Calculate reading glasses diopters

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Calculating the power of reading glasses – how to find the right number of diopters

Would you like to know what dioptre strength your new reading glasses should have? With our free online guide at Lesebrille.de, you can easily determine your reading prescription yourself – quickly, easily and without visiting an optician.

What are diopters?

The diopter value indicates how powerful the lens of your glasses needs to be to correct your visual acuity. Reading glasses are particularly necessary for presbyopia – usually from the age of 40 – in order to be able to read texts, books or screens clearly and comfortably again.

This is how easy it is to determine strengths

With our guide and a simple A4 sheet of paper, you can determine your optimum reading distance in just a few steps – and the right prescription for your glasses.

Typical diopter values for reading glasses

  • +1.0 to +1.5 – mild presbyopia (approx. 40-45 years)

  • +2.0 to +2.5 – moderate visual impairment (from approx. 50 years)

  • +3.0 to +3.5 – more powerful presbyopia (from approx. 60 years)

These values are guidelines – our tool shows you your individual reading glasses prescription.

Calculate diopters now and find the right reading glasses:
Start our free guide and discover your perfect pair of reading glasses – from the comfort of your own home. If you have any questions, please do not hesitate to contact our customer service.

Calculating diopters for reading glasses

Especially when you buy your first pair of reading glasses, the question arises: What power do I need? With our diopter calculator for reading glasses, you can easily calculate the required reading power yourself.

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Enter your personal acuity distance here - i.e. the shortest distance at which you can see everything clearly without glasses. However, if this distance is greater than 2 meters, you should have your required correction determined by an optician or ophthalmologist.

As a general rule, although this calculator will give you an indication, a reliable determination of your vision can only be carried out by qualified ophthalmologists and opticians.