How long would it take for a person to be fully digested?

[IvesBentonEaton]

This is probably a bit generous; most carnivores, even snakes, usually kill prey before swallowing it. There is no significant air in stomachs and what little there might be would hardly constitute a breath, so asphyxiation would begin as soon as the prey reached the stomach, if not before. Perhaps four minutes to unconsciousness and ten to death.

Digestion, conversely, may take longer than depicted. For large prey (like a deer) in a large snake’s stomach, it may take as long as ten days to digest completely, with the softer tissues sloughing off first, and the bones decalcifying and disintegrating last. In fact, sometimes a snake will swallow prey too large for it and it cannot digest it before it rots in the stomach, killing the snake. And snakes have just about as efficient a digestive tract as the animal kingdom possesses.

Vore is best treated as fantasy, so pick whatever times suit you.

[CatTheHog]

for fully digested i think the maths on the acid is about 4 hours a pound.

[Filan]

physical size of the prey certainly would impact this, a 2" tall micro probably wont take much longer than any other meat to digest. of course they would run out of air sooner.

But leaving the air issue aside, I think time since last meal would also impact things as the digestive tract effectively shuts down when not needed. So in fact it might take longer if you are swallowed by someone who just woke up than say as a little something extra at the end of a meal.