RAD/GRAD toggle. The current mode is always displayed. Affects sin, cos, tan, and their inverses.

How do I calculate sin(30°)?
Ensure DEG mode is active, then click sin and type 30, then =. The result is 0.5.

What are the memory buttons?
M+ adds the displayed value to memory. M− subtracts it. MR recalls the stored memory value. MC clears memory to zero.

Can I use this for calculus problems?
The calculator evaluates numerical expressions. For symbolic calculus (derivatives, integrals as formulas), you would need a computer algebra system.

What is the difference between log and ln?
log is the common logarithm (base 10). ln is the natural logarithm (base e ≈ 2.71828). Use ln for calculus and e is the natural log.

How do I calculate powers and roots?
Use the x^y button for powers and the √ or ⁿ√ buttons for roots. Or type the expression: 2^8, sqrt(144).

Is the history saved between sessions?
History persists during the current session. It clears when you close or refresh the page.

Is any data sent to a server?
No. All calculations run entirely in your browser. Nothing is uploaded or stored.

Background

Perform scientific calculations directly in your browser with a full- featured calculator that rivals physical scientific calculators and smartphone apps. Trigonometric functions include sin, cos, tan, and their inverses (arcsin, arccos, arctan). Logarithm options cover common log (log₁₀), natural log (ln), and binary log (log₂). Exponents, nth roots, factorial, absolute value, floor, and ceiling are all accessible from the keypad. Toggle between degrees, radians, and gradians for angle calculations. Memory buttons store and recall intermediate values. Calculation history keeps your last twenty expressions and results. Full keyboard support means you can type naturally without clicking. Handles parentheses, operator precedence, and constants π and e. Ideal for students, engineers, and professionals who need a reliable scientific calculator without installing software.

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