Average Calculator

Calculate mean, median, mode, standard deviation, weighted & harmonic averages — with frequency tables and steps.

How It Works

  1. Enter your numbers. Comma-separated list for mean, median, mode, and more.
  2. Standard deviation. Choose population (σ) or sample (s) in the advanced block.
  3. Weighted average. Enter values and weights when some numbers count more.
  4. Harmonic mean. For rates and ratios — all values must be positive.
  5. See steps. Results panel and insight sidebar show formulas and breakdowns.

Also try our Percentage Calculator or Standard Deviation Calculator.

Enter values to see results.

Formula & Reference

Mean = Σx/n · Weighted = Σ(x·w)/Σw · Harmonic = n/Σ(1/x)