Hospitality · Problem-solving calculator
Average Length of Stay Calculator
Calculate average occupied room nights per arriving stay for a hotel reporting period.
- Free to use
- Runs in your browser
- Level B · Industry formula
- Last reviewed 2026-08-17
Calculator guide
What this calculator helps you solve
Calculate average occupied room nights per arriving stay for a hotel reporting period.
Inputs explained
- Occupied room nights — enter the value that applies to your operation or scenario.
- Arriving stays / reservations — enter the value that applies to your operation or scenario.
Formula and methodology
Worked example
3,150 occupied room nights generated by 1,400 arriving stays gives an average length of stay of 2.25 nights.
How to interpret the result
Track ALOS with occupancy, booking window, channel mix, and housekeeping workload. Longer stays can reduce room-turn workload even when occupied room nights remain high.
What to keep in mind
- Use stay arrivals rather than individual guests if you are measuring room-stay length.
- Keep the room-night and arrival data within the same period and reporting definition.
Review approach
This calculator uses deterministic arithmetic and performs the calculation locally in your browser. Its value comes from combining operational inputs into a decision-oriented result rather than returning a one-line conversion.
Review standard: Level B · Industry formula. How calculator reviews work.
Frequently asked questions
What decision can this calculator support?
Track ALOS with occupancy, booking window, channel mix, and housekeeping workload. Longer stays can reduce room-turn workload even when occupied room nights remain high.
How is the result calculated?
Average Length of Stay = Occupied Room Nights ÷ Number of Arriving Stays.
Are the assumptions universal?
No. Operational, regulatory, technical, and industry assumptions vary. Use values that apply to your situation and verify professional or regulatory requirements where relevant.
Does CalculateMeasure store the values I enter?
The calculation runs in your browser and does not require sending the entered calculator values to a server to produce the result.