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.

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 …

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

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

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-free …

Calculators and convertors for STEM, finance, fitness, construction, cooking, and more. Getting the right answer in math is important, but what really matters is knowing how you got there, and being able to …

Basic Online Calculator with 10-digit keypad and 4 functions to add, subtract, multiply and divide numbers. Includes basic handheld calculator functions for square, square root, percent, sign change, …

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

Calculator+ offers fast, accurate, and easy-to-use online calculators for math, finance, health, fitness, engineering, and everyday needs. No signup required.

Welcome to the online version of the Texas Instruments TI-84 Plus CE graphing calculator emulator. This web-based emulator provides all the functionality of a physical TI-84 Plus CE calculator right in …