QR code size on a TV screen

Size TV QR codes in centimetres of panel, not pixels — viewers sit 2–4 m away, which demands a 20–40 cm code. At 2.5 m that is 25 cm, which is 26% of a 43-inch screen's width, 21% of a 55-inch and 17% of a 65-inch. Keep it inside the title-safe area and hold it on screen.

Panel centimetres, not pixels

A TV code is scanned from the sofa, and the ten-to-one rule applies to the physical picture, not the video file:

Viewing distance	Code width on the panel
2 m	20 cm
2.5 m (typical living room)	25 cm
3 m	30 cm
4 m	40 cm

The same 1080-pixel graphic is a different physical size on every TV, which is why the design decision has to be made as a percentage of the frame.

The percentage arithmetic

Panel width for common 16:9 sizes, and what a 25 cm code (the 2.5 m sofa) means on each:

TV	Panel width	25 cm code as % of frame width
43-inch	95 cm	26%
55-inch	122 cm	21%
65-inch	144 cm	17%
75-inch	166 cm	15%

So a code meant to be scanned from a sofa must span roughly a fifth to a quarter of the frame — far larger than TV graphics habits allow. Run the numbers the other way to see why the habit fails: a discreet lower-third code at 8% of frame width is 9.8 cm on a 55-inch panel, scannable from about 1 m. Nobody's sofa is 1 m from the TV. Codes sized like channel logos are decoration.

Safe areas: broadcast vs streaming

Where the code sits matters as much as how big it is:

Broadcast: some TVs still apply overscan on broadcast inputs, cropping up to roughly 5% of every edge. Graphics that must survive it stay inside the title-safe region — approximately the central 90% of the frame. A code tucked hard into a corner is precisely the element overscan clips first, and a QR code missing one finder pattern does not scan at all.
Streaming and HDMI sources are rendered pixel-for-pixel on modern sets, so overlays in apps and livestreams can safely sit nearer the edge — though the sofa-distance maths is unchanged.

Duration and density

The panel is pristine and backlit, so damage-oriented redundancy is wasted — EC L or M keeps the version low and the modules physically large, which is everything at 2.5 m. Encode the shortest URL you can. And leave the code up: viewers must notice it, find a phone, unlock it and aim, so hold times are measured in tens of seconds — the timing evidence is in minimum on-screen duration, with campaign-side practice in QR codes in TV ads. Check your payload with the size calculator, and verify the graphic decodes after it has been through the compositing pipeline — scaling and compression can soften module edges before air.

FAQ

How big should a QR code be on a TV screen?

Physically 20–40 cm on the panel for viewers 2–4 m away. As a design rule that means a fifth to a quarter of the frame's width — 26% on a 43-inch TV and 21% on a 55-inch for the typical 2.5 m sofa.

What percentage of the screen should a TV QR code fill?

About 20–25% of frame width if viewers are meant to scan from a sofa at 2.5 m. Lower-third codes at 5–10% of frame width are only scannable from about a metre away.

Where should a QR code go in a broadcast graphic?

Inside the title-safe area — roughly the central 90% of the frame — because some TVs still overscan broadcast inputs and crop the edges. Losing one corner finder pattern makes the code undecodable.

How long should a QR code stay on screen?

Long enough for viewers to notice it, get their phone out and aim — tens of seconds, not five. Pair the code with a short readable URL for viewers who miss the window.