Check roughly how well you see at a distance with a letter chart drawn to the correct size for your screen and how far away you sit. Size it once with a bank card, choose your distance, then cover one eye and read down the lines from 6/60 (20/200) to 6/3 (20/10). Use the tumbling E chart for young children or anyone who does not read the Latin alphabet: just point which way the E faces.
loading toolHow to use the eye test chart
- Open “Size the chart to your screen” and match the box to a bank card (once).
- Choose how far you will sit or stand from the screen (3 m works for most rooms).
- Cover one eye and read each line from the top.
- Note the smallest line you read mostly correctly, then test the other eye.
Good to know
- Use the largest screen you have, such as a laptop or TV, at 3 m or more for the small lines.
- The size you set is shared with our Online Ruler tool, so you only calibrate once.
- Press New letters to shuffle them so nobody can learn the chart by heart.
Questions
Is this a real eye test?
This is a free screening aid, not a medical test. Screens, speakers, lighting and distance all affect the result, so it cannot diagnose anything. If you notice a change in your eyesight or hearing, see a qualified optometrist, audiologist or doctor. An eye examination also checks eye health, which no chart can do.
What does 6/6 or 20/20 mean?
It means you can read at 6 metres (20 feet) what a person with standard sight can read at 6 metres. 6/12 (20/40) means you need to be at 6 m to read what standard sight reads from 12 m. Many countries require about 6/12 with glasses for driving.
Why do I need a bank card?
Screens have different pixel sizes, so a letter that is 1 cm tall on one phone is smaller on another. A bank card is the same width everywhere (85.6 mm), so matching it lets the tool draw letters at their true size.
Is my data private?
Yes. Everything happens inside your own browser: nothing you type or choose is uploaded to us or anyone else.
Is it free?
Completely free, with no sign-up, no watermark and no limit on how many times you use it. Light ads keep the site running.
