Quadratic Mean (RMS)
Calculate Quadratic Mean (RMS) instantly. Free online calculator with the exact formula, a worked example, and metric units. No signup required.
Quadratic Mean (RMS)
x₁
x₂
x₃
RMS (root mean square)
4.0825
More about: Quadratic Mean (RMS)
What it calculates
The “Quadratic Mean (RMS)” calculator computes RMS (root mean square) from 3 parameters: x₁, x₂, x₃.
A core calculation for studying, engineering tasks, and checking solutions.
Example calculation
With parameters x₁ = 3, x₂ = 4, x₃ = 5 the result is 4.08 (√(Σx²/n)).
How to use
- Enter the parameter values — every field above is adjustable with a slider.
- The result and related metrics are calculated automatically as you type.
- Use the additional metrics shown (if any) where needed.
- Copy the result or bookmark the page.