Free Tip & Percentage Calculator
Calculate restaurant tips, split the bill, or find any percentage of a number — fast, private, and built for everyday US use.
Tip & split
Percentage of a number
Useful for discounts, sales tax estimates, commission checks, and “what is X% of Y” questions.
Tip calculator and percentage math in one place
Tip calculators and percentage tools are classic high-volume utilities. People search for them before paying a restaurant bill, splitting costs after a trip, or checking a discount. IrisTecq includes this calculator alongside business document tools so the site serves both paperwork and everyday math — supporting AdSense traffic while staying problem-oriented.
Default tip suggestions in the US often fall around 15–20% for sit-down service, but customs vary by city and service type. This calculator does not decide etiquette for you; it simply multiplies the bill by your chosen percentage and optionally divides the total among your party.
- Use the tip section for meals and delivery fees.
- Use percentage-of for discounts, tax estimates, or commission previews.
- All math stays in your browser — nothing is uploaded.
Running a small business dinner as a client expense? Capture it later on your profit and loss statement or issue a formal receipt if you are the merchant.
Calculator FAQ
Should tip be calculated before or after tax?
Preferences vary. Many people tip on the pre-tax subtotal; others use the final bill. Enter whichever amount your group agrees on.
Can I calculate sales tax here?
Enter the taxable amount as the “number” and your tax rate as the percent. Always confirm official rates for your location.
Is this a unit converter?
Not yet. This page focuses on tip and percentage math. Unit conversion may be added later as a separate utility.