What This Calculator Does
This tip calculator works out how much to tip at any custom percentage, adds it to your bill, and optionally splits the total across a group. It is currency-agnostic, so it works for dollars, euros, pounds, yen or any other currency — just enter the numbers. Because tipping customs vary widely by country and venue, the tool lets you set the exact percentage you want rather than locking you into one rule.
How to Use It
Enter the bill amount, choose your tip percentage (for example 10, 15, 18 or 20), and set how many people are sharing the cost. The calculator instantly shows the tip amount, the grand total, and the amount each person pays. Leave the people field at 1 if you are paying alone.
The Formula Explained
The math is simple. The tip is the bill multiplied by the percentage as a decimal: \(\text{tip} = \text{bill} \times \frac{\text{tip\%}}{100}\). The total is just \(\text{bill} + \text{tip}\). To split the bill, divide the total by the number of people: \(\text{per person} = \frac{\text{total}}{\text{people}}\).
$$\text{Per Person} = \frac{\text{Bill} \left(1 + \frac{\text{Tip \%}}{100}\right)}{\text{People}}$$
Worked Example
Suppose the bill is 50 and you want to tip 15% split between 2 people. Tip = \(50 \times 0.15 = 7.50\). Total = \(50 + 7.50 = 57.50\). Per person = \(57.50 \div 2 = 28.75\). Each diner pays 28.75.
$$\text{Per Person} = \frac{50 \left(1 + \frac{15}{100}\right)}{2} = 28.75$$
FAQ
What is a standard tip percentage? In the US, 15–20% of the pre-tax bill is typical for restaurant service. In many European and Asian countries a smaller tip or none at all is expected, as service may be included.
Should I tip on the pre-tax or post-tax amount? Many people tip on the pre-tax subtotal, but tipping on the total is also common and slightly more generous. Enter whichever bill figure you prefer.
How is the split rounded? The per-person figure is shown to two decimals. In practice you may round up to the nearest convenient unit so the total collected covers the bill.
