Standard deviation calculator
Numbers, grades, and study plans stay in your browser; results show formulas or intermediate values for checking.
Search and use guide
Standard deviation calculator
Calculate population/sample variance and standard deviation. privacy-first-browser-tooling
Who it helps
- Calculate population/sample variance and standard deviation.
- Computes squared deviations from the mean, divides by N for population or N-1 for sample, then takes the square root.
- enter a set of scores to calculate mean, variance, and population or sample standard deviation.
What you can enter
- enter a set of scores to calculate mean, variance, and population or sample standard deviation.
- Computes squared deviations from the mean, divides by N for population or N-1 for sample, then takes the square root.
How to read results
Computes squared deviations from the mean, divides by N for population or N-1 for sample, then takes the square root. privacy-first-browser-tooling
Data and privacy
GoGo Tools records analytics by tool slug only and does not include your input values. privacy-safe-analytics-only
Feedback
How can we improve this tool?
Send a suggestion or bug report for this tool.
FAQ
Does it only show the answer?
No. It shows formulas or intermediate values so you can check the calculation.
Is data uploaded?
No. Grades, numbers, and study plans stay in your browser.
Is this an official grade system?
No. Official grades, GPA mappings, and school rules should come from your institution.
Can I use it with different school systems?
Yes as a general calculator; adjust inputs for your course weights and grading scale.