Updated: July 2026
What is the Bill Split Calculator
The Bill Split Calculator is the ideal tool to eliminate confusion when it comes to booking a bar, restaurant or happy hour with friends. Instead of opening the calculator on your cell phone and doing the math in your head to find out the dreaded 10% for the waiter, you fill in a few fields and receive the exact amount that each person must pay, ready to copy and send to the WhatsApp group.
The tool has two modes of use. The first is the Simple Division, ideal for when everyone consumes practically the same thing. The second is Racha Justo, designed to resolve the classic bar argument: why should those who only drank water pay the same price as those who had several draft beers? Both modes already include the service charge in the calculation, so no one needs to do the math at the table.
How to use the Bill Split Calculator
- Choose the Simple Split or Fair Split (Separate Drinks) tab, depending on your case.
- Enter the total value of the order and the waiter fee (10%, 15% or 0%, if you prefer not to include it).
- Enter the total number of people at the table.
- In Racha Justo mode, also inform the total value of drinks or extras and how many people did not consume these items.
- See the result in the command: in simple mode, the final value per person; in Racha Justo mode, how much do those who didn't drink pay and how much do those who did drink pay.
- Use the Copy Command button to paste the summary directly into the WhatsApp group.
How Racha Justo works
At Racha Justo, the calculator separates the food from the drinks. First, she calculates how much food is left over (the total amount minus the cost of drinks) and applies the tip proportionally to each part. Then, divide the cost of the food among all people at the table and divide the cost of the drinks only among those who actually drank. The result is two different bills: one for those who only ate and another, slightly larger, for those who also consumed drinks or extras. It's a simple way to make the division fairer without having to separate orders item by item.