Step by step
- Find your number in the chart.
- Not there? Type it into the calculator above.
- Learn the squares up to 15² to estimate any root quickly.
At a glance
| Number | Square root | Check |
|---|---|---|
| 64 | 8 | 8 × 8 = 64 |
| 144 | 12 | 12 × 12 = 144 |
| 169 | 13 | 13 × 13 = 169 |
Related questions
What is √50?
About 7.071, between √49 = 7 and √64 = 8.
What is √3?
About 1.732; it is irrational.
How many perfect squares are there below 1,000?
31, from 1² = 1 to 31² = 961.
More questions: square root calculator
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Open the full square root calculator →
Updated November 14, 2026.