Choose prescription

If your prescription for glasses is less than 400, you don't need to convert, just select the corresponding degree.

Convert a glasses prescription to a contact lens prescription
400~750		775~1125
glasses	contact lens	glasses	contact lens
-4.00	-3.75	-7.75	-7.00
-4.25	-4.00	-8.00	-7.25
-4.50	-4.25	-8.25	-7.50
-4.75	-4.50	-8.50	-7.75
-5.00	-4.75	-8.75	-7.75
-5.25	-5.00	-9.00	-8.00
-5.50	-5.00	-9.25	-8.25
-5.75	-5.25	-9.50	-8.50
-6.00	-5.50	-9.75	-8.75
-6.25	-5.75	-10.00	-8.75
-6.50	-6.00	-10.25	-9.00
-6.75	-6.25	-10.50	-9.25
-7.00	-6.50	-10.75	-9.50
-7.25	-6.50	-11.00	-9.75
-7.50	-6.75	-11.25	-9.75