Tip Calculator
Enter the bill, choose a tip percentage or type a flat tip, and see the tip, the total and what each person owes. Calculations run in whole cents, so the shares always add up to the exact total.
Last updated November 4, 2026
0 up to 10,000,000. Rounded to the cent.
Whole number, 1 to 100.
Result
Total $101.40
| Item | Amount |
|---|---|
| Bill | $84.50 |
| Tip | $16.90 |
| Total | $101.40 |
Show the work
Formula: tip = bill × percent ÷ 100; total = bill + tip; each pays total ÷ people in whole cents
- You entered a bill of $84.50 and a 20% tip, split between 1 person.
- Tip: 8450 cents × 20% = $16.90, rounded to the nearest cent.
- Total: $84.50 + $16.90 = $101.40 (10140 cents).
Result: Total $101.40
How a tip is calculated
tip = bill × percent ÷ 100
total = bill + tip
each person pays total ÷ people, in whole cents
A percentage tip is a share of the bill before the tip. Multiply the bill by the percentage and divide by 100. A 20 percent tip on $84.50 is $84.50 × 20 ÷ 100 = $16.90, so the total is $101.40.
With a flat tip you skip the percentage and type the amount yourself. The calculator then works backwards and shows the effective tip percent, which is the tip divided by the bill times 100. A $10 tip on an $84.50 bill is 11.83 percent.
Money is handled in whole cents. The bill is rounded to the nearest cent on entry, and a percentage tip is rounded to the nearest cent, with exact halves rounded up. A 15 percent tip on $84.50 is exactly 1,267.5 cents, which becomes 1,268 cents, or $12.68.
See how we calculate for the formulas, sources and review schedule behind every calculator.
Also useful alongside this calculator: Percentage Calculator.
How splitting and leftover cents work
When several people share the bill, the total in cents is divided by the number of people using whole-number division. Everyone pays the rounded-down share, and the leftover cents are covered one cent at a time by the first people in the group.
For example, a $47.23 bill with an 18 percent tip comes to $55.73, or 5,573 cents. Divided among 4 people that is 1,393 cents each with 1 cent left over. One person pays $13.94 and the other three pay $13.93, and the four shares add up to exactly $55.73.
The tip per person is the tip divided by the number of people, rounded to the nearest cent. It is shown for information only. The total per person is the amount each person should actually hand over.
Choosing a tip percentage
The presets cover the rates most often used for table service in the United States: 15, 18, 20 and 25 percent. Custom percent accepts anything from 0 to 100, including hundredths such as 18.5.
Customs differ by country, venue and service style, so treat the presets as starting points rather than rules. Some restaurants add a service charge or an automatic gratuity for large parties. Check the bill first so you do not tip twice.
This calculator applies the percentage to the amount you type. If you want the tip on the pre-tax amount, enter the pre-tax subtotal. If you tip on the amount including tax, enter the full bill.
Limits and edge cases
The bill can be 0 up to 10,000,000, the tip percent 0 to 100, and the group 1 to 100 people. Anything outside those ranges shows a message instead of a result.
With a bill of 0 the tip is 0 and the effective percent is not defined, so it is left out. Currency is shown in US dollars, but the arithmetic is the same for any currency with 100 subunits.
How to use the Tip Calculator
- Type the bill amount before the tip.
- Choose 15, 18, 20 or 25 percent, or pick Custom percent or Custom amount and enter your own tip.
- Enter how many people are sharing the bill.
- Read the tip, total, per-person tip and per-person total, including which shares carry an extra cent.
- Open Show the work for each step, or use Copy, Print or Share.
Worked example
A dinner bill is $84.50. At 20 percent the tip is $16.90 and the total is $101.40. Split four ways, each person pays $25.35 with no leftover cents.
| Tip percent | Tip | Total | Each of 4 people |
|---|---|---|---|
| 15% | $12.68 | $97.18 | 2 pay $24.30, 2 pay $24.29 |
| 18% | $15.21 | $99.71 | 3 pay $24.93, 1 pays $24.92 |
| 20% | $16.90 | $101.40 | $25.35 |
| 25% | $21.13 | $105.63 | 3 pay $26.41, 1 pays $26.40 |
Frequently asked questions
How do I calculate a 20 percent tip quickly?
Move the decimal point one place left to get 10 percent, then double it. For an $84.50 bill, 10 percent is $8.45 and 20 percent is $16.90.
Should I tip on the amount before or after tax?
Both are common. Tipping on the pre-tax subtotal gives a slightly lower tip. Enter whichever amount you want the percentage applied to.
What happens when the bill does not divide evenly?
The total is divided in whole cents. Everyone pays the rounded-down share, and the leftover cents are added one each to the first people, so the shares sum to the exact total.
What is the effective tip percent?
It is the flat tip divided by the bill, times 100. It lets you see what percentage a round amount such as $10 really represents on your bill.
Can I use this tip calculator for other currencies?
The arithmetic works for any currency with 100 subunits, but results display with a dollar sign. Ignore the symbol and read the digits.