Microscope Magnification Calculator
Enter the eyepiece and objective powers. The calculator reports their product as total optical magnification.
Magnification alone does not predict resolution or image quality.
A QUICK WALKTHROUGH
How to use this tool
- Enter positive eyepiece and objective powers.
- Choose the unit shown for each input if your labels use ×.
- Review the calculated total magnification; it does not predict resolution or image quality.
Simple product
Total magnification = eyepiece power × objective power. The result is a nominal optical magnification estimate.
Units and limits
Enter positive finite powers. The × label is a multiplier notation, not a physical unit; do not mix focal lengths with magnification powers.
What this does not tell you
Magnification alone does not establish resolution, field of view, brightness, contrast, or image quality. Those depend on the microscope, optics, specimen, and illumination.
GOOD TO KNOW
Common questions
What inputs does this calculator need?
The eyepiece power and objective power, such as 10× and 40×.
Does 400× guarantee more detail?
No. It is only the nominal magnification product and does not predict resolution or image quality.