THE NUMBERS, EXPLAINED
How to use this calculator.
Profit inputs may be negative and must use the same operating-profit definition. This is an operational metric, not financial-statement guidance.
Start with your inputs
Enter current operating profit (currency), current available room-nights, comparison operating profit (currency), comparison available room-nights. Keep amounts in the units shown on each field. The example is a starting point, not a recommended value.
| Input | Example value |
|---|---|
| Current operating profit (currency) | 3000 |
| Current available room-nights | 100 |
| Comparison operating profit (currency) | 2000 |
| Comparison available room-nights | 80 |
A worked example
With the example inputs above, current profit per available room-night is 30. Change the inputs to explore your own scenario.
| Result | Example answer |
|---|---|
| Current profit per available room-night | 30 |
| Comparison profit per available room-night | 25 |
| Per-room-night variance (currency) | 5 |
How this is calculated
Current profit per available room-night
Divide operating profit by available room-nights.
Comparison profit per available room-night
Apply the same denominator convention to comparison period.
Per-room-night variance (currency)
Compare normalized operating profit.
Symbols and units
- a
- Current operating profit (currency)
- b
- Current available room-nights
- c
- Comparison operating profit (currency)
- d
- Comparison available room-nights
Use the units shown. A list keeps the order in which you enter its values. The symbol ^ means “raised to the power of”.
Assumptions and limits
Profit inputs may be negative and must use the same operating-profit definition. This is an operational metric, not financial-statement guidance.
Calculations use the values you enter. Blank or invalid inputs show an error instead of silently substituting zero. Results are displayed to useful precision; calculations retain the underlying numeric precision.
Questions about this tool
What does the result tell me?
Current profit per available room-night; Comparison profit per available room-night; Per-room-night variance (currency). The result applies to the method and inputs described above. Check the units and assumptions before using it in a decision.
Why might another calculator differ?
Differences in units, rounding, timing or model definitions can produce different answers. Compare the input definitions and the method, rather than only the final number. For this tool: Profit inputs may be negative and must use the same operating-profit definition. This is an operational metric, not financial-statement guidance.
Are my inputs stored or sent to AI?
Calculations on this page happen in your browser. The separate AI question finder sends its submitted conversation to OpenAI; these calculator fields are not sent. Favourites and recent tool names are stored locally. A shared link contains the inputs you choose to include.
Further reading
OpenStax: Describe and Identify Cost Drivers ↗
Background reading; this does not imply endorsement or independent review of SumFizz.
Review status
Software example and browser checks are recorded in our quality report. No external expert review is claimed. Created with coding assistance; calculations run as ordinary browser code.
Read the quality report →