What Is the Tip & Bill Split Calculator?
This calculator does two jobs at once: it works out a gratuity (tip) on your restaurant or bar bill, then divides the grand total evenly among everyone at the table. Instead of fumbling with mental math after a meal, you get the tip amount, the full total, and exactly how much each person owes — including their share of the tip.
How to Use It
Enter the pre-tip bill amount, choose your tip percentage (15%, 18%, and 20% are common in the US), and type how many people are splitting the check. The result updates with the tip, the total, the amount per person, and each diner's slice of the tip.
The Formula Explained
First the tip is computed as \(\text{tip} = \text{bill} \times (\text{tip\%} \div 100)\). The grand total is \(\text{total} = \text{bill} + \text{tip}\). Finally the per-person share is \(\text{perPerson} = \text{total} \div \text{people}\). Because the total already includes the tip, dividing it evenly gives a fair, all-inclusive amount for everyone.
$$\text{Per Person} = \frac{\text{Bill} \times \left(1 + \dfrac{\text{Tip \%}}{100}\right)}{\text{People}}$$
Worked Example
Suppose the bill is $60, you want to leave an 18% tip, and 2 people are splitting it. The tip is \(60 \times 0.18 = \$10.80\). The total is \(60 + 10.80 = \$70.80\). Split between 2 people, each person pays \(70.80 \div 2 = \$35.40\), of which $5.40 is their share of the tip.
$$\text{Per Person} = \frac{60 \times \left(1 + \dfrac{18}{100}\right)}{2} = \$35.40$$
FAQ
How much should I tip? In the US, 15–20% of the pre-tax bill is standard for sit-down service; many people round up to 18% or 20%.
Should I tip on the tax? Customs vary, but many people tip on the pre-tax amount. This tool applies the percentage to whatever bill figure you enter, so you can use either.
What if the split isn't even? This calculator divides the total equally. For unequal shares (different orders), split by individual item subtotals and apply the same tip percentage to each.
