Square Root Calculator
Find the square root of any positive number. Free online Square Root Calculator for algebra — instant, accurate results, mobile-friendly, no signup needed.
Derivation
- ├── 01Given
n = 144 - ├── 02Formula
√n is the non-negative number that squared gives n - ├── 03Check perfect square?
12 × 12 = 144 ✓ - ├── 04√n12
- └── 05n²
144 × 144 = 20,736
The Babylonians (1800 BCE) used an iterative method for √2 that converges quadratically — the same algorithm your CPU runs under the hood today.
Understanding the Square Root Calculator
The Square Root Calculator helps you compute find the square root of any positive number.. It runs entirely in your browser with no sign-up required.
Algebra is the art of solving for the unknown. Rearranging a formula to isolate the variable you actually need is the single most common real-world math skill — and doing it with real numbers under time pressure is where errors happen. The Square Root Calculator sits in that toolkit — it find the square root of any positive number. Enter your numbers above and the result updates instantly; every step of the math is shown in the Derivation panel so you can see exactly how the answer was reached.
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