Tip & Bill Split

Step by step

1. Type the bill amount exactly as printed on the check, and how many people are splitting it.
2. Pick a tip with the preset buttons or drag the slider for anything in between — 17.5% is a perfectly good answer.
3. If the bill already includes sales tax and you would rather tip on the food, switch Sales tax to “tip on the pre-tax amount” and enter your local rate.
4. Choose how you want the rounding handled — exact to the cent, or rounded up so the total is a clean number.
5. Read the per-person amounts at the bottom, then use Copy the summary to paste it into the group chat.

Good to know

• In the United States, tipping on the pre-tax amount is the traditional convention; tipping on the post-tax total is common now and costs a little more. This calculator does either and tells you which it used.
• Watch for a service charge or “gratuity included” line on the bill, common for larger tables. If it is there, the tip is already paid.
• Rounding each person up to the next whole is the friendliest option for cash — nobody hunts for coins and the extra goes to the server.
• The effective tip figure shows what your rounding actually turned the tip into. Rounding up a small bill can quietly turn 18% into 23%.
• For a bill in a currency without cents, set rounding to “round the total to the nearest whole”.

The maths behind it

• Tip tip = base × percent ÷ 100 Base is the whole bill, or the pre-tax amount when that option is chosen.
• Backing tax out pre-tax = bill ÷ (1 + tax ÷ 100) You cannot simply subtract the tax percent — the tax was added to a smaller number than the total.
• Even split each = total ÷ people Cents that will not divide are handed to one person rather than silently lost.
• Effective tip effective % = (total paid − bill) ÷ bill × 100 What the tip became after rounding.