ALOS - Average Length of Stay

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Term Definition
ALOS - Average Length of Stay

What is the meaning / definition of Average Length of Stay in the hospitality industry?

ALOS stands for Average Length of Stay. It is the average amount of days guests stay at the hotel during a particular period.

Formula:

Average Length of Stay (ALOS) = Number of roomnights / Number of bookings

How to calculate:

Step 1

  • Length of stay = date of discharge - date of admission
  • LOS of Guest A = [(4-4-2013) - (10-4-2013)] = 6
  • LOS of Guest B = [(2-4-2013) - (13-4-2013)] = 11
  • LOS of Guest C = [(15-4-2013) - (20-4-2013)] = 5
  • LOS of Guest D = [(22-4-2013) - (30-4-2013)] = 8

Step 2

  • Total Length of stay: 6 + 11 + 5 + 8 = 30 days

Step 3:

  • Average Length of Stay: Total length of stay / Total number of reservations
  • 30 / 4 = 7,5 days

Alos can vary a lot. A typical hotel in Amsterdam city center has an ALOS of 1,8 while a Resort located in Bali can have a Alos of 8,5.

 

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