Bill Split Calculator
Split a group bill evenly with tip — the per-person number front and center.
Updated
Each person pays
$35.40each
$141.60 total across 4 people
- Bill
- $120.00
- Tip (18%)
- $21.60
- Grand total
- $141.60
- Per person
- $35.40
Estimates for general information, not financial advice.
In short
How do I split a $120 bill with tip between 4 people?
$35.40 each: an 18 percent tip on a $120.00 bill is $21.60, the grand total is $141.60, and 141.60 divided by 4 people is $35.40 a head. Add the tip to the bill before you divide, never after, so the percentage you chose survives the split intact.
This is an even split, where everyone pays the same share; settling by what each person ordered is a different calculation with a different answer.
How to use the bill split calculator
Enter the total bill, how many people are sharing it, and the tip percentage, and the calculator leads with the one number a table actually wants, which is what each person owes. That is the whole point of a split tool.
A plain tip calculator stops at the tip and the grand total, but this one is group-first and puts the per-head figure front and centre so nobody has to divide in their head while the server waits. Move the people control from one to twenty and watch the share fall as the bill spreads across more heads.
Paying the whole check yourself?
A tip calculator stops at the tip amount and the grand total, which is what one person paying alone needs, with the preset rates and a custom field alongside.
Open the tip calculator →$21.60
Tip at 18%
on the $120.00 default bill
$141.60
Grand total
bill plus tip, before dividing
$35.40
Each of 4
the number the table needs
The order of operations matters more than it looks. Tip on the whole bill first, then divide the grand total, and the percentage you chose lands intact.
Dividing first and letting everyone apply their own rate to their own share happens to produce the same answer when every rate is identical, because percentages distribute across addition, but that is rarely what actually happens at a table. What happens is that some people round down, one person tips less, and the pooled money quietly falls short of the total.
Rounding each share up to the next whole dollar is the fix: four people paying $36 against a $35.40 share put in $144.00 against a $141.60 total, and the $2.40 surplus simply lifts the tip.
Even splitting is not always the fair split, and it is worth naming when it is not. If one person had a $60.00 steak and another had a $12.00 salad, dividing the total equally moves money from the salad to the steak, and once tax and tip are added on top the transfer is larger than the food difference alone.
The proportional approach is to give each person their own items, then add tax and tip in the same proportion as their share of the subtotal: someone whose items are 30 percent of the subtotal owes 30 percent of the tax and 30 percent of the tip. This tool does not do that itemised calculation. It does the common case, where the meal was roughly comparable and speed matters more than precision.
Cents are the last practical problem. A $141.60 total across 6 people is $23.60 exactly, but across 7 it is $20.2286, which cannot be paid, so somebody has to absorb the rounding.
Either one person covers the extra few cents or everyone rounds up and the pot runs slightly over, and a few cents is rarely worth a discussion. Card splitting changes the picture again: many restaurants will run several cards on one check, and asking for that before the check is printed is easier than after.
Do
- Tip on the whole bill first, then divide the grand total by the number of people.
- Round every share up to the next whole dollar so the pot covers the total.
- Ask for several cards on one check before the check is printed.
- Settle by items when one person had a $60.00 steak and another a $12.00 salad.
Don't
- Divide the bare bill first and leave everyone to apply their own rate afterwards.
- Round shares down, because a $1.60 shortfall comes out of the tip and not the restaurant.
- Expect $141.60 to divide cleanly across 7 people, since $20.2286 cannot be paid.
- Add a tip on top of a service charge without checking whether one is already there.
Per-person shares at an 18 percent tip for common bill sizes and party sizes, so a table can settle up without retyping anything. Every figure is the engine output, with the tip taken on the whole bill and the grand total then divided evenly.
| Bill | Tip at 18% | Grand total | Each of 2 | Each of 4 | Each of 6 |
|---|---|---|---|---|---|
| $40.00 | $7.20 | $47.20 | $23.60 | $11.80 | $7.87 |
| $50.00 | $9.00 | $59.00 | $29.50 | $14.75 | $9.84 |
| $60.00 | $10.80 | $70.80 | $35.40 | $17.70 | $11.80 |
| $75.00 | $13.50 | $88.50 | $44.25 | $22.13 | $14.75 |
| $80.00 | $14.40 | $94.40 | $47.20 | $23.60 | $15.74 |
| $100.00 | $18.00 | $118.00 | $59.00 | $29.50 | $19.67 |
| $120.00 (the tool default) | $21.60 | $141.60 | $70.80 | $35.40 | $23.60 |
| $150.00 | $27.00 | $177.00 | $88.50 | $44.25 | $29.50 |
| $175.00 | $31.50 | $206.50 | $103.25 | $51.63 | $34.42 |
| $200.00 | $36.00 | $236.00 | $118.00 | $59.00 | $39.34 |
| $250.00 | $45.00 | $295.00 | $147.50 | $73.75 | $49.17 |
| $300.00 | $54.00 | $354.00 | $177.00 | $88.50 | $59.00 |
| $400.00 | $72.00 | $472.00 | $236.00 | $118.00 | $78.67 |
| $500.00 | $90.00 | $590.00 | $295.00 | $147.50 | $98.34 |
Should the table round up or down?
