Magnification calculator

Pick a mode and enter your values. Results update when you click Calculate or press Enter.

Focal length → X-power X-power → Focal length Microscope total Diopter → X-power

Focal length (centimeters)

X-power (magnification)

Calculate total

Diopters

Formulas used: Simple magnifier: M = 25 ÷ f (f in cm) · Microscope total: eyepiece × objective · Diopter conversion: X = (D ÷ 4) + 1