Why individually rounded bill shares do not always add up
An equal split can produce fractions smaller than the currency allows you to pay. Allocate the remainder after rounding rather than assuming everyone’s independently rounded amount will reconcile.
Tip & split bill →Separate mathematical precision from payment precision
A mathematical average can have infinitely many decimal digits, while a payment normally uses a supported minimum currency unit. Not every currency has two decimal places, so the payment precision should be confirmed rather than assumed. The displayed per-person amount is a convenient estimate, not a mechanism for assigning indivisible remainders.
Split one hundred between three people
The exact division is 100/3 = 33.333… . If all three pay 33.33, their total is 99.99. One person can instead pay 33.34 while the other two pay 33.33, making exactly 100. The additional 0.01 is a rounding allocation, not an extra gratuity. A similar issue can arise after a percentage tip is added to the original bill.
Set the total before allocating the difference
First establish the bill plus the deliberately selected tip, then calculate equal shares and distribute the remaining minimum units. If diners pay on separate cards, the venue may apply tips or rounding separately, so check the final receipts. The calculator does not choose which person bears a remainder. Agreeing on that small allocation explicitly is more reliable than repeatedly adjusting the percentage to force an apparently equal result.
Try the calculators
- Tip & split bill
Add a tip and split the bill evenly.
- Percentage calculator
Find a percentage of any number.
- Average & median
Find the mean, median and sum of a list.