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Calculator Tools
Basic Math Calculators

Basic Calculator

A simple, fast online calculator for addition, subtraction, multiplication, division and percentages — with full keyboard support.

= 33

About the Basic Calculator

Use this free basic calculator for everyday arithmetic. Type with your keyboard or tap the keys; the result respects the normal order of operations (brackets, then multiplication and division, then addition and subtraction).

Also known as: simple calculator, online calculator, free calculator, arithmetic calculator, standard calculator.

How to use this calculator

  1. Type your calculation with the keypad or your keyboard.
  2. The result updates instantly as you type — press Calculate (or Enter) at any time.
  3. Review the breakdown shown under the main result.
  4. Use Copy result or Share to save the answer or send a link with your inputs.

Formula

Order of operations: ( ) → × ÷ → + −

Frequently asked questions

Does this calculator follow the order of operations?

Yes. Multiplication and division are done before addition and subtraction, and anything inside brackets is calculated first. 12 + 7 × 3 = 33, not 57.

How do I calculate a percentage?

Type the number followed by %, e.g. 200 × 15% gives 30. The % key divides the preceding number by 100.

Can I use my keyboard?

Yes. Digits, + − * /, parentheses, Enter (equals), Backspace and Escape (clear) all work.