Pro Rata Calculator

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

Quote Builder

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. For the full idea, see what pro rata means.

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. Guides: how to calculate pro rata and splitting rent pro rata.

How many shares can I add?

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

Guides

What does "pro rata" mean?The plain-English version, with everyday examples. How to calculate pro rataThe formula, three worked examples, and the rounding trap. Pro rata salary explainedPart-time roles and mid-month starts, with numbers. How to split rent pro rataDays, room size, and move-in dates. Splitting utility bills pro rataElectricity, water, and internet by days home. How pro rata bonuses workMid-year hires and part-timers, with examples. Pro rata vacation daysPTO accrual for new hires. Pro rata refundsWhat you get back when you cancel early. Pro rata insurance premiumsPartial-year coverage and short rate cancellation. Pro rata dividendsWhat your share actually earns. View all guidesAll ten pro rata guides on one page.