If you are wondering what thickness of lenses will be according to your prescription for glasses, thenLens thickness calculator will calculate the thickness of a spherical monofocal lens for you.- 7 different materials with different refractive indices- the ability to know the thickness of the astigmatic lens at any angle of the cylinder- the ability to calculate the thickness taking into account any curvature of the front surface of the lens- the ability to specify any thickness along the edge or center of the lens- the ability to calculate the required diameter of the lens by measuring the setting of the frame- availability of the glossary, in case you have any questions about any of the parameters, necessary for correct thickness calculation- support Ukrainian, English and Português languages- the ability to convert an astigmatic lens into the opposite cylinder- share calculation result via social network- compare few lenses side by side