Paste your content and see its byte size, the version it needs, and how much each error correction level can hold — per the ISO/IEC 18004 standard.
QRDIV's free QR code capacity calculator: paste any content to instantly compute its byte size, encoding mode and the smallest version required, and compare maximum capacity and usage across the L/M/Q/H error correction levels. Capacities follow ISO/IEC 18004 and everything is computed locally in your browser.
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See whether your content fits
Paste on the left, read the headroom for each error correction level on the right.
Content to encode
0UTF-8 bytes
0Characters
—Mode
Paste your content and this will tell you which encoding mode it uses, and why.
Capacity by error correction level
Enter content to calculate
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What to know about QR capacity
The same code holds several times more digits than Chinese characters — it all comes down to encoding mode and error correction level.
Mode decides how much fitsDigits are cheapest, uppercase letters next, non-Latin text costs the most. At the same version, numeric mode holds 7,089 digits while byte mode holds only 2,953 bytes.
Error correction is paid for in capacityL through H buys more damage tolerance and spends usable capacity to get it. At V40, L holds 2,953 bytes; H holds just 1,273.
Non-Latin text costs 3 bytes a characterIt goes through UTF-8 byte mode — a Chinese character is 3 bytes, an emoji 4. Short-looking content can eat a lot of capacity.
Version is just the code's grid sizeVersions run 1 to 40, each step adding 4 modules per side. More content means a higher version, denser modules, and a code that's harder to scan when printed small.
FAQ
FAQ
It depends on mode and error correction level. The theoretical ceiling is version 40 at level L: 7,089 digits, 4,296 alphanumeric characters, or 2,953 bytes. But a code packed to that limit has extremely dense modules and is hard to scan in print — don't design against the ceiling.
