Scientific Calculator Online

Need a scientific calculator for homework but do not have one nearby? Our free scientific calculator online runs entirely in your browser. No download, no sign-up, and no cost. Solve trig problems, work with logarithms, calculate powers and roots, and store values in memory from your laptop, tablet, or phone.

What can it do?

This tool covers the functions you use in algebra, geometry, trigonometry, and pre-calculus. Switch between degree and radian mode for sine, cosine, and tangent. Use scientific notation for large numbers, parentheses for multi-step expressions, and the Ans button to reuse your last result. It also supports pi, e, factorials, inverse trig, and basic arithmetic with 12-digit precision.

How to use

Click the on-screen buttons or type on your keyboard, just like a physical calculator. Press Deg or Rad before working with trig functions. Use M+, M-, and MR to save and recall numbers in memory. Press x^y for powers, or EXP to enter values like 1.5 EXP 3 for 1500. Keyboard shortcuts include Enter for equals, Backspace to delete, and Escape to clear all.

Why use an online scientific calculator?

It is a practical backup when you forget your device at home or need a quick answer while studying. The calculator loads instantly in any modern browser and gives you reliable results without installing an app. For graphing functions, try our graphing calculator. For the full TI-84 Plus CE experience, use the TI-84 calculator. Both are free.