Square diagonal
Geometry / FREE CALCULATOR
Calculate the corner-to-corner distance of a square.
Your answer starts here.
Enter your values and select Calculate to see the result and any available breakdown.
How to use this calculator
- Enter side length. Use the unit shown beside the field.
- Select Calculate and review the result. Select Reset to restore the example inputs.
How the calculation works
Side length*sqrt(2)
Worked example
Side length = 10. Result: 14.1421 length units.
Understand your result
Calculate the corner-to-corner distance of a square. The result is expressed in length units.
Assumptions and limitations
Assumes exact square geometry. Results are rounded for display.
Questions about this tool
What does this tool calculate?
Calculate the corner-to-corner distance of a square.
What should I check before using the answer?
Assumes exact square geometry.
Related guides
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