Square Root Table: Square root by Number
Reference table of square root for Square Root across a range of number values — exact, engine-computed figures you can read off at a glance.
Square Root Calculator
Verified formula Updated Jun 2026 Private — runs on your device
Verified formula
Private
Square root
12.000000
- Square (n²)
- 20,736.00
- Cube root
- 5.241483
For general information only — not financial, tax, legal or medical advice. Verify before you rely on it.
How to use the Square Root Calculator
The Square Root Calculator works out your square root, along with 2 related figures in an instant. Enter number and the result updates as you type — it is free, needs no sign-up, and runs entirely in your browser so your figures stay private.
- Enter the number.
- Read off your square root, together with square (n²) and cube root — the calculator updates automatically, with no button to press.
Formula
The Square Root Calculator uses the formula:
Square root = √(Number)
Worked example
For example, with number of 144, the square root is 12.000000.
| Number | 144 |
|---|
| Square root | 12.000000 |
|---|---|
| Square (n²) | 20,736.00 |
| Cube root | 5.241483 |
Results are estimates for educational use, not professional advice.
Key terms explained
- Square root
- A value that, multiplied by itself, gives the original number.
Frequently asked questions
The square root of a number is the value that, multiplied by itself, gives that number. The square root of 144 is 12 because 12 × 12 = 144.
Not within the real numbers. The square root of a negative number is imaginary, so this calculator accepts only zero or positive numbers.
A perfect square is a number whose square root is a whole number, such as 9, 16, 25 and 144. Most numbers have a square root with decimals.
The cube root is the value that, multiplied by itself three times, gives the number. It is shown here as the number raised to the power one third.
The Square Root Calculator uses the formula: Square root = √(Number). For example, with number of 144, the square root is 12.000000.
Enter the number. Read off your square root, together with square (n²) and cube root — the calculator updates automatically, with no button to press.
Related guides
How to Calculate Square Root: Formula, Steps & Examples
Learn how to calculate Square Root — the formula explained step by step, with worked examples and a free calculator to check your answer.