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

2026年9月28日 · Free Casio-style scientific calculator online, inspired by the fx-991ES PLUS: exact fractions, SHIFT SOLVE, …

The first solid-state electronic calculator was created in the early 1960s. Pocket-sized devices became available in the 1970s, …

This is an online scientific calculator with double-digit precision that supports both button click and keyboard type.

Basic Online Calculator with 10-digit keypad and 4 functions to add, subtract, multiply and divide numbers. Includes basic handheld …

2026年7月17日 · Solve everyday math instantly with our free online Basic Calculator. Easily perform addition, subtraction, …

Free online calculator — basic, scientific & percentage calculator plus 50+ free tools. No sign-up, no download, works instantly.

Casio MS-80B Desktop Calculator, Tax & Currency Tools General purpose calculator with large display; ideal for home, office & …