Magnification
Calculate Magnification instantly with the exact formula and a worked example. Free online calculator — no signup.
Magnification
Objective focal, mm
Eyepiece focal, mm
Magnification
40
More about: Magnification
What it calculates
The “Magnification” calculator computes Magnification from 2 parameters: objective focal, mm, eyepiece focal, mm.
A standard physics formula used in educational and engineering tasks.
Example calculation
With parameters Objective focal, mm = 1,000, Eyepiece focal, mm = 25 the result is 40.
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.