Mathlean · Online math workspace
Integer square root calculator
Find the largest integer whose square does not exceed a nonnegative integer.
How to use this calculator
Replace 30; the result 5 satisfies 25 ≤ 30 < 36.
Tap the math below to edit it and see the result. Once a result is ready, press Tab on a hardware keyboard to accept it. Outside a matrix, Return completes the line; the phone math keyboard has the same Return action.
Try it here
Interactive tools require JavaScript. You can read the guide and example without it.
What to know
This is a floor operation, not a rounded or approximate square root.
Mathlean combines visual mathematical input with computation and canvas tools. Results depend on the expression and available engine support; check important answers independently.