Percent Error Calculator
Calculate absolute percent error relative to a reference.
Open toolStandard Error Calculator
Estimate the standard error of a mean as s / √n. Requires a nonnegative supplied sample standard deviation and independent observations.
Free to useNo sign-upRuns in your browser
Enter your details
Enter the inputs, then select Calculate.
Your result
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Result will appear here
How Standard Error Calculator works
Estimate the standard error of a mean as s / √n.
Requires a nonnegative supplied sample standard deviation and independent observations. This does not compute a confidence interval. Finite real inputs; output uses up to 12 significant digits. Floating-point results may be rounded.
How to use Standard Error Calculator
Follow the labelled inputs.
Enter sample standard deviation
Replace the example with sample standard deviation. The field labels specify the expected format and units.
Input and settings
Check the remaining inputs
Set independent sample size. Requires a nonnegative supplied sample standard deviation and independent observations.
Tool result
Run, review and save
Select Calculate. Review the calculated result, then copy it or download the result text.
Review the details
Examples and uses for Standard Error Calculator
Check the supplied example
The starting example produces 2. Estimate the standard error of a mean as s / √n.
Use your own inputs
Read the labels for sample standard deviation and independent sample size. Requires a nonnegative supplied sample standard deviation and independent observations.
Record a reviewed result
Copy the calculated result into your notes. Keep the formula and assumptions with it if someone else needs to reproduce the calculation.
How to read the result
Read the units and assumptions with the output.
Estimate the standard error of a mean as s / √n.
Requires a nonnegative supplied sample standard deviation and independent observations. This does not compute a confidence interval. Finite real inputs; output uses up to 12 significant digits. Floating-point results may be rounded.
Supported input and limits
Check the stated scope before you run it.
Requires a nonnegative supplied sample standard deviation and independent observations. This does not compute a confidence interval. Finite real inputs; output uses up to 12 significant digits. Floating-point results may be rounded.
The input stays in this browser. Copy result and Download save the same displayed text.
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Open toolStandard Error Calculator: common questions
Answers about using Standard Error Calculator and understanding its results.
What assumptions and input limits apply?
Requires a nonnegative supplied sample standard deviation and independent observations. This does not compute a confidence interval. Finite real inputs; output uses up to 12 significant digits. Floating-point results may be rounded.
How can I save the output?
Use Copy result to copy the displayed text, or Download to save it as a text file. The tool runs in your browser and does not require an account.
Calculate with your input
Check the calculated result, then copy or download it.