This tip calculator takes a bill amount, a tip percent, and a number of people. It multiplies the bill by the tip rate, adds that tip to the bill, and divides the total by the number of people. The headline is one person's equal share of bill plus tip.
The form does not know whether your bill is pre-tax or post-tax, and it does not know the local custom. In the United States a restaurant tip of 15% to 20% of the pre-tax or post-tax bill is a common range, and some bills already include a service charge. Other countries expect little or no extra tip. Type the percent you intend to leave. The calculator will not pick one.
How to use this calculator
- Enter the bill amount in US dollars, before the tip.
- Enter the tip percent. For 18%, type 18.
- Enter how many people are splitting the total. Use 1 if you are not splitting.
- Press Calculate. The headline is the equal share. Tip and total bill appear underneath.
How the tip and the split are calculated
Tip equals bill times tip percent divided by 100. Total equals bill plus tip. Each person's share equals that total divided by the number of people. There is no tax field. If you want to tip on the pre-tax subtotal, enter the subtotal as the bill. If you want to tip on the amount after tax, enter that larger amount instead.
Every displayed dollar amount is rounded to the cent on its own. The rounded tip plus the bill usually matches the rounded total, but the rounded per-person shares multiplied by the number of people can be a cent away from the rounded total. That is ordinary money rounding, not a missing cent in the formula.
The split is equal. The calculator cannot give one person a different share, remove someone who did not eat, or add a fixed dollar tip instead of a percent. A 0% tip is allowed and produces a tip of $0.00.
Formula
Tip = bill × tip percent / 100 Total = bill + tip Share per person = total / number of people Each dollar amount is rounded to the cent for display.
The number of people must be at least 1. Dividing by zero people is undefined. Fractions of a person are not a meaningful split even though a numeric field will accept them.
A tip percent above 100 is mathematically allowed and is rarely what a diner means. A tip of 0 is a real choice and calculates cleanly.
Worked tip and split examples
$85 bill, 18% tip, two people
Tip = 85 × 18 / 100 = 15.30. Total = 85 + 15.30 = 100.30. Share = 100.30 / 2 = 50.15. The calculator shows $50.15 per person, a tip of $15.30, and a total bill of $100.30.
These particular amounts add back exactly: two times $50.15 is $100.30, and $85.00 plus $15.30 is $100.30. Not every bill is that tidy. The next example is not.
A 20% tip that does not split to the cent
Bill $64.27, tip 20%, three people. Raw tip = 64.27 × 0.20 = 12.854, which displays as $12.85. Raw total = 77.124, which displays as $77.12. Raw share = 77.124 / 3 = 25.708, which displays as $25.71 per person.
Three times the displayed share is $77.13, one cent more than the displayed total of $77.12. If you are settling cash, someone has to absorb that cent. The formula did not lose it. The screen rounded each line separately.
A four-person 15% tip, and no tip at all
Bill $120, tip 15%, four people. Tip = 18, total = 138, share = 34.50. The calculator shows $34.50 per person, a tip of $18.00, and a total bill of $138.00. Four times $34.50 is $138.00 exactly.
Bill $42, tip 0%, one person. The calculator shows $42.00 per person, a tip of $0.00, and a total bill of $42.00. Use a zero when you mean no tip. Leaving the percent at the sample 18 would add a tip you did not intend.
Tip rates on an $85 bill split two ways
| Tip percent | Tip | Total | Each of 2 people |
|---|---|---|---|
| 15% | $12.75 | $97.75 | $48.88 |
| 18% | $15.30 | $100.30 | $50.15 |
| 20% | $17.00 | $102.00 | $51.00 |
| 25% | $21.25 | $106.25 | $53.13 |
What the tip split does not handle
Service charges, auto-gratuities, and couvert fees that are already on the bill should not be tipped again unless you mean to. The calculator cannot see the printed check. If a 18% service charge is already included, entering 18 again doubles that idea.
Unequal splits, itemized shares, and "I only had a salad" are not supported. Compute those shares outside the form, or enter one person's own subtotal as the bill and set people to 1.
Currency display is US dollars. The percent math is the same in another currency, but the symbols will still say $. Rounding to the cent matches US coinage and may not match a currency with a different minor unit.
Frequently asked questions
Should I tip on the pre-tax or post-tax amount?
The calculator uses whatever bill amount you type. Enter the pre-tax subtotal to tip on that, or enter the after-tax total to tip on that. It does not add tax itself, and it has no way to know which base your table prefers.
Why can the per-person shares miss the total by one cent?
Each of the tip, the total, and the share is rounded to the cent separately. On a $64.27 bill with a 20% tip split three ways, the share displays as $25.71 and three times that is $77.13, while the total displays as $77.12. The extra cent is rounding, not a different tip rate.
What tip percentage should I enter?
Type the percent you want to leave. A common US restaurant range is 15% to 20%, and the sample value is 18. Some checks already include a service charge, and some places expect no tip. The form does not choose a custom for you.
Can the tip be zero?
Yes. Enter 0 for the tip percent. A $42 bill with a 0% tip and one person shows a $0.00 tip and a $42.00 share. Do not leave the sample 18 in the field if you mean to add nothing.
Can each person pay a different amount?
No. The total of bill plus tip is divided into equal shares. For an unequal split, run the calculator with one person on that person's own portion of the bill, or split the dollars outside this form.