Math & Science

Scientific Calculator

A free, full-featured scientific calculator in your browser.

Use this scientific calculator for everyday arithmetic plus trigonometric, logarithmic, exponential, and other advanced functions — no download or sign-up required.

How to Use This Tool

  1. Click the number and operator buttons to build your expression, or use your keyboard.
  2. Use the function buttons (sin, cos, tan, log, ln, √) for scientific operations.
  3. Press = or Enter to evaluate the expression.

Full Scientific Function Support

This calculator supports standard arithmetic (+, −, ×, ÷) plus scientific functions:

Keyboard Support

You can type numbers and basic operators directly from your keyboard, press Enter to calculate, Backspace to delete the last character, and Escape to clear.

A Note on Trigonometric Functions

This calculator computes trigonometric functions in radians, the standard unit in most mathematical and scientific computation. If you need degrees, convert first by multiplying your angle by π/180.

Frequently Asked Questions

Does this calculator use degrees or radians for trig functions?

It uses radians, the standard convention in most scientific and mathematical calculations. To work in degrees, multiply your angle by π/180 (0.017453) before using the trig function.

Can I use my keyboard instead of clicking buttons?

Yes — number keys, basic operators (+, −, *, /), parentheses, Enter (to calculate), Backspace (to delete), and Escape (to clear) all work directly from your keyboard.

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This calculator is provided for general informational and estimation purposes only. Results should not be treated as professional financial, tax, legal, medical, or engineering advice. Always verify critical calculations with a qualified professional or official source before making decisions.