Math & Scientific
Root Calculator
Root: it computes the n-th root as x^(1/n). Worked through below with real figures, and the calculator repeats the working on your own inputs — free, on-device, instant.
Use Root Calculator to work through a calculation: give it your number and root, press Calculate, and read off the result — all worked out on your device.
About this calculator
It computes the n-th root as x^(1/n). It matters when you need the exact relationship checked quickly rather than worked through by hand. Worked below as The cube root of 27 = 27 1/3 = 3 (because 3 × 3 × 3 = 27). — and the calculator on this page repeats exactly that working for your inputs, instantly, and offline after load.
How to use
- Enter the number and the root degree (2 for a square root).
- Press Calculate to run the root calculator.
- Read the result: the nth root of the number.
- Press Reset to clear the root calculator and start again.
Why use Root Calculator
Fast
Calculations run in your browser. No round trip to a server.
Private
Your inputs never leave your device. Nothing is uploaded.
Free
No signup, no paywall, no ads-in-results, no watermarks.
Accurate
Based on standard, well-established formulas.
Mobile-ready
Optimised for phones, tablets, and desktops alike.
Transparent
Honest disclaimers wherever browser limits or regional rules apply.
Common uses
Use it for homework and assignment checks
Root in statistics and data coursework
Use it for verifying answers from a textbook
Root in tutoring and teaching sessions
Use it for science-fair and project numbers
Use it when comparing two different methods
Technical notes
Root Calculator computes the n-th root as x^(1/n).
Inputs are taken exactly as entered, so check for typos before trusting an answer.
Nothing you type is uploaded — the calculation happens entirely on your device.
FAQ
What roots can it find?
Any nth root — square roots, cube roots, and higher — of the number you enter.
What do I enter in the Root Calculator?
The number (the radicand) and the root degree; for a square root the degree is 2.
What is the square root of 81?
9, because 9 × 9 = 81.
Does the Root Calculator send my data to a server?
No — the Root Calculator runs entirely in your browser, so the numbers you enter never leave your device.
Worked example
The cube root of 27 = 271/3 = 3 (because 3 × 3 × 3 = 27).