STEP BY STEP
How to use the Standard Deviation Calculator
- Enter a list of numeric values.
- Choose Population or Sample.
- Calculate the result.
- Review mean, variance, and standard deviation together.
Math & Number Systems
Standard Deviation Calculator
Calculate sample or population standard deviation, variance, and mean.
GlobalExact or deterministic
=Your result will appear here
Enter values and select Calculate.
APPLICABILITY
Where this result fits
- Region
- Global
- Result type
- Exact or deterministic
- Standards basis
- NIST Digital Library of Mathematical Functions
- Edition / version
- Named mathematical reference; publisher page reviewed July 25, 2026
Important: Use the displayed precision and the stated domain limits for your purpose. Methodology
ACCURACY & LIMITS
What to know before using the result
- A sample calculation requires at least two values.
- Results use full precision internally before display rounding.
HELP
Frequently asked questions
How accurate is the Standard Deviation Calculator?
The calculator uses the formula shown on this page and keeps full numeric precision internally before formatting the result. A sample calculation requires at least two values.
Does the Standard Deviation Calculator upload my input?
No. The calculation or processing runs locally in your browser. UtiliNest does not receive or store the values you enter.
Can I use the Standard Deviation Calculator on a phone?
Yes. The inputs, result controls, and explanatory content are designed for current mobile and desktop browsers.
Where does the Standard Deviation Calculator apply?
Applicability: Global. Result classification: Exact or deterministic. Use the displayed precision and the stated domain limits for your purpose.
SOURCES
Definitions and references
Reviewed against the references below on July 25, 2026. Links open the source publisher's website. Read the source policy