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.

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 to a power or …

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, powers …

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

web2.0calc.com online calculator provides basic and advanced mathematical functions useful for school or college. You can operate the calculator directly from your keyboard, as well as using the buttons …

Jan 17, 2025 · Use our free calculator online for quick and accurate math calculations on the go. Compatible with all devices, it supports addition, subtraction, multiplication, division, and more with a …

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

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