This tool splits the cost of a shared group gift evenly across contributors — down to the last cent — so the collected amounts always add up to the exact total. It is ideal for office collections, joint birthday presents, and any pooled purchase, with an optional organiser top-up.
How it works
Enter the gift total and the number of contributors. The tool divides the amount evenly, but because money rounds to two decimal places a clean split is rare. To avoid losing or gaining cents, it gives most people the rounded-down share and adds the leftover cents one at a time to the first few contributors. The shares therefore total the exact gift cost.
If you add an organiser top-up, that amount is subtracted from the total first, then the remainder is split among everyone — so the organiser pays their normal share plus the top-up.
Worked example
A $100 gift split among 3 people:
- $100 ÷ 3 = $33.333…, rounded down to $33.33 each.
- 3 × $33.33 = $99.99, leaving 1 cent.
- That cent is added to one person.
| Person | Pays |
|---|---|
| Person 1 | $33.34 |
| Person 2 | $33.33 |
| Person 3 | $33.33 |
| Total | $100.00 |
Organiser top-up: how and why
Group collections often have an organiser who spends time finding the gift, co-ordinating the collection, and sometimes covers a portion themselves. The top-up field lets an organiser offset their extra contribution before the split is calculated.
For example, a $250 gift for 8 people, where the organiser covers $30 as a top-up:
- Amount to split = $250 − $30 = $220
- Each of 8 people: $220 ÷ 8 = $27.50 (splits cleanly in this case)
- Organiser’s total: $27.50 (share) + $30.00 (top-up) = $57.50
Practical tips for running a group collection
- Ask for a round number — if the gift costs $143, consider asking each person for a round amount and either holding the difference for a card and wrapping, or putting any excess toward a card.
- Collect before buying — this avoids the awkward situation of chasing reimbursements after the purchase. Use the splitter to tell people their exact share upfront.
- Handle decliners early — if someone opts out after the initial ask, re-enter the reduced headcount to recalculate what everyone else owes.
- Currency — the tool does arithmetic only; enter the amount in whatever currency you are collecting and the result will be in the same currency.
Rounding: why one person pays a penny more
Money arithmetic in most currencies only goes to two decimal places, so a perfectly even split is rare. Dividing $100 among 3 people gives $33.333…, which must round to $33.33 or $33.34. The straightforward approach — round everyone to $33.33 and call it done — loses a penny from the total. This tool instead assigns the extra cents one per person to the first contributors in the list, so the shares sum exactly to the gift total. The difference is never more than one cent per person.
Everything is calculated locally in your browser — no amounts or names leave your device.