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Square root and cube root calculator
Roots come up everywhere: geometry homework, the Pythagorean theorem, standard deviations, and back-solving growth rates. Enter any number and get the square root and cube root instantly, plus any nth root from 2 to 12 with the n of your choice. Negative numbers are handled correctly — odd roots of negatives are real, even roots are flagged rather than silently wrong — and a check line shows the arithmetic so you can trust the answer at a glance.
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Square Root & Cube Root Calculator
Get square roots, cube roots, and any nth root — with the math shown.
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Scientific calculatorA handheld option for checking roots and other math.Paid link · Check current price ↗As an Amazon Associate I earn from qualifying purchases.The math, plainly
How it works
- 01
The square root is the number that, multiplied by itself, gives your input.
- 02
The cube root handles negatives correctly — ∛−27 is −3 — because odd roots of negatives are real.
- 03
The nth root takes any n from 2 to 12; even roots of negative numbers have no real solution and the result says so.
Try a real scenario
144
InputsValue 144, n = 4
Result√144 = 12, ∛144 ≈ 5.24, and the 4th root is ≈ 3.46.
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