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Free tool · acclimatization check

Acclimatization check

Not medical advice. See a travel-medicine doctor.

Enter where you sleep each night, in metres: one night per line, or separated by commas. The check reads sleeping altitude, not the highest point of the day.

The two checks

  1. Above 3000 m, sleep no more than 500 m higher than the night before.
  2. Above 3000 m, take a rest day every 3 to 4 days: a night no higher than the one before. The fourth night in a row above 3000 m that sleeps higher, with no rest between, is flagged.

Where you sleep before the first night on your list, for example the town you start from.

Training for a trek? The free vertical test turns one climb near home into metres per hour →

Kilimanjaro training plan, €49 once

Source

Luks AM, Beidleman BA, Freer L, et al. Wilderness Medical Society Clinical Practice Guidelines for the Prevention, Diagnosis, and Treatment of Acute Altitude Illness: 2024 Update. Wilderness & Environmental Medicine. 2024;35(1 suppl):2S–19S. https://doi.org/10.1016/j.wem.2023.05.013