Screen Distance Checker
Check your screen distance with your webcam or calculate the ideal monitor distance for your screen size.
Use your device camera to estimate your face-to-screen distance in real time.
- Monitor should be at arm's length (50-70 cm / 20-28 inches) away
- Top of the screen should be at or slightly below eye level
- Tilt the screen back 10-20 degrees to reduce glare
- Position the screen perpendicular to windows to avoid reflections
- Use a document holder next to the screen if typing from paper
- Take a break every 20 minutes — look 20 feet away for 20 seconds
How Screen Distance Checker Works
Check your screen distance with your webcam or calculate the ideal monitor distance by screen size. ergonomic setup guide. Provide your input in the form above and the tool analyzes it instantly in your browser, giving you actionable results without sending data to any server.
Why Screen Distance Matters
The distance between your eyes and your screen directly impacts eye comfort, posture, and long-term health. Sitting too close causes eye strain, headaches, and myopia progression. Sitting too far forces you to lean forward, causing neck and back strain.
Recommended Distances
The general guideline is to keep your monitor at arm's length, approximately 50-70 cm (20-28 inches) from your eyes. For larger screens (27 inches and above), you may need to sit slightly farther back. For laptops, a separate keyboard allows you to position the screen at the correct distance.
How the Webcam Distance Check Works
This tool uses your device camera to detect your face and estimate its distance from the screen. It measures the apparent size of your face in the camera frame. Since face width is relatively consistent (about 14-15 cm for adults), a larger face in the frame means you are sitting closer. All processing happens locally in your browser — no images are sent anywhere.
Screen Size and Distance
Larger screens require greater viewing distance. A 24-inch monitor is comfortable at about 60 cm, while a 32-inch monitor is better at 70-80 cm. For phones held in hand, 30-40 cm is typical but further is better for reducing eye strain.
Ergonomic Monitor Setup
Position the top of your screen at or slightly below eye level. This allows your eyes to look slightly downward, which is the natural resting position and reduces eyelid opening (reducing tear evaporation). Tilt the screen back 10-20 degrees to reduce glare. Avoid placing the screen directly in front of a window to prevent backlight glare.
Preventing Posture Problems
Poor screen placement leads to forward head posture, rounded shoulders, and lower back pain. For every inch your head moves forward from neutral, your neck supports an additional 10 pounds of force. Proper screen distance encourages upright posture and reduces musculoskeletal strain.
Frequently Asked Questions
What is the ideal screen distance?
For desktop monitors, 50-70 cm (20-28 inches) is recommended — roughly arm's length. Larger screens may need slightly more distance. Phones should be held at least 30-40 cm from your eyes.
Does the webcam send my video anywhere?
No. All face detection and distance estimation runs locally in your browser using JavaScript. No images or video are sent to any server. Your privacy is fully protected.
Can sitting too close to a screen damage my eyes?
Prolonged close viewing causes eye strain and may contribute to myopia progression in children and young adults. While it does not cause permanent damage in adults, it leads to discomfort, headaches, and dry eyes.
How should I position my monitor height?
The top of your monitor should be at or slightly below eye level. This allows your eyes to look slightly downward at the screen, which is the most comfortable position and reduces tear evaporation.
Does screen size affect the recommended distance?
Yes. Larger screens need greater distance. A 24-inch monitor works well at 60 cm, while a 32-inch monitor is more comfortable at 70-80 cm. The goal is to see the entire screen without excessive eye movement.
Is Screen Distance Checker free to use?
Yes, Screen Distance Checker is completely free with no sign-up, no login, and no hidden fees. The tool runs entirely in your browser — your data never leaves your device.
Is my data safe when using this tool?
Yes. This tool runs 100% in your browser using JavaScript. No data is sent to any server, stored in any database, or shared with any third party. When you close the page, processing stops immediately.
Does this tool work on mobile devices?
Yes. Screen Distance Checker is fully responsive and works on smartphones, tablets, and desktop computers. The interface adapts to your screen size automatically.
Can I use this tool offline?
Yes. Once the page has loaded, Screen Distance Checker works without an internet connection. All processing happens locally in your browser.
Do I need to create an account to use Screen Distance Checker?
No. Screen Distance Checker requires no account, no registration, and no email. Just open the page and start using it immediately. Your inputs are auto-saved in your browser for convenience.