Rounding is where a table actually loses money. Four shares of $35.40 rounded up to $36 put $144.00 into the pot against a $141.60 total, and the $2.40 surplus lifts the effective tip from 18 percent to exactly 20 percent.
Round the same shares down to $35 and the pot holds $140.00, which is $1.60 short of the total, so the restaurant is paid in full only if the tip absorbs the difference, dropping the effective rate to about 16.7 percent. Rounding up is the safe direction and the difference is small either way.
Read it: Rounding down leaves the pot $1.60 short and the shortfall comes out of the tip; rounding up adds $2.40 and lifts the effective rate from 18 to exactly 20 percent.
Four even shares of the $120.00 default bill at an 18 percent tip.
The formula, worked line by line
The split is three steps in a fixed order: work out the tip on the bill, add it to get the grand total, then divide that total by the number of people. Nothing about it is difficult, but the order is what keeps the tip at the rate you intended.
The reason the order survives scrutiny is that multiplication distributes over division, so tipping the whole bill and then splitting is mathematically identical to splitting and then having each person tip at the same rate. It is only identical in theory, though, because in practice everyone rounds their own share differently and the shortfall always lands on the tip.
tip = bill × (tip% ÷ 100)
grand total = bill + tip
per person = grand total ÷ people
120 × 0.18 = 21.60, so 141.60 ÷ 4 = 35.40- Bill
- $120.00
- Tip at 18 percent
- 120 × 0.18 = $21.60
- Grand total
- $141.60
Each person owes 141.60 ÷ 4 = $35.40, of which $5.40 is their share of the tip. Bump the rate to 20 percent and the total becomes $144.00, or $36.00 each, so two percentage points cost each person 60 cents. Drop to 15 percent and it is $138.00, or $34.50 each. The same $120.00 across 6 people at 18 percent is $23.60 a head.
An even split is not the same as a proportional one. If the party ordered very differently, the fair method is to assign each person their own items and then allocate tax and tip in proportion to their share of the subtotal, so someone accounting for 30 percent of the food owes 30 percent of the tip.
This tool deliberately does not model that, because the common case is a comparable meal and a table that wants a number quickly. Everything here is general information about arithmetic and a social convention, not advice about what anyone should pay.
Questions people ask
How do you split a bill with tip evenly?
Add the tip to the bill first, then divide the grand total by the number of people. For a $120.00 bill at 18 percent, the tip is $21.60 and the grand total is $141.60, so four people owe $35.40 each. Splitting the bill and the tip separately gives the same result when everyone uses the same rate, but adding them first and dividing once is faster and far harder to get wrong at a table where people are reaching for cards and doing mental arithmetic over conversation.
How is this different from a tip calculator?
A tip calculator stops at the tip amount and the grand total, which is what one person paying alone needs. This tool runs the same arithmetic but leads with the per-person figure, because that is the number a group actually has to act on. You still see the tip and the total alongside it, so anyone at the table can check the working, but the headline is what each person owes. It also caps the party at twenty people, which covers essentially every restaurant table.
Should everyone round their share up or down?
Up. If each share comes to $35.40, four people putting in $36 contribute $144.00 against a $141.60 total, and the $2.40 surplus lifts the effective tip from 18 percent to 20 percent. Rounding down is the trap: four people paying $35 put in $140.00, which is $1.60 short of the total, so the shortfall comes out of the tip and drops the effective rate to about 16.7 percent. The amounts are small in both directions, but only one of them leaves the table safely covered.
Who covers the odd cents when the total will not divide evenly?
Somebody has to, because a fraction of a cent cannot be paid. A $141.60 total across 7 people is $20.2286 each, so either one person absorbs the extra few cents or everyone rounds up to the next dollar and the pot runs slightly over. Both outcomes leave the restaurant paid in full and the server not short, and the difference between them is a matter of cents. Rounding up is the simpler habit because it needs no negotiation and no volunteer.
Can this split a bill by what each person ordered?
No. This tool does an even split, where everyone pays the same share of the bill plus tip, which is the right method when the meals were roughly comparable. For an itemised settle-up, assign each person their own items and then allocate tax and tip in proportion to their share of the subtotal, so someone whose food is 30 percent of the subtotal also pays 30 percent of the tax and 30 percent of the tip. That proportional method is a different calculation and this tool does not model it.
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