PDFora Guide · 5 min read
How to Calculate a Tip: 15%, 18% & 20% Examples
To calculate a tip, multiply the amount you want to tip on by the tip percentage, then add the tip to the bill. If a group is sharing equally, divide the final total by the number of people. Always check the receipt first because tax, service charges and local tipping customs vary.
Published by PDFora · Last updated November 12, 2026
Tip calculator formula
Tip amount = tip base × tip percentage ÷ 100. Final total = bill amount + tip. Equal share per person = final total ÷ number of people. The tip base is the amount you choose to apply the percentage to; it may be the pre-tax subtotal or another receipt amount depending on local practice.
For a bill of 2,000 with a 10% tip, the tip is 200 and the total is 2,200. If four people split that total equally, each person pays 550. The calculator keeps the currency you enter and does not convert it.
15%, 18% and 20% tip examples
For a $60 bill, a 15% tip is $9, an 18% tip is $10.80, and a 20% tip is $12. The corresponding totals are $69, $70.80 and $72. If three people split each total equally, they pay $23, $23.60 or $24 per person. These are arithmetic examples, not universal tipping rules; customary amounts differ by country, venue and service.
To calculate any percentage, convert it to a decimal or divide by 100. For example, $60 × 18 ÷ 100 = $10.80. You can enter 15, 18 or 20 in the calculator, or use another percentage that fits your situation.
Calculate the tip and split the bill
Enter the bill amount, type the percentage as a number such as 18 for 18%, and enter the number of people sharing equally. Run the Tip Calculator and review the tip amount, final total and per-person share.
An equal split is only appropriate when everyone agrees to share the full amount evenly. If people ordered different items, calculate each person's food and drink share separately before allocating any shared tax, service charge or tip.
Check service charges and tax
Read the receipt before adding a tip. Some restaurants already include a service charge, gratuity or other fee. Adding another percentage without checking can mean paying twice for the same purpose. Local customs and restaurant policies differ, so the calculator does not recommend a universal tip rate.
If you intend to tip on the pre-tax amount, use the subtotal before tax. If you prefer to tip on the full receipt amount, use that amount. The calculator follows the number you enter and does not detect or remove tax or service charges automatically.
Rounding and payment
The exact per-person amount may include cents or paisa. Agree how to handle rounding before paying, especially when a bill is split between several people. Check the final receipt and payment amount before completing the transaction.
The calculator is an arithmetic aid, not a payment service. It does not process a payment, convert currencies or determine what is customary in your location.
Frequently asked questions
How do I calculate an 18% tip?
Multiply the tip base by 18 and divide by 100. On a $60 tip base, 18% is $10.80.
How do I calculate a 20% tip?
Multiply the tip base by 0.20. For a $60 bill, a 20% tip is $12 before adding it to the bill.
How do I split a bill including tip?
Add the tip to the bill, then divide the final total by the number of people sharing equally. A $70.80 total split three ways is $23.60 each.
Should I tip on the bill before or after tax?
It depends on local practice and your preference. Use the pre-tax subtotal if that is the amount you intend to tip on, or the tax-inclusive total if that is your chosen basis.
What if a service charge is already included?
Check the receipt and restaurant policy before adding another tip. The calculator does not detect or remove service charges automatically.
Try a related tool
Continue with a related PDFora utility when you are ready to put this guide into practice.
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