How it works
To calculate a tip, multiply the bill by the tip percentage: Tip = Bill × Tip% / 100. Then divide the total (bill + tip) by the number of people to split it evenly.
In the US, 15–20% is a typical restaurant tip, with 18–20% common for good service. Customs vary widely by country — in many European countries rounding up or leaving 5–10% is normal.