Multiply the bill by the tip rate as a decimal. On a 60 dollar bill, 15 percent is 9.00, 18 percent is 10.80, and 20 percent is 12.00. A free tip calculator does the math instantly in your browser and can also split the total across the table.
Free tip calculator. Calculate the tip and split the bill between any number of people. Choose a tip percentage and see per-person totals instantly.
Open Tip Calculator → Free toolFree tip and split calculator. Add a tip, optionally round the total, and split the bill evenly across any number of people for a clean per person amount.
Open Tip and Split Calculator →Ten percent is just the decimal point moved one place: 10 percent of 60 dollars is 6 dollars. From there, 20 percent is double that (12 dollars) and 15 percent is the 10 percent figure plus half of it again (6 + 3 = 9 dollars). For awkward bill amounts the calculator is faster and avoids the rounding argument at the table.
A tip and split calculator adds the tip and divides the total by the number of people in one step. For example, an 85 dollar bill with a 20 percent tip adds 17 dollars for a 102 dollar total, which split four ways is 25.50 each. Everything runs locally in your browser, so it works at the table even on a weak connection once the page is loaded.
17 dollars, bringing the total to 102 dollars. Split four ways that is 25.50 per person.
Take 10 percent by moving the decimal point, then double it for 20 percent or add half of it for 15 percent.
Conventions vary. Many people tip on the pre-tax subtotal; tipping on the full total is simply a little more generous. Either way the calculation is the same multiplication.