The amount of values that can be written on an NFC tag depends on the Tag you are using and the memory the tag can store. Below are a few of the popular options and how many bytes of data can be stored on to the tags.
NTAG213: 144 bytes
NTAG215: 540 bytes
NTAG216: 888 bytes
NTAG424: 4 KB
ICODE SLIX: 1 KB
Seritag - 22 Nov 2024