Everyday life
Uneven bill split Calculator
Split a bill by consumption weights with cent-exact allocation. This free uneven bill split calculator shows the calculation and its assumptions so you can compare your own figures.
Calculated on your device
Your results
Total Bill€193.50
Split a bill by consumption weights with cent-exact allocation.
Added Tip€8.50
Allocations · 4 rows
| Person | Weight | Amount Due |
|---|---|---|
| 1 | 1 | €48.38 |
| 2 | 1 | €48.37 |
| 3 | 1.5 | €72.56 |
| 4 | 0.5 | €24.19 |
Assumptions and estimates
- Weights represent each person's consumption or agreed share. Existing service is included in the bill and excluded from the extra-tip base. Largest-remainder cent allocation makes the rounded shares equal the rounded total.
- Method: Allocate the rounded bill using largest remainders so all rounded shares sum to the total.
- Existing service charge is included in the bill and excluded from the added-tip base.
Useful next steps
- Use Compare options to test an alternative side by side.
- Copy, print or download a record of this calculation when you need one.
Reports open your email app addressed to s@s1.ie with the public page address only. Your inputs are never added.
How the uneven bill split calculation works
Allocate the rounded bill using largest remainders so all rounded shares sum to the total.
Existing service charge is included in the bill and excluded from the added-tip base.
Using this calculator
- Enter your own figures in the labelled inputs. Keep the currencies, units and time periods consistent.
- Choose any applicable rate profile, pattern or assumption shown for this tool. Open additional inputs when relevant.
- Review total bill and added tip, then read the stated assumptions and eligibility conditions before using the result.
Worked example
This is a static example using illustrative inputs, not facts about you or today’s date. The displayed eligibility selections and assumptions apply only to this example.
See example inputs
- Bill including existing service (€)
- 185
- Additional tip (%)
- 5
- Each person’s relative share
- 1, 1, 1.5, 0.5
- Service already inside bill (€)
- 15
- Total Bill
- €193.50
- Added Tip
- €8.50
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