Free tools
Expense splitting tools
Fifteen calculators that answer one precise question in seconds. Everything runs in your browser: no account, nothing stored.
Pick the right calculator
Equal split
Who owes whom after a night out or a weekend, based on what everyone paid.
Restaurant bill
Split in proportion to what each person ordered, tip and shared extras included.
Flatshare rent and bills
The monthly housing budget, split evenly or on shares you agree together.
Split by income
Contributions proportional to income, for couples and housemates.
Percentage split
A 60/40 or 50/30/20 key, with an automatic check that it adds up to 100%.
Share-based split
Two shares per adult, one per child: the most intuitive key.
Fuel and tolls
Fuel, tolls and parking split by the legs each person actually travelled.
Airbnb by nights
Two methods to choose from: proportional to nights, or night by night among those present.
Bills by days present
Electricity, water and subscriptions split by days spent at home.
Trip cost per person
Budget by category and the figure to announce to each traveller.
Prorated rent for a partial month
Moving in or out mid-month, worked out on the real calendar days.
Rent by room size
Private share prorated by square metres, shared spaces divided equally.
Who owes who
From everyone's balances, the list of transfers that brings them back to zero.
Multiple payers
One expense fronted by several people: shares, balances and repayments.
Expense for selected people
Tick who was involved: everyone else stays at zero and the total still adds up.
Fair maths, down to the cent
All of these tools use the same arithmetic as the app: amounts in whole cents and a largest remainder distribution of the leftovers. The shares therefore always add up exactly to the total, whichever key you choose.
No amount, name or income entered here leaves your browser: nothing is sent to a server or placed in the page address.
When a group becomes easier
A calculator answers a one-off question. As soon as there are several expenses, several payers and several days, a shared group is more comfortable: everyone adds their spending from their phone and the balances update on their own.
Editorial review — Written and reviewed by the Pivunio team. The methods described here are the ones the app itself uses, and they are covered by automated tests.