Roommate Expense Splitter

How to use the roommate expense splitter

Add the shared expenses, then assign a relative weight to each roommate. Equal weights produce an equal split. A weight of two gives twice the share of a weight of one. The total is converted into cents and allocated proportionally. Any leftover cents are assigned to the largest fractional remainders, keeping the final shares equal to the exact shared total. Names are used only as labels in the result.

How can I account for a larger bedroom?

Agree on weights and enter them directly. For example, weights of 1.2 and 1 assign a larger share to the first person. The calculator does not decide which weights are fair.

Can a roommate have a zero share?

Yes, provided at least one other weight is positive. Private bills, deposits and money already paid are not automatically deducted; include only the shared amount you intend to allocate.

How should I compare scenarios?

Start with the example, then replace every relevant value with your own figures. Keep the currency and time periods consistent. Change one assumption at a time and calculate again to see its effect. The initial values are examples, not recommended rates, prices or budgets. When comparing alternatives, include the same categories in each scenario so that a missing expense does not make one choice appear cheaper.

Can I save or share the result?

Use Copy summary for a concise text result, or Export CSV for the available figures. Calculations run in your browser; entered amounts are not uploaded by this tool. An exported file contains your information, so choose where to store or share it. Displayed amounts are rounded to two decimal places, while most intermediate calculations retain additional precision. Small differences from a bill or statement can therefore occur.

What should I check before using the numbers?

Read the calculation assumptions beside the result and confirm the inputs against the relevant quote, agreement or records. This tool provides an estimate based on those inputs, not an approval, market forecast or personalized financial recommendation. Refresh the calculation when your circumstances or the underlying terms change.