Tip Calculator & Bill Splitter
Calculate the tip on a pre-tax or post-tax subtotal, split the bill across any party size, and round up to a clean whole-dollar total. Free, currency-agnostic, and 100% in your browser.
Bill Split for Any Party Size
Type any number of people and we divide the total evenly — including tax and tip — with the per-person breakdown shown in real time.
Pre-Tax or Post-Tax Tip Mode
Two conventions are common worldwide: tip on the subtotal alone (more common in the US) or tip on the total including tax (upscale dining). Switch with one click.
Round-Up Option
Round the total up to the nearest whole dollar after the tip. Convenient for cash payment and slightly more generous than the calculated tip — surfaces the effective tip percent so you see what you actually paid.
100% Client-Side
Bill amounts, restaurant choices, and party sizes never leave your browser. No logging, no analytics on the numbers you entered.
Tip Calculator and Bill Splitter: tip, tax, and split in one step
A tip calculator takes a bill subtotal and a tip percent and returns the tip amount and grand total; a bill splitter then divides that total across your party. This tool does both: enter the subtotal, set tax and tip percentages, choose pre-tax or post-tax tipping, optionally round up to a whole dollar, and split across any party size. It runs 100% in your browser, free, with no upload.
How to calculate a tip and split the bill
- Type the bill subtotal — the pre-tax amount before any tip.
- Set the tax percent for your area (US sales tax typically runs 0–10%).
- Choose a tip percent with the slider or a quick button (10, 15, 18, 20, 22, 25).
- Pick the tip base: pre-tax (on the subtotal alone) or post-tax (on subtotal plus tax).
- Toggle round up if you want a clean whole-dollar total for cash payment.
- Enter the party size to see the per-person tax, tip, and total update instantly.
Should you tip pre-tax or post-tax?
Tip on the pre-tax subtotal. The Emily Post Institute recommends 15–20% of the pre-tax total at sit-down restaurants, on the logic that sales tax is a government charge with nothing to do with the quality of service. In practice most diners tip on the post-tax total because it is the larger, last number printed above the tip line. Both land inside the acceptable range, and the gap between them is only the tip rate times the tax — usually 1–2% of the bill.
"Tip 15–20% of the bill, pretax."— The Emily Post Institute, general tipping guide
Under the hood the math is plain. Tax is subtotal × (tax% / 100). The tip base is the subtotal for pre-tax mode, or subtotal + tax for post-tax mode, and the tip is base × (tip% / 100). The grand total is subtotal + tax + tip, and each person pays total / party size. Tipping norms differ sharply by country — see the full list of tipping customs by country for the long version.
Worked examples
$50 subtotal · 20% tip · pre-tax · party of 1
Tip = $50 × 0.20 = $10.00. With no tax, total = $60.00.
$80 subtotal · 8% tax · 18% tip · pre-tax · party of 4
Tax = $6.40, tip = $80 × 0.18 = $14.40, total = $80 + $6.40 + $14.40 = $100.80, or $25.20 per person.
$80 subtotal · 8% tax · 18% tip · post-tax
Tip base is $86.40, so tip = $86.40 × 0.18 = $15.55 — about $1.15 more than the pre-tax tip on the same bill.
Edge case · round-up inflates the effective tip
A $34.22 subtotal with no tax at 18% gives a $6.16 tip and a $40.38 total. Round that up to $50and the spare $9.62 is added entirely to the tip — the effective tip becomes ~46%, not 18%, because the subtotal is fixed and only the tip can absorb the difference. The tool always shows the effective tip percent so a generous round-up never goes unnoticed.
Tipping conventions by region
These are conservative midpoints — real norms vary by city, restaurant type, and service quality. Where the casual column reads "0%" or "round up," an explicit percentage tip is not expected and can read as awkward. When in doubt, round up; in real doubt, ask a local.
| Region | Casual Dining | Upscale Dining |
|---|---|---|
| United States | 15–18% | 18–22% |
| Canada | 15% | 18–20% |
| United Kingdom | 10–12.5% (often included) | 12.5% |
| Ireland | 10% | 10–15% |
| Australia / NZ | 0% (round up) | 10% |
| Germany / Austria | 5–10% (round up) | 10% |
| France / Italy | 5% (service compris) | 5–10% |
| Spain / Portugal | round up | 5–10% |
| Netherlands | round up | 5–10% |
| Japan / China | 0% (refused or rude) | 0% |
| South Korea | 0% | 0% |
| Mexico / Brazil | 10% | 10–15% |
The round-up trap most tip calculators ignore
When the round-up toggle is on, this tool runs Math.ceil(total) and adds the difference straight to the tip — it never touches the subtotal or tax, which are fixed by the receipt. On a bill near a dollar boundary that costs you a few cents. On a bill far below the next round number, it can quietly double or triple your intended tip. That is why the result always reports an effective tip percent: it divides the real tip by the subtotal so you see what you actually gave, not just the percent you picked.
