What is a Tip Calculator?
A tip calculator is a tool that helps you quickly figure out how much gratuity to leave for service workers. Instead of doing mental math at the end of a meal, you enter your bill amount, choose a tip percentage, and instantly see the tip amount and total.
Whether you're dining out, getting a haircut, or ordering delivery, knowing how much to tip can be awkward. Our calculator takes the guesswork out—just enter your bill, select a percentage (or enter a custom amount), and let the math happen automatically.
Restaurant Dining
Calculate 15-20% tips for sit-down meals in seconds
Split Bills Evenly
Divide the total (including tip) among your group fairly
Custom Percentages
Use preset buttons or enter any tip percentage you want
Works Anywhere
Restaurants, delivery, salons, taxis—any tipping situation
Common tipping situations where this calculator helps:
- Restaurants — 15-20% is standard in the US for table service
- Food delivery — $3-5 minimum or 15-20% of your order
- Hair salons — 15-20% for your stylist, plus $2-5 for assistants
- Taxi & rideshare — 10-20% or round up to the nearest dollar
- Bars — $1-2 per drink or 15-20% of tab
How to calculate a tip
Multiply the bill by the tip percentage divided by 100, then add it to the bill. To split, divide the total by the number of people:
Tip = Bill × (tip% ÷ 100)
Total = Bill + Tip
Per person = Total ÷ number of people
Worked example. On a $50 bill at 18%: tip = 50 × (18 ÷ 100) = $9, so the total is 50 + 9 = $59. Split two ways, that's 59 ÷ 2 = $29.50 each.
The same formula works for any currency and any percentage — just plug in your bill and the tip rate you want to leave.
Tip amount at 15%, 18%, 20% and 25%
Use this quick reference to see the tip on common bill sizes at the most-used percentages. Each figure is simply the bill multiplied by the tip rate.
| Bill | 15% | 18% | 20% | 25% |
|---|---|---|---|---|
| $20 | $3.00 | $3.60 | $4.00 | $5.00 |
| $30 | $4.50 | $5.40 | $6.00 | $7.50 |
| $50 | $7.50 | $9.00 | $10.00 | $12.50 |
| $75 | $11.25 | $13.50 | $15.00 | $18.75 |
| $100 | $15.00 | $18.00 | $20.00 | $25.00 |
| $150 | $22.50 | $27.00 | $30.00 | $37.50 |
Values show the tip only — add them to the bill for the total. For a different bill size, multiply the amount by 0.15, 0.18, 0.20 or 0.25.
Tipping Guide by Service Type
Not sure how much to tip? Here's a quick reference guide for common services in the United States. Remember, these are guidelines— adjust based on service quality.
| Service | Standard Tip | Notes |
|---|---|---|
| Restaurant (sit-down) | 15-20% | 20% is the new norm in many cities |
| Buffet | 10% | Less service, but staff still clears plates |
| Food delivery | 15-20% | $3-5 minimum; more for bad weather |
| Bartender | $1-2/drink or 15-20% | $2 for complex cocktails |
| Hair stylist | 15-20% | Plus $2-5 for assistants who wash hair |
| Taxi/Uber/Lyft | 15-20% | Round up for short rides |
| Hotel housekeeping | $2-5/night | Leave daily; different staff each day |
| Valet parking | $2-5 | When they bring your car back |
| Spa/massage | 15-20% | Often included; check first |
| Movers | $20-50/person | More for difficult moves (stairs, long distance) |
Quick Mental Math Tip
To calculate 20% quickly: move the decimal point one place left (that's 10%), then double it. For a $45 bill: $4.50 × 2 = $9 tip. For 15%, just add half of 10% to itself: $4.50 + $2.25 = $6.75.
Should you tip on the pre-tax or post-tax amount?
A tip rewards service, and sales tax goes to the government rather than the server, so tipping on the pre-tax subtotal is technically the most accurate approach. In practice the gap is small, and many people simply tip on the total for convenience.
Example. On a $100 subtotal with 8% sales tax, the bill shows $108. A 20% tip on the pre-tax subtotal is $20; on the post-tax total it's $21.60 — a difference of just $1.60.
If you want to be precise, enter the pre-tax subtotal as your bill amount. Otherwise, tipping on the total is a perfectly reasonable shortcut.
Tipping norms by country
Tipping expectations vary widely around the world. What's standard in one country can be unnecessary — or even impolite — in another. A brief guide:
United States & Canada
15–20% expected at sit-down restaurants; servers rely on tips.
United Kingdom
10–12.5%, often already added as a “service charge.” Check the bill first.
Continental Europe
Rounding up or 5–10% is generous; service is frequently included.
Japan
Tipping is not customary and can be seen as awkward or rude.
Australia & New Zealand
Not expected; a small tip is appreciated for exceptional service.
China
Generally not expected and can cause confusion in local venues.
Customs change over time and by venue, so it's worth checking local practice — and your bill — before you travel.
Frequently Asked Questions
References & methodology
Tip amounts are computed with the standard formula Tip = Bill × (tip% ÷ 100), with the total split evenly as Total ÷ number of people. Tipping percentages and etiquette are guidelines that vary by region and situation; the sources below describe common norms.