Method
Arithmetic averages sums; weighted averages scale contributions; geometric averages logs; harmonic averages reciprocals; RMS averages squares then takes a root.
Math worksheet
Average Calculator
Choose arithmetic, weighted, geometric, harmonic or root-mean-square averaging and compare the result with the ordinary mean.
The calculation runs locally. Exact-integer tools avoid floating point; decimal and transcendental tools report rounding limits.
Method and verification guide
How the Average Calculator works
Arithmetic averages sums; weighted averages scale contributions; geometric averages logs; harmonic averages reciprocals; RMS averages squares then takes a root. The calculator keeps the intermediate values visible so you can reproduce the answer independently.
Interpret the result
The correct average depends on whether quantities combine additively, multiplicatively, as rates, with unequal importance, or as magnitudes.
Check the assumptions
Geometric and harmonic means require positive values here; weighted mode requires matching nonnegative weights with a positive total.
Local calculation
Everything runs in this browser. Inputs are not sent to an external calculator.
Rounding
Displayed values may be rounded for readability while calculations use full floating-point precision unless the tool explicitly uses exact integers.
Scope
Geometric and harmonic means require positive values here; weighted mode requires matching nonnegative weights with a positive total.
Simple by design
Three steps to a clearer number.
Enter your details
Use realistic values in each field. You can change them anytime.
Calculate instantly
The formula runs locally, so there is no account or waiting time.
Use the result
Treat the answer as a practical estimate for your next decision.