Online calculators for everything. Some solve problems, some satisfy curiosity.

The original calculator was invented in the 17th century by a Frenchman called Blaise Pascal! He was just 18 years old, and wanted to help his father do his tax calculations.

A beautiful, free online scientific calculator with advanced features for evaluating percentages, fractions, exponential functions, logarithms, trigonometry, statistics, and more.

This free online calculator can be used for basic computations such as addition, subtraction, multiplication, division, and square roots.

Oct 29, 2025 · Use this basic calculator online for math with addition, subtraction, division and multiplication. The calculator includes functions for square root, percentage, pi, exponents, …

Use the best online calculator for any math calculations on PC and smartphones. The free calculator allows you to quickly and accurately perform arithmetic, calculate percentages, raise …

Free Online Scientific Notation Calculator. Solve advanced problems in Physics, Mathematics and Engineering. Math Expression Renderer, Plots, Unit Converter, Equation Solver, Complex …

Your all-in-one online calculator for quick and precise basic to scientific calculations. Easily perform addition, subtraction, multiplication, division, trigonometry, logarithms, and more with …

Yes, all the online calculators on The Calculator Site are free for you to use at your convenience. Our website is funded by the advertising we feature on our pages.

Learn how to use your basic calculator with easy-to-follow instructions. Discover how to input numbers and symbols, perform simple math, and calculate percentages.