The inputs are clamped to sane ranges: tip percent caps at 200%, tax at 100%, and party size floors at 1 (decimals are floored to whole people). Calculations use ordinary JavaScript numbers, so figures like 12.999999 can appear before the two-decimal display rounds them — fine for restaurant bills, worth knowing for penny-perfect splits.
Runs 100% in your browser
Your bill data never leaves your device. Every figure — subtotal, tax, tip, party size, round-up — is computed locally in JavaScript with no network request, no logging, and no analytics tied to the dollar amounts you enter. I tested this calculator across pre-tax and post-tax modes, party sizes from 1 to large groups, the full slider range, and round-up on and off, checking the effective-tip readout against hand math each time. Restaurant receipts can expose card digits and group composition, so I would not trust any tip tool that needs to "save" your bill to a server.
Frequently asked questions
Is this tip calculator free, and does it run in my browser?
Yes on both. The tip calculator and bill splitter are 100% free with no signup and no usage cap. Every calculation — tip math, bill split, and round-up logic — runs in your browser in JavaScript. No bill amount, party size, or tax figure is ever sent to a server.
Should I tip on the pre-tax or post-tax amount?
Tip on the pre-tax subtotal. The Emily Post Institute recommends 15–20% of the pre-tax total, because sales tax is a government charge that has nothing to do with service quality. Tipping on the post-tax total is also acceptable and is the number most diners use, since it is the larger figure printed above the tip line. The gap between the two is small — usually 1–2% of the bill. This calculator supports both modes and shows the effective tip percent on the subtotal so you always know what you actually paid.
What is the standard tip in the United States?
For sit-down restaurant servers, 15–20% of the pre-tax total is the norm: 15–18% for casual dining and 18–22% for upscale. Bartenders get $1–$2 per drink or 15–20% of the tab. Takeout is increasingly expected to draw 10%, delivery 10–15% with a $3–$5 floor, and rideshare or taxi 15–20%. These are floors, not ceilings — tip more for exceptional service.
How do I split a restaurant bill evenly?
Enter the subtotal, tax percent, and tip percent, then set the party size. This tool divides the grand total — subtotal, tax, and tip combined — by the number of people and shows each person their share. That even split is fair when everyone ordered roughly the same. When orders differ widely, sum each person's own items and add their tax and tip in proportion to their subtotal.
Why does the round-up option change the effective tip percentage?
Rounding up adds the spare cents to the tip, not to the bill. When you round the total up to the nearest whole dollar, the subtotal and tax are fixed, so the extra comes out of the tip. A $42.30 total at 18% tip ($6.16 on a $34.22 subtotal) rounded up to $43 adds $0.70 to the tip — a tiny bump. But rounding that same bill up to $50 turns an 18% tip into roughly a 41% tip. The tool surfaces the effective tip percent so a big round-up never surprises you.
Why is the per-person amount slightly off from total ÷ party size?
JavaScript uses IEEE-754 floating-point math, which can produce values like 12.999999 instead of 13.00. The tool displays two decimal places so the figures look balanced, but the raw number may carry sub-cent rounding fuzz. For penny-perfect splits, take the displayed per-person amount, multiply by party size, then add any leftover cents to one person's share — the classic last-payer adjustment.
How much should I tip in other countries?
It varies sharply. In the US tip 15–20%; in Canada 15–18%; in the UK 10–12.5%, often already on the bill. Across much of France, Italy, and Spain a 5–10% round-up is plenty and "service compris" on the bill means service is already included. In Japan, China, and South Korea tipping is not customary and can be seen as rude. The 12-region reference table on this page lists casual and upscale norms side by side.
What if a service charge is already on the bill?
A printed service charge usually replaces the tip — do not add more. US restaurants commonly apply an automatic gratuity of 18–20% to parties of six or more, and UK venues often add an optional 12.5% service charge. Read the line: if it says service charge or gratuity, that money is the tip. Optional charges can be removed on request if you would rather hand cash to the server directly.
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Tipping customs vary by country and service — treat the split as a guide, not a rule.
Last updated: June 10, 2026 · Runs 100% in your browser — no uploads, nothing leaves your device.
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