Free online calculator

Scientific Calculator

Use a fast standard and scientific calculator for arithmetic, powers, roots and trigonometry. Works privately in your browser.

✓ Instant results✓ No sign-up✓ Runs in your browser
How it works

Formula and method

Expressions follow standard order of operations: parentheses, exponents, multiplication and division, then addition and subtraction.

Worked example

For 12 × (5 + 3), evaluate the parentheses first: 12 × 8 = 96.

Assumptions

  • Angles use degrees when DEG is selected and radians when RAD is selected.
  • Division by zero is undefined.

Reference sources

Reviewed and updated 2026-07-14

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