What's a standard tip?

In the US, 15–20% for sit-down service is typical; 18% is a common default.

Should I tip on pre-tax or post-tax?

Either is accepted; most people tip on the pre-tax subtotal.

Optional — 10% is a common gesture.

Many restaurants auto-add 18–20% gratuity for parties of 6+.

Compute the tip on a bill, the grand total, and the per-person share for a group.

All math runs in your browser — nothing is uploadedReviewed & updated: January 1970Methodology

Bill amount

Tip percentage

Number of people

Total

$59.00

Bill$50.00

Tip$9.00

Per person$29.50

Tip = bill · rate. Total = bill + tip. Per person = total / people.

Example

$50 bill, 18% tip, 2 people → tip $9.00, total $59.00, $29.50 each.

What's a standard tip?: In the US, 15–20% for sit-down service is typical; 18% is a common default.
Should I tip on pre-tax or post-tax?: Either is accepted; most people tip on the pre-tax subtotal.
Do I tip on takeout?: Optional — 10% is a common gesture.
What about groups?: Many restaurants auto-add 18–20% gratuity for parties of 6+.