Online calculator for quick calculations, along with a large collection of calculators on math, finance, fitness, and more, each with in-depth information.

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.

Free online calculators for everything. Some solve problems, some satisfy curiosity and some simply for fun.

Perfect for students, professionals, and everyday users, this online calculator provides accurate results for basic arithmetic, scientific functions, and more. Enjoy the convenience of free, ad …

Omni Calculator provides solutions for a wide range of problems, from finance and business to health. It’s so fast and easy you won’t want to do the math again!

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 …

Free basic online calculator with percentage calculator, square root, customizable themes, sound effects, and full keyboard support. Perfect for students, professionals, and everyday math …

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.