How much should I tip calculator?
Sophia Vance
Published Jan 09, 2026
People generally tip 15-20% of the bill. To calculate tip multiply the total check by 1 plus the decimal percentage tip you'd like to leave. If you wanted to leave a 20% tip, you would add 1 to 0.20 to get 1.20. Multiply the bill by 1.20 to get the total amount you'd leave including tip.
How much should I tip for $100 dinner?
A Simple Trick to Calculate the TipThis will be a 20% tip amount. For example, on a $100 bill, double the bill in your head – the result is $200. Then move the decimal point one place to the left, which is $20.0. Thus, the tip amount in this example is $20.