🍽️ Restaurant Tip Calculator
Enter your bill amount, desired tip percentage, and number of people splitting to see the tip, total, and per-person amount.
What the three boxes do
The tip is a straight percentage of the bill figure you type, and the split divides the total after the tip:
tip = bill × (tip % / 100)
total = bill + tip
per person = total / number of peopleAt the loaded values - $100, 20%, one person - the tip is $20.00 and the total $120.00. Set the party to seven and each pays $17.14; seven times $17.14 is $119.98, so someone covers the missing two cents.
Tax: this tool tips on whatever you enter
There is no separate tax field, so the number in the bill box decides the question. Type the pre-tax subtotal and you tip on food and drink only; type the amount at the bottom of the check and you tip on the tax as well.
On a $100 subtotal with 8.875% sales tax, the check reads $108.88. Twenty percent of the subtotal is $20.00; twenty percent of the taxed total is $21.78. The gap is $1.78 - small on one dinner, and the single most common reason two people at the same table work out different totals.
For mental math, move the decimal one place left for 10%, double it for 20%, or add half again for 15%. On an $86.40 check: $8.64, $17.28, $12.96.
Frequently asked questions
Are you supposed to tip on tax?
The convention is to tip on the pre-tax subtotal, since sales tax goes to the state rather than the restaurant. Plenty of people tip on the total because it is quicker, and on a $100 dinner at 8.875% tax the choice is worth $1.78.
How much is a 20% tip on $50?
$10, giving a $60 total. Ten percent of $50 is $5, and 20% is twice that. At 15% the tip is $7.50 and at 18% it is $9.
Why do the per-person amounts not add back to the total?
Rounding. A total that will not divide evenly is cut to the cent per person, so the shares can land a cent or two short. One person covers the difference, or everyone rounds up.