CalculateY
Quick Answer
A $120 bill split 4 ways with an 18% tip comes to $35.40 per person, with each person contributing $5.40 toward the $21.60 tip.
Common Examples
| Input | Result |
|---|---|
| $120 bill, 4 people, 18% tip | $35.40 per person |
| $80 bill, 2 people, 20% tip | $48.00 per person |
| $200 bill, 5 people, 15% tip | $46.00 per person |
| $50 bill, 3 people, 0% tip | $16.67 per person |
| $300 bill, 8 people, 20% tip | $45.00 per person |
How It Works
The Formula
Splitting a bill with a tip uses two simple calculations:
Tip Amount = Bill Amount x (Tip Percent / 100)
Total with Tip = Bill Amount + Tip Amount
Per Person = Total with Tip / Number of People
Tip per Person = Tip Amount / Number of People
Where:
- Bill Amount = the pre-tip total on the receipt
- Tip Percent = the percentage of the bill to leave as a tip
- Number of People = how many people are splitting the total
How Tipping Works
In the United States, tipping is customary at sit-down restaurants, with 15% to 20% being the standard range. The tip is calculated on the pre-tax subtotal in some conventions, though many people tip on the full total for simplicity. This calculator applies the tip percentage to the bill amount you enter, so enter whichever subtotal you prefer.
Rounding and Fairness
When splitting a bill, the per-person amount may not divide evenly into whole cents. In practice, one person might pay a cent or two more to cover the difference. This calculator shows the mathematically exact split. For cash payments, rounding up slightly is a common approach.
Why Split Evenly?
Even splitting works well when everyone ordered items of similar value. For groups with large cost differences between individual orders, some people prefer to split based on what each person ordered. This calculator handles the even-split scenario, which is the most common method for simplicity.
Worked Example
For a $120 restaurant bill split among 4 people with an 18% tip: Tip amount = $120 x (18 / 100) = $120 x 0.18 = $21.60. Total with tip = $120 + $21.60 = $141.60. Per person = $141.60 / 4 = $35.40. Tip per person = $21.60 / 4 = $5.40. Each person pays $35.40, which includes $30.00 for their share of the bill and $5.40 for their share of the tip.