Altitude to Oxygen Chart

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This oxygen to altitude chart extrapolates the amount of oxygen (as a percentage) to real altitude.

At real altitude (in the mountains), the barometric pressure of the atmosphere is much lower than sea-level environments. The result is that oxygen molecules are spread further apart, lowering the oxygen content of each breath. As a result, the reduced availability of oxygen in the air reduces the blood oxygen saturation in the body. As the percentage of oxygen in the body goes down, the body struggles to efficiently deliver oxygen to tissues, muscles and the brain. If you’re interested in altitude as it relates to air pressure, please check out this link:

This is the main reason why people traveling from sea-level often feel symptoms of altitude sickness for the first week upon arriving at higher elevations. This desaturation of oxygen is what leads people to experience Acute Mountain Sickness (AMS), and at its extreme, cerebral and pulmonary edema. To avoid these negative experiences at altitude, we recommend utilizