Basic Calculator
A simple 4-function calculator with memory, square root and percentage keys. Free online Basic Calculator for math — instant, accurate results, no signup.
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Understanding the Basic Calculator
A standard four-function calculator for quick everyday math — addition, subtraction, multiplication and division, with chain operations and a clear/equals workflow just like the one on your desk.
Mathematics shows up in every corner of daily life — budgeting, cooking, construction, engineering, even reading a bus schedule. A calculator like this lets you skip the scratch-paper step and move straight to the answer, without the arithmetic mistakes that creep in when the numbers get messy. The Basic Calculator sits in that toolkit — it A simple 4-function calculator with memory, square root and percentage keys. Enter your numbers above and the result updates instantly; every step of the math is shown in the Derivation panel so you can see exactly how the answer was reached.
How it’s calculated
Where
- +
- Addition
- −
- Subtraction
- ×
- Multiplication
- ÷
- Division
Step-by-step walkthrough
Compute 128 + 47 − 35 × 2.
- 01128 + 47 = 175
- 0235 × 2 = 70
- 03175 − 70 = 105
Frequently asked questions
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