Free Tip Calculator
Split any bill in seconds — no signup, works offline.
A tip calculator is a free online tool that instantly computes the gratuity amount for any restaurant bill. Enter your total, pick a tip percentage, and get the exact tip amount, grand total, and per-person split in under a second — no mental math required.
What makes this tool different: Most tip calculators only split bills evenly. CalcInstant's tip calculator supports pre-tax vs post-tax tipping with a custom tax rate, rounded tip/total options, favorite percentage presets, and uneven bill splitting — all updating in real time as you type.
How the tip calculator works
The tip calculator multiplies your bill subtotal by the tip percentage to find the gratuity. It then adds the tip to your bill to produce the grand total. When you enter multiple people, it divides both the tip and the total by the number of guests to show exactly what each person owes. All arithmetic happens instantly in your browser — no data leaves your device.
For example: a $85 dinner bill with an 18% tip produces an $15.30 tip and a $100.30 grand total. Split four ways, that's $25.08 per person — including $3.83 tip each.
The calculator also offers a pre-tax mode, which is useful when you want to tip based on the food and drink subtotal before sales tax. Toggle between post-tax (total bill) and pre-tax (subtotal) to see how the difference affects the gratuity. A "round up" option lets you round the tip or total to the nearest dollar for easier payment when splitting in cash. If you frequently tip the same percentages, star your favorites and they stay saved for next time.
When to use a tip calculator
Use a tip calculator any time you're splitting a restaurant bill, paying for food delivery, tipping a hotel porter, or handling any service where gratuity is expected. It's especially helpful at group dinners where the bill gets complex — the calculator eliminates arguments about who owes what. Business lunches with colleagues, birthday dinners with friends, and large family gatherings all benefit from an instant, fair per-person breakdown.
The free tip calculator on CalcInstant also works for any service industry tipping scenario: hair salons, spas, taxi and rideshare drivers, hotel housekeeping, tour guides, and movers. Just enter the service total and your preferred percentage. For bar service and bartenders, $1–2 per drink or 15–20% of the tab is standard. At wedding receptions or catered events where gratuity is included in the contract, use the calculator to verify the 18–20% service charge is correct before paying extra.
Travelers visiting the US from countries without a tipping culture often find the calculator especially useful — it removes the guesswork and helps budget accurately for gratuities across an entire trip. Similarly, international travelers from the US can use it to calculate appropriate tips abroad while accounting for local customs and exchange rates.
Tip percentage guide
US tipping norms vary by service type. For sit-down restaurants, 15-20% is standard; 20-25% for exceptional service. Food delivery typically warrants 15-20% of the order total. Taxi and rideshare: 15-20%. Hair stylists and barbers: 15-25%. Hotel housekeeping: $2-5 per night. Valet parking: $2-5 when retrieving your car. Tour guides: $10-20 per person per day for full-day tours, half that for half-day. Movers: $20-50 per mover depending on the complexity of the move.
When in doubt, 20% is a safe default at most US restaurants. It's easy to calculate mentally (find 10%, double it) and it's become the new standard tip in most cities. Large groups should check whether the restaurant automatically includes a "gratuity" line item (typically 18% for parties of 6 or more) — if so, the calculator can verify that the listed amount is indeed 18% of the pre-tax subtotal. Some restaurants add gratuity but still leave a tip line, so knowing what you have already paid helps avoid double-tipping.
Frequently asked questions
How do I calculate a 20% tip on a restaurant bill?
Move the decimal point one place left to get 10% of your bill, then double that number to get 20%. For a $45 bill: 10% = $4.50, doubled = $9.00 tip. Add $9.00 to $45.00 for a $54.00 grand total. The calculator does this instantly for any percentage.
Should I tip on the pre-tax or post-tax amount?
Tip on the pre-tax subtotal — that's what etiquette guides recommend. However, most people tip on the post-tax total for convenience since the difference is small. On a $50 pre-tax bill with 8% tax, tipping 20% on pre-tax saves you about $0.80 compared to tipping on the full $54 total.
How do I split a bill and tip between 4 people?
Add the tip to the total bill first, then divide by the number of people. For a $120 bill with 20% tip: $120 × 1.20 = $144 total ÷ 4 people = $36 each. Enter the bill, tip percentage, and party size into the calculator and it shows the per-person amount automatically.
What is a standard tip percentage at restaurants in the US?
15% is the historical minimum, 18% is now considered average, and 20% has become the new standard at sit-down restaurants. For exceptional service, 25% is appropriate. Fast casual and counter service typically expect 10–15%. Food delivery drivers: 15–20% of the order total, minimum $3–5.
How much should I tip a delivery driver?
Tip delivery drivers 15–20% of the order total, with a minimum of $3–5 for small orders. For orders under $20, tip at least $4 regardless of percentage. Bad weather, difficult delivery locations, or large orders justify tipping on the higher end. Always tip in cash when possible — apps sometimes keep a portion.
How do I calculate tip when splitting a bill unevenly?
Calculate the tip percentage on the full bill first, then apply that same percentage to each person's individual portion. If the tip rate is 20% and you owe $32 of a larger bill, your tip share is $6.40. This is fairer than splitting the total tip evenly when people ordered different amounts.