Reading Glasses Strength Chart
Choosing the right reader strength is easier than you think. Reading glasses are measured in diopters, from +1.00 to +4.00, and your age is a reliable starting point. Here's how to find your number.
Strength by Age (A Starting Guide)
- Age 40–44: +1.00 to +1.25
- Age 45–49: +1.50 to +1.75
- Age 50–54: +2.00 to +2.25
- Age 55–59: +2.50 to +2.75
- Age 60+: +3.00 to +4.00
How to Test at Home
- Print a diopter test chart or open a reading sample on your screen.
- Hold it about 14 inches (35 cm) from your face.
- Start with the lowest strength and work up until the smallest text is crisp.
- Choose the lowest strength that reads clearly — too strong causes strain.
Every Strength, One Style
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