Optical Calculators

At Chadwick Optical, we use a range of calculators every day to ensure the highest standard of care. We believe in sharing our knowledge, so we've made some of our most useful tools available here. These calculators are designed for opticians and students in the optical industry to assist with daily calculations.

*Please note: When processing lenses in the US, we make certain assumptions about the index of refraction that may not apply in other parts of the world.