This works out a tip and splits the total between however many people are paying — rounding each person’s share up to the cent, not down, so the group’s shares always cover the actual bill.
Why rounding direction matters here
A $100 total split three ways is $33.333… each. Rounding down to $33.33 leaves the group a cent short of the actual bill; rounding up to $33.34 covers it, with a cent or two left over rather than missing. This calculator always rounds each share up for exactly that reason — a homemade bill split that quietly comes up short is the single most common bug in doing this by hand.
How to use this calculator
- Enter the bill amount before tip.
- Choose a tip percentage.
- Enter how many people are splitting it — leave at 1 if you are paying alone.
Frequently asked questions
Should I tip on the pre-tax or post-tax total?
Conventions vary and there is no single correct answer — many people tip on the pre-tax subtotal, some on the total including tax. This calculator takes whatever bill amount you enter; decide which figure to use based on your own custom.
Why doesn’t the per-person total exactly multiply back to the bill?
Because each share is rounded up individually to avoid anyone underpaying — multiplying the rounded per-person figure by the number of people can land a cent or two above the exact total, which is the deliberate trade-off for never landing short.
What’s a standard tip percentage?
It varies by country and by service context — this calculator defaults to 20%, a common US restaurant convention, but the field is fully adjustable for wherever and whatever you’re tipping on.
Can I use this for something other than a restaurant bill?
Yes — any bill-plus-percentage-plus-split works the same way, whether it’s a group takeout order, a shared service charge, or splitting a cab fare with a tip added.
What if I want an uneven split, not an equal one?
This calculator assumes an equal split between everyone. An uneven split — someone ordering more, say — needs each person’s own share worked out separately against their own portion of the bill.
