Calculator

A fast, simple calculator for everyday math.

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How to use Calculator

  1. Enter a calculation using the available keys.
  2. Review the expression and result before using it elsewhere.

Example task: Check arithmetic with an explicit order of operations

Enter 3 × (4 + 2) using the available arithmetic controls. Parentheses make the intended grouping explicit, and the result is 18.

Check the result: Review the expression as well as the result. A correct evaluation of the wrong expression will not answer your original question.

Best for

Evaluating everyday arithmetic expressions

What it supports

Decimals, parentheses, signs, addition, subtraction, multiplication, division, and remainder

What you get

Numeric result with expression history

Common questions and troubleshooting

Why is the result different from adding the numbers left to right?

Multiplication and division normally take precedence over addition and subtraction. Use parentheses to specify your intended grouping: 3 × (4 + 2) is 18, while 3 × 4 + 2 is 14. Inspect the entered expression and use appropriate rounding when the result represents money or a measurement.

Processing and privacy

Runs in your browser

This tool processes your input on your device instead of uploading it to Toolza. Some tools may save a draft in your browser so you can continue later.

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