CalcKitTip Calculator
Your bill
Example: an $80 bill with a 20% tip is $16.00, for a $96.00 total — $24.00 each for 4 people.
Behind the numbers
How tipping math works
Multiply the bill by the tip percent to get the tip, add it to the bill for the total, then divide the total by the number of people to split it evenly. The tip percent applies to the bill amount you enter, so enter the pre-tax subtotal if you want to tip the usual way.
$80 × 20 ÷ 100 = $16.00
$80.00 + $16.00 = $96.00, and $96.00 ÷ 4 = $24.00 each
A few comparisons
Worked examples
| Bill, tip, people | Tip | Total | Per person |
|---|---|---|---|
| $80 bill, 20%, 4 people | $16.00 | $96.00 | $24.00 |
| $50 bill, 15%, 2 people | $7.50 | $57.50 | $28.75 |
| $120 bill, 18%, 3 people | $21.60 | $141.60 | $47.20 |
| $64 bill, 25%, 1 person | $16.00 | $80.00 | $80.00 |
Tips about tipping.
To find 20% of a bill fast, find 10% (move the decimal one place left) and double it: 10% of $80 is $8, so 20% is $16.
15% is the usual floor for sit-down service in the US; 18% to 20% is the norm for good service.
Some restaurants add an automatic gratuity for large parties, often 18% to 20%. Check the bill before tipping twice.
When splitting, round each share up to the nearest dollar and let the extra cover the tip, so nobody owes coins.
Good to know
Your tip questions, answered.
How is the tip calculated?
Tip = bill × tip percent ÷ 100. On an $80 bill at 20%, the tip is $80 × 0.20 = $16.00.
How do I split the bill evenly?
Add the tip to the bill, then divide by the number of people. $80 + $16.00 = $96.00, and $96.00 ÷ 4 = $24.00 each.
What is a good tip percent in the US?
15% is standard for decent service, 18–20% for good service, and 25% for great service. This calculator lets you try each one or type your own percent.
Should I tip on the pre-tax or post-tax amount?
Most people tip on the pre-tax subtotal. If your bill shows tax separately, enter the pre-tax amount for the usual result.