Scientific Calculator

Free online scientific calculator with trig functions, logarithms, exponents and constants. No signup, instant results, mobile-friendly.

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What is a scientific calculator?

A scientific calculator goes beyond basic arithmetic. It lets you compute trigonometric functions (sin, cos, tan), logarithms, powers, roots, and use scientific constants like π and e. It is essential for students, engineers, scientists, and anyone working with advanced math.

How to use this calculator

  1. Type your expression into the input bar or tap the keypad buttons.
  2. Use function buttons like sin, cos, log, sqrt, or constants π and e.
  3. Results update automatically. Press Enter or = to save a result to history.
  4. Tap AC to clear, or ⌫ to delete the last character.

Supported functions

sin(x), cos(x), tan(x)
Trigonometric functions (radians)
log(x)
Base-10 logarithm
ln(x)
Natural logarithm
sqrt(x)
Square root
x^y
Exponentiation
π, e
Mathematical constants

Example calculations

  • sin(π/2) = 1
  • log(100) = 2
  • sqrt(16) + 2^3 = 12
  • ln(e) = 1

Frequently asked questions

›Is this scientific calculator free?

Yes. It is 100% free, requires no signup, and works entirely in your browser.

›Does it work on mobile?

Yes. The keypad is touch-friendly and responsive on phones and tablets.

›Are angles in degrees or radians?

Trigonometric functions use radians. To use degrees, convert with degrees × π / 180.

›Can I copy my result?

Yes. Tap the Copy button to copy the current expression and result to your clipboard.

›Is my data private?

Absolutely. All calculations happen locally in your browser — nothing is sent to a server.

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