Basic Calculator

What the Basic Calculator does

The Basic Calculator handles everyday arithmetic — addition, subtraction, multiplication, and division — with a clean on-screen keypad, evaluating full expressions in the correct order of operations.

How to use it

1. Click the number and operator buttons to build your calculation.
2. Press = to see the result.
3. Use C to clear or ⌫ to delete the last entry.

Common uses

• Quick everyday arithmetic when you don't want to open a separate calculator app.
• Working through a multi-step calculation without losing track of intermediate results.
• Double-checking mental math for shopping, budgeting, or splitting costs.
• A distraction-free calculator for basic classroom or homework arithmetic.
• Performing a quick calculation while working in a browser without switching apps.

Good to know

The calculator evaluates the full expression you build following standard order of operations (multiplication and division before addition and subtraction), so an expression like 12+8×2 correctly returns 28, not 40 — worth knowing if you're used to a simple calculator that processes each operation immediately as you press it.

Order of operations — the rule that multiplication and division happen before addition and subtraction in an expression without parentheses — is a mathematical convention, not a law of nature, and it exists specifically so that a written expression has one unambiguous correct answer regardless of who's evaluating it, which is exactly the behavior this calculator follows when you build up a multi-step expression.