Progressive Lens Fitting Calculator
Determine if your frame is suitable for progressive lenses based on fitting height, frame dimensions, and add power.
Inputs
mm
mm
mm
D
Results
Fitting Height
22 mm
Minimum Frame Height
22 mm
Frame Suitable (0=No, 1=Yes)
1
Recommended Corridor Length14 mm
How to Use This Calculator
- Enter the Pupil Height in mm — the distance from the bottom of the lens opening to the center of the pupil (measured by your optician).
- Enter the Frame Height (B measurement) in mm — the vertical dimension of the frame's lens opening.
- Enter the Reading Add Power from your prescription in diopters (the ADD value, e.g., +2.00 D).
- Review the Fitting Height, Recommended Corridor Length, and Minimum Frame Height required.
- Check the Frame Suitable output — if 0 (No), the frame height is too small for your add power and a taller frame is needed.
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