liminfoBill Splitter
Free web tool: Bill Splitter
About Bill Splitter
The Bill Splitter is a straightforward tool that solves one of the most common social calculations: fairly dividing a restaurant bill among a group of people, including an optional tip. Enter the total bill amount, the number of diners, and choose a tip percentage, and the tool instantly calculates the tip amount, the grand total, and the exact amount each person should pay.
Tip selection is made easy with one-click preset buttons for the most common tipping percentages: 0% (no tip), 10%, 15% (standard), 18%, 20% (generous), and 25% (exceptional service). These cover the full range of tipping conventions in North American restaurant culture. The tip amount and grand total update live as you adjust any input, so you can quickly see how different tip levels affect the per-person cost.
All calculations happen entirely in the browser using simple arithmetic: tip amount = total × tip% / 100, grand total = total + tip, per-person amount = grand total ÷ number of people. No data is ever sent to a server. The tool is designed for quick use at the table — mobile-friendly, with large clear number displays that are easy to read in a restaurant environment.
Key Features
- Instant per-person cost calculation from total bill, number of people, and tip percentage
- Six one-click tip presets: 0%, 10%, 15%, 18%, 20%, and 25%
- Live updating results — tip amount, grand total, and per-person amount update as you type
- Clear result display with tip amount, grand total, and per-person amount shown separately
- Per-person amount prominently shown in a large blue card for easy reading at the table
- Mobile-optimized layout for use on smartphones during dinner without zooming or scrolling
- No sign-up, no ads interrupting use, and no internet connection needed after page load
- 100% client-side arithmetic — your bill amount is never transmitted to any server
Frequently Asked Questions
How do I split a bill equally among friends?
Enter the total bill amount in the "Total Bill" field, type the number of people in "Number of People", and select your desired tip percentage. The calculator immediately shows the per-person amount at the bottom in blue. For example, a $120 bill for 4 people with 15% tip gives a grand total of $138, with each person paying $34.50.
How much should I tip at a restaurant?
Standard tipping etiquette in the United States is 15-20% for good service. A common guideline: 10% for poor service, 15% for adequate service, 18-20% for good service, and 25% for exceptional service. In many other countries, tipping is optional or smaller (5-10%). This calculator supports all these ranges with one-click presets.
How is the tip calculated?
Tip amount = Total Bill × Tip Percentage ÷ 100. For example, a $80 bill with 18% tip gives a tip of $80 × 18 ÷ 100 = $14.40. The grand total is the original bill plus the tip ($80 + $14.40 = $94.40), and if there are 3 people, each pays $94.40 ÷ 3 ≈ $31.47.
Should I calculate the tip on the pre-tax or post-tax total?
This is a matter of preference and local convention. In the US, many people calculate the tip on the pre-tax subtotal, while others tip on the total including tax. This calculator uses whatever total amount you enter, so if you enter the pre-tax subtotal, the tip is calculated on that amount. If you enter the post-tax total, the tip is calculated on the full amount.
Can I split a bill unevenly (someone ordered more expensive items)?
This tool calculates an equal split where each person pays the same amount. For uneven splits where individuals pay for their own items, you would need to calculate each person's subtotal separately before using this tool for the tip distribution. For equal splitting at a group dinner, this tool provides the fastest solution.
What is 20% of $100 for tip?
A 20% tip on a $100 bill is $20, making the grand total $120. Split among 2 people, each pays $60. Split among 4 people, each pays $30. You can verify this directly using the calculator: enter 100 for the total, select 20%, and adjust the number of people.
How does the calculator handle decimals and rounding?
All monetary values are displayed to exactly 2 decimal places (e.g., $34.50) to match standard currency formatting. The division is performed using standard floating-point arithmetic, and results are rounded to 2 decimal places for display. In practice, you may need to have one person pay a penny more or less to account for rounding.
Is this calculator useful for splitting costs other than restaurant bills?
Yes, the Bill Splitter works for any shared expense that needs to be divided equally among a group: delivery orders, shared taxi fares, hotel room splits, group gifts, utility bills, or any other cost. Just enter the total amount, set tip to 0% for non-restaurant scenarios, and enter the number of people sharing the cost.