Which split is fairest?
By person-night is the fairest when people arrive or leave on different days: someone staying two nights pays for two, not the whole weekend. By person suits a group that's together the whole time. Evenly per family is simplest when families are similar in size.
Children are often counted as half a share, since they eat less and share rooms. Pick what your group agrees on.
Keep it simple on the day
One person books on Airbnb and the others pay them back. Paste the summary into your group chat so everyone sees the same numbers before you book.
Questions
How do you split an Airbnb between families?
Total the house and shared costs, then divide by person-nights: each person's number of nights, added up. Each family pays its share of that total. The calculator does this for you.
Should kids pay the same as adults?
Many groups count children as half a share, or free for the very young. Choose the option your group prefers.
