Split expenses online
Dong is each person’s share of a group expense. Add your group and who paid for what to see everyone’s share and the fewest transfers to settle up. Free, no sign-up.
Group and members
Members
Separate several names with commas.
- Add yourself and the people you’re splitting with.
Split trip and group expenses, simply and exactly
Splitting means working out each person's share of what the group spent together. This calculator adds up the expenses, works out every share and tells you who pays whom, with the fewest transfers.
What does "dong" mean?
In Persian, "dong" (from "dang", one sixth of something) is each person's share of a shared cost. Paying your dong means paying your part of what the group spent.
Split expenses in three steps
- Members: add everyone on the trip.
- Expenses: the amount, who paid, and who shares it.
- Settle up: see each share and the list of transfers, then send it to the group.
How the split is calculated
Each share is the total spent divided by the number of people. Subtract a person's share from what they paid: a positive balance means they are owed money, a negative one means they owe. People who owe pay the people who are owed until everyone is at zero.
Example: a four-person road trip
Ali paid for the villa, Sara for fuel, Reza for dinner, and Mina paid nothing. The total is 6,000,000 toman, so each share is 1,500,000 toman.
| Person | Paid | Share | Result |
|---|---|---|---|
| Ali | 4,000,000 | 1,500,000 | owed 2,500,000 |
| Sara | 1,200,000 | 1,500,000 | owes 300,000 |
| Reza | 800,000 | 1,500,000 | owes 700,000 |
| Mina | 0 | 1,500,000 | owes 1,500,000 |
Three transfers settle it: Mina pays Ali 1,500,000, Reza 700,000 and Sara 300,000. The calculator at the top of this page does this for you.
Split any shared cost
- Trips: accommodation, fuel, food and tickets.
- Restaurants and cafés: use "Exact" when everyone ordered something different.
- Parties and birthdays: food, cake and group gifts.
- Housemates: rent, bills and groceries.
- Hiking and camping: supplies, shared gear and car hire.
When shares aren't equal
If someone wasn't part of an expense, untick them. For couples, choose "By shares" and give them two shares. If everyone ordered separately, use "Exact".
Why this calculator
- No sign-up, no install and no bank account needed.
- Equal, by-shares or exact split for every expense.
- The fewest transfers to settle the group.
- Send the result to the group with one tap.
- Names and amounts stay in your own browser.
On iPhone and Android
This page works in iPhone Safari and any Android browser without installing anything. For payment reminders and keeping track of future trips, install the TourOn app.
Read more
Frequently asked questions about splitting expenses
What does "dong" mean?
In Persian, "dong" (from "dang", one sixth) is each person's share of a cost the group paid together. A dong calculator works out those shares and who pays whom.
How is a group split calculated?
Each person's share of a shared expense is compared with what they paid, which shows who is owed money and who owes it.
What is the formula for splitting expenses?
Each share is the total divided by the number of people. What someone paid minus their share shows whether they are owed or owe.
How do I split a trip?
Add the people on the trip, log each expense with who paid it, and tap "Calculate split". You'll see each share and the transfers needed to settle up.
How do I split a restaurant bill?
If everyone had about the same, use an equal split. If orders differed, choose "Exact" and enter each person's amount. Add the service charge as a separate equal expense.
What if someone only joined for part of the trip?
Untick them on the expenses they weren't part of, so their share only covers what they joined.
How do I split costs for couples or families?
On that expense choose "By shares" and give the couple or family two shares, so they count as two people.
Is the calculator free?
Yes. No sign-up and no install; it works in any phone or desktop browser.
Does it work on iPhone?
Yes. Open this page in Safari and everything works as on Android. To install TourOn on iPhone, use "Add to Home Screen" in Safari.
What does "fewest transfers" mean?
Debts are netted so that, instead of everyone paying several people, the group settles with the fewest card-to-card transfers.
Where is my data stored?
Names and amounts stay in this browser on this device and are never sent to TourOn's servers.