How to use the shared stay cost splitter
- Enter the total lodging cost, the check-in date and the check-out date.
- List each person with the date they arrive and the date they leave.
- Check that every night of the stay is covered by at least one person.
- Read each person’s nights and share. The shares add up exactly to the total.
Formula
cost per night = total / number of nights
on each night, each person present pays cost per night / people present
share = sum of that person’s nightly portions, with cents settled by largest remainder
A person is counted for a night when their arrival date is on or before it and their departure date is after it. A person who leaves on the morning of a date is not counted for that night.
Three friends in a four night rental
A rental costs $1,200 for the nights of July 10 to 13, 2026, which is $300 a night. Ana stays all 4 nights. Ben stays the first 2 nights, July 10 and 11. Cy stays the last 2, July 12 and 13.
On each of the first two nights, Ana and Ben share $300, $150 each. On the last two nights, Ana and Cy share, $150 each. Ana pays $600.00 for 4 nights, and Ben and Cy each pay $300.00 for 2 nights. The shares add up to $1,200.00.
Why split by nights
An equal split asks people who stay two nights to pay the same as people who stay four. Splitting each night among the people present is fairer and easy to explain. The same night costs the same, whoever is there, and the more people on a night the less each pays.
Some groups choose different rules, such as paying more for a larger room or for the weekend. This page uses equal nights, so adjust by hand if you agree on something else.
Exact cents and unfilled nights
Dividing money often leaves fractions of a cent. The page works out each exact share, rounds down, and gives the extra cents to the shares with the largest fractional parts, so the total always matches. If a night has nobody staying, its cost has no one to share, and the page asks you to fix the dates. For other kinds of shared costs, see the Trip Cost Split Calculator, the Itemized Bill Splitter and the Rent Split Calculator.
Assumptions and limits
- Every night of the stay costs the same.
- People share a night equally, with no preference for room size or bed.
- Taxes and fees are inside the total you enter.
- The total, dates and names shown when the page opens are examples.
Frequently asked questions
What counts as a night?
The night that starts on the arrival date. A person arriving on July 10 and leaving on July 12 stays the nights of July 10 and 11, which is 2 nights.
Why does the page refuse a night with nobody staying?
Because no one would pay for it. Either shorten the check-in and check-out dates, or add the person who is there.
How many people and nights can I enter?
Up to 12 people and a stay of up to 90 nights.
Can I use a nightly rate instead of a total?
Multiply the rate by the number of nights and enter the total. The page splits that amount.