Free Online n-th Root & Square Root Calculator | Eqsy.io

The Eqsy.io n-th Root Calculator instantly finds any root of a number — from square roots (√x) and cube roots (³√x) to higher n-th roots.
It supports both real and imaginary results, handles decimals and negative inputs, and includes a copy button for quick sharing.
Perfect for students, engineers, and anyone working with algebra, geometry, or complex numbers.

n-th Root Calculator

Find any n-th root of a number — including square, cube, and higher roots. Supports decimals and negatives.

Number (x) Root (n) Decimals

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🔹 How to Use the n-th Root Calculator

Enter the number (x) – Type any positive, negative, or decimal value.
Set the root (n) – Use 2 for square root, 3 for cube root, or any higher integer.
Choose decimals – Select how many decimal places you want (0–12).
Click “Calculate” – Instantly see:
- Positive n-th root
- Negative n-th root
- Imaginary roots (if applicable)
- A check value showing $result)^n = x$
Click “Copy” – Copy the result directly to your clipboard.
Use “Reset” to start over.

Works perfectly on desktop and mobile devices — fast, lightweight, and fully offline in your browser.

What is a square root?

A square root is a number that, when multiplied by itself, equals the original number. For example, √9 = 3 because 3×3 = 9.

Can I enter negative numbers?

Yes, the calculator will show an imaginary result (using i) for negative inputs.

Does it support decimals or large numbers?

Absolutely. You can calculate square roots of decimal or very large values accurately.

How accurate is this calculator?

It uses full JavaScript precision (up to 15 decimal places), giving results instantly and reliably.

Do I need to install or sign up?

No — it’s a free, browser-based tool that works without registration.

What is an n-th root?

The n-th root of a number x is a value that, when raised to the power of n, equals x.
For example, the cube root of 8 (³√8) is 2, because 2³ = 8.

Can I calculate cube roots or higher roots?

Yes — just set n to 3 for cube roots, 4 for fourth roots, or any value above.

What is the “Check” line?

It verifies your result by squaring, cubing, or raising it back to the n-th power — so you can see the exact value.

What does the “Copy” button do?

It copies the most recent result to your clipboard for easy use in notes, spreadsheets, or reports.

🔹 About the n-th Root Calculator

The Eqsy.io n-th Root Calculator is a free online math tool that makes root calculations fast, precise, and intuitive.
From basic square roots to complex imaginary results, it handles all types of input instantly.

Key Features:

⚡ Instantly calculate any n-th root (square, cube, 4th, 5th, etc.)
🧮 Handles decimals, negatives, and imaginary numbers
🎯 Adjustable precision (0–12 decimals)
📋 “Copy Result” button for easy reuse
💻 Works offline in your browser on any device

Whether you’re studying algebra, checking your math homework, or working with scientific data, Eqsy.io helps you find roots the smart way — quick, clean, and accurate.