Square Calculator
Find the square (and cube) of any number, exactly.
Enter your values to see the result.
Continue your work
- Square Root Calculator — Find the square root of a number.
- Multiplication Calculator — Multiply any two numbers exactly.
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Clear instructions
Find steps, examples and limitations below.
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How to use the Square Calculator
Squaring a number means multiplying it by itself. The square calculator does this exactly for any number, including decimals, negative numbers and very large values, and also shows the cube (the number multiplied by itself three times) and the result in scientific notation.
- 1 Enter a number.
- 2 Read its square, cube and scientific notation.
- 3 Use the square root calculator to go the other way.
Example and practical tips
12.5² = 12.5 × 12.5 = 156.25, and 12.5³ = 1,953.125.
Frequently asked questions
What is the square of a negative number?
It is always positive, because a negative times a negative is positive: (−4)² = 16.
Where are squares used?
In areas (a 5 m square room has 25 m² of floor), the Pythagorean theorem, statistics and physics formulas.
What is a perfect square?
A whole number that is the square of another whole number, such as 1, 4, 9, 16 and 25.