OptiDrop

Expense Splitter Online — Split Bills Among Friends Free

Split bills and expenses among friends or group members. Add multiple expenses, see who owes whom, and settle up easily. 100% free, no sign-up required.

Step 1: Add Group Members

Step 2: Add Expenses

Free Expense Splitter Online — Split Bills Easily

OptiDrop's Expense Splitter is a free online tool that helps you split bills and expenses among friends, roommates, or travel companions. Add your group members, enter each expense with who paid and who participated, and the tool calculates exactly who owes whom. Perfect for trips, dinners, shared households, and group activities.

How Does the Expense Splitter Work?

Start by adding the names of everyone in your group. Then enter each expense: the description, amount, who paid, and which members participated. The tool tracks each person's total paid and total share owed, then uses a debt simplification algorithm to determine the minimum number of payments needed to settle all balances.

Perfect for Group Trips

Planning a group trip? Add all your shared expenses as you go -- hotel, meals, transportation, activities. At the end of the trip, click Calculate Settlement to see the simplest way for everyone to settle up. Each expense can include different participants, so no one pays for things they did not join. All calculations happen in your browser with no data uploaded anywhere.

Frequently Asked Questions

Add your group members, then enter each expense with who paid and who participated. The tool calculates each person's fair share and determines the simplest set of payments to settle all debts. It handles multiple expenses for trips or group activities and shows exactly who owes whom and how much.
Yes. When adding an expense, you can choose which members participated. Only those members will share that specific cost. This means if someone did not participate in a particular activity, they won't be charged for it. Each expense can include different subsets of the group.
The tool calculates the net balance for each person (total paid minus total share owed). It then uses a debt simplification algorithm to determine the minimum number of transactions needed to settle all balances. This means fewer payments to make, making it easier to settle up after a trip or group event.
No. All calculations happen locally in your browser. No expense data, names, or amounts are sent to any server. Your financial information stays 100% private on your device. You can safely enter real amounts and names without worrying about data privacy.

Last updated: June 2026