Error Bar Generator

Paste raw experimental replicates or upload a CSV to instantly compute the Mean, Standard Deviation (SD), Standard Error (SEM), and 95% Confidence Interval bounds for your plots.

1. Input Replicate Data

Which error bar to use?
  • SD: Shows the variability/scatter of your raw data.
  • SEM: Shows the precision of your mean estimate.
  • 95% CI: Shows the range where the true population mean lies with 95% certainty. Best for visual significance testing.

2. Computed Statistics

Label N Mean SD (±) SEM (±) 95% CI (±)
Paste data or upload a CSV to view metrics.
Mathematical Theory