Group Trip Cost Splitter with Uneven Shares
Group trips rarely split evenly — some people stay fewer nights or use fewer shared resources. Enter the total cost, group size, and how unevenly costs should be weighted to see a fairer per-person breakdown.
About this calculator
Split shared trip or event expenses fairly among a group when people join for different amounts of time or have different usage shares, and see who owes whom.
Frequently Asked Questions
How does the partial-share weight work?
It represents what fraction of a full share a partial participant pays — for example, someone staying half the nights at a 50% weight pays half of what a full-time participant pays.
What if everyone stays the same amount of time?
Set the number of full-share people equal to the group size, and the calculator will split the cost evenly among everyone.
Can I use this for costs other than lodging?
Yes — it works for any shared cost where participation varies, like groceries, a rental car, or a shared house, as long as you can define a fair weight for partial participants.