Tip Calculator Guide: How to Calculate & Split Tips
小费计算器指南：如何在不同场景下正确给小费
Tipping can feel awkward — how much is enough? Should you tip before or after tax? How do you split the bill when one friend ordered the steak and the other a salad? This guide walks through the math so you'll never second-guess the bill again.
The Tip Formula
- Bill — the pre-tip amount (subtotal or total)
- Tip% — percentage you choose to tip (as a decimal)
Most people tip on the pre-tax subtotal, but tipping on the total is also common.
Example: on a $48 bill with 18% tip, the tip is 48 × 0.18 = $8.64, bringing the total to $56.64.
Standard Tip Percentages
- 15% — acceptable baseline for adequate service in the US.
- 18–20% — standard for good service at a sit-down restaurant.
- 20%+ — for exceptional service or large groups (many restaurants auto-add 18% for parties of 6+).
- 0% — in many countries (Japan, South Korea, Australia), tipping is uncommon or even impolite.
The 10% "shift the decimal" trick: take 10% of the bill (just move the decimal), then double it for 20% or halve the 10% for 5%.
Splitting the Bill Fairly
The simplest split divides the total evenly — fine if everyone ordered similar items. For fairness, each person's share should be their own items plus their portion of tip and tax. The calculator can split the total evenly across N people, or let you compute per-person totals.
Put It Into Practice
Enter the bill, choose a tip percentage, and optionally split among any number of people.
给小费有时会让人感到尴尬——给多少才够？应该在税前还是税后给？当一个朋友点了牛排另一个点了沙拉时，如何分摊账单？本指南将讲解相关计算方法，让你再也不用在结账时犹豫不决。
小费计算公式
- 账单 — 小费前的金额（小计或总价）
- 小费% — 你选择的小费比例（小数形式）
大多数人按税前小计给小费，但按总价给小费也很常见。
示例：一张 $48 的账单，给 18% 的小费，小费金额为 48 × 0.18 = $8.64，总计 $56.64。
标准小费比例
- 15% — 在美国，服务合格的基本标准。
- 18–20% — 堂食餐厅良好服务的标准比例。
- 20%+ — 对于卓越服务或大型团体（许多餐厅对 6 人以上的团体自动加收 18% 的小费）。
- 0% — 在许多国家（日本、韩国、澳大利亚），给小费不常见甚至被认为是不礼貌的。
10% 的"小数点移动"技巧：取账单的 10%（只需移动小数点），然后加倍得到 20%，或减半得到 5%。
公平分摊账单
最简单的分摊方式是将总价平均分配——如果每个人点的菜品相近，这种方式就很好。为了更公平，每个人的份额应该是各自菜品加上对应的小费和税费部分。计算器可以将总价平均分配给 N 个人，或者让你计算每个人的独立账单。
付诸实践
输入账单金额，选择小费比例，并可选择在任意人数之间分摊。