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Scientific Calculator

A free scientific calculator with trigonometry, logarithms, powers, roots and more — no app needed.

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Keyboard works too — try s for sin(, q for √, p for π, Enter for =.

What can this scientific calculator do?

Everything a classroom scientific calculator does, in your browser:

  • Trigonometry: sin, cos, tan — in degrees or radians
  • Logarithms: log (base 10) and ln (natural log)
  • Powers & roots: x², xʸ, square roots
  • Constants: π (pi) and e (Euler's number)
  • More: factorials (n!), reciprocals (1/x), percentages, brackets

Degrees vs radians

The DEG button at the top-left toggles angle mode. In DEG mode, sin(30) = 0.5. Tap it to switch to RAD mode, where angles are measured in radians — sin(π/2) = 1. Always check the mode before trig homework or engineering math.

Examples to try

  • 2 xʸ 10 = → 1024
  • √ 144 ) = → 12
  • 5 ! = → 120
  • log 1000 ) = → 3

Just need basic arithmetic? Use our simpler online calculator.

Frequently asked questions

How do I switch between degrees and radians?

Tap the DEG button above the keypad — it toggles to RAD. The trigonometric functions (sin, cos, tan) follow the selected mode.

How do I calculate x to the power of y?

Enter the base, tap the xʸ button, enter the exponent, then press =. For squares, the x² button is quicker.

Is this scientific calculator free?

Yes — free for students, engineers and anyone who needs quick scientific math, with no account and no download.