Pro Rata Calculator

Enter a total, add shares, and get the exact split in seconds.

Questions

What is a pro rata calculation?

Pro rata divides a total in proportion to each party's share. If two people split $100 with shares of 3 and 2, the first owes $60 and the second $40.

When do I use pro rata?

Splitting rent by room size, dividing a shared bill, prorating a salary for partial-month work, allocating investment returns, calculating insurance refunds.

How many shares can I add?

Unlimited. Type each share on a new line. The result table shows every persons amount.