TopToolsAiA simple, no-frills calculator for everyday addition, subtraction, multiplication and division — right there in your browser when you don't want to dig out your phone. 47 x 3 gives 141, and (250 + 75) divided by 5 gives 65 — handled the way a physical calculator would, without needing to open a separate app.
Last updated: 1 Sep 2026
How to use Basic Calculator
- Tap the number and operator buttons to build your calculation, just like a normal calculator.
- Tap "=" to see the result.
- Tap "Clear" any time to start over.
Frequently asked questions
Does it handle decimals?
Yes, it works fine with decimal numbers for both input and results.
Can I use it for percentages?
For dedicated percentage work the Percentage Calculator is a better fit — this one focuses on the four basic operations.
Does it follow order of operations (BODMAS/PEMDAS)?
It performs one operation between two numbers at a time rather than parsing a full expression — for multi-step math, calculate step by step in the order you need.
Can I use negative numbers?
Yes, both fields accept negative numbers for calculations like subtraction below zero.
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