Bill Splitter | Tip & Split
Split a restaurant bill with custom tip percentage and divide equally among any number of people.
What Is the Bill Splitter | Tip & Split?
When a group dines together but orders very different amounts, splitting the bill evenly can feel unfair. The custom mode lets each person enter exactly what they ordered, the calculator then allocates the tip proportionally so everyone pays their fair share of both food and gratuity.
Even vs. Custom Split
- ›Even split: total (bill + tip) divided equally, fast and frictionless
- ›Custom split: each person enters their subtotal; tip is allocated in proportion to their share
- ›Proportional tip: if you ordered 40% of the bill, you pay 40% of the tip
- ›Live running sum shows whether individual amounts add up to the full bill
Why Proportional Tip?
- ›Fair: a person who ordered $15 of salad pays less tip than someone with a $60 steak
- ›Honest: server receives the same total tip regardless of how the group splits it
- ›Clear: each person sees exactly what they owe with no guesswork
Formula
Even Split, Tip
Tip = Bill × (Tip% / 100)
Even Split, Each
Per Person = (Bill + Tip) / N
Custom, Tip Share
Tip_i = (Amount_i / Bill) × Total Tip
Custom, Each Total
Total_i = Amount_i + Tip_i
Implied Tip Rate
(Total − Bill) / Bill × 100
Validation
Σ Amount_i ≈ Bill (within $0.02)
How to Use
- 1Enter the total bill amount (pre-tip) in the Bill field.
- 2Select or enter the tip percentage.
- 3Set the number of people using the − / + buttons.
- 4For an even split: click Split Bill, each person's amount shows immediately.
- 5For a custom split: check "Custom split", enter each person's food/drink subtotal, then click Split Bill.
- 6The summary table shows each person's subtotal, tip share, and final amount to pay.
Example Calculation
3 friends, bill = $120, 18% tip. Alex ordered $60, Blake $40, Casey $20:
Total Tip = $120 × 18% = $21.60
Grand Total = $120 + $21.60 = $141.60
Alex: $60/$120 = 50% → tip = $10.80 → total = $70.80
Blake: $40/$120 = 33% → tip = $7.20 → total = $47.20
Casey: $20/$120 = 17% → tip = $3.60 → total = $23.60
Check: $70.80 + $47.20 + $23.60 = $141.60 ✓
Result
Alex pays $70.80, Blake $47.20, Casey $23.60. Each person's tip is proportional to what they ordered, no rounding debates.
Understanding Bill Splitter | Tip & Split
Common Splitting Scenarios
| Scenario | Bill | Tip % | People | Method | Per Person |
|---|---|---|---|---|---|
| Business lunch | $80 | 20% | 4 | Even | $24.00 |
| Birthday dinner | $240 | 20% | 8 | Even | $36.00 |
| Unequal orders | $150 | 18% | 3 | Custom | Varies |
| Date night | $95 | 20% | 2 | Even | $57.00 |
| Happy hour | $60 | 15% | 6 | Even | $11.50 |
| Fine dining | $300 | 22% | 4 | Even | $91.50 |
| Fast casual | $45 | 10% | 3 | Even | $16.50 |
Frequently Asked Questions
How does proportional tip splitting work?
Each person pays a tip proportional to their share of the bill:
- ›Formula: Tip_i = (Amount_i / Bill) × Total Tip
- ›If you ordered $60 of a $120 bill (50%), you pay 50% of the tip
- ›If total tip is $21.60, your tip share is $10.80
- ›The server receives the same total gratuity regardless of how the group splits
What happens if individual amounts don't add up to the bill?
- ›A live running sum shows the current total of all entered amounts
- ›If the sum differs from the bill by more than $0.02, an error message explains the gap
- ›Small rounding differences ($0.01–0.02) are accepted automatically
- ›Fix: re-check each person's amount, a common mistake is forgetting drinks or a shared appetiser
Is it fairer to split the bill evenly or proportionally?
- ›Even splits are simplest and avoid awkward conversations about who ordered what
- ›Proportional splits are mathematically fair, expensive orders pay more, light orders pay less
- ›For close friends with similar orders, even splitting is preferred for its social smoothness
- ›For mixed groups (e.g. one person had steak and wine, another had a salad), proportional is fairer
Does the calculator handle drinks separately?
- ›Enter each person's complete subtotal: all food + all drinks they ordered
- ›There's no need to separate food from beverages, use the combined total
- ›If someone ordered an expensive bottle of wine, include that in their amount
- ›Shared items (e.g. an appetiser plate): split that amount manually between those who shared it
Can I change someone's name in the split table?
- ›Each person's name field is editable directly in the custom split input
- ›Names appear in the results table so everyone can identify their row
- ›Default names are "Person 1", "Person 2", etc., rename as needed
- ›Names are saved in localStorage so they persist if you reload the page
What if one person is not tipping?
- ›The calculator applies the same tip % to all participants, it cannot set per-person tip rates
- ›Workaround: calculate the tip only for participants who agree, then add the non-tipper separately
- ›Alternatively, the non-tipper pays only their food subtotal and the tippers split the full tip amount
- ›Social dynamics aside, servers depend on tips as a primary income source in the US
How are rounding differences handled?
- ›All amounts are calculated and displayed to the nearest cent ($0.01)
- ›Floating-point arithmetic can produce tiny rounding differences (e.g. $141.599... vs $141.60)
- ›The calculator validates the sum within a $0.02 tolerance to account for these artifacts
- ›If cents don't divide evenly, the last person in the list typically absorbs the penny difference
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