Average Calculator

Our free Average Calculator helps you calculate your exact age in years, months, and days from your date of birth — plus find the day of the week you were born with just a few inputs. Calculate arithmetic, geometric and harmonic mean, plus weighted averages. Enter your values, and the calculator instantly shows detailed results with breakdowns you can understand. No signup, no ads interrupting your workflow — just accurate, reliable calculations you can trust. Works on any device, saves nothing to our servers.