Free Averages & Ratios Calculators

Average Calculator — Mean, Median & Mode

Calculate the mean, median, mode, standard deviation, IQR, box plot, and more for any dataset.

Weighted Average Calculator

Calculate the weighted average of values with different weights.

Ratio Calculator — Simplify & Solve

Simplify ratios, find equivalent ratios, and solve ratio problems.

Proportion Solver — Cross Multiply

Solve proportions by finding the unknown value in a/b = c/d equations.

Grade Calculator — Weighted GPA & Final Grade

Calculate weighted final grades, simple averages, and GPA from up to 12 assignments. Find what score you need on remaining work to hit your target grade.

Harmonic Mean Calculator — Rates, Speeds & P/E Ratios

Calculate the harmonic mean of any dataset. Compare H, G, A means, verify AM-GM-HM inequality, see reciprocal table. Weighted harmonic mean mode included.