Diopter Conversion Calculator

Convert Focal Length to Diopter

Formula

The formula to convert focal length to diopter (D) is:

\[ \text{D} = \frac{1000}{\text{F}} \]

Where:

Diopter Definition

A diopter is a unit equal to the reciprocal of the focal length of a lens (in meters), that describes the refractive power of that lens.

Example Calculation

Let's assume the following value:

Using the formula:

\[ \text{D} = \frac{1000}{200} = 5 \text{ 1/m} \]

The Diopter (D) is 5 1/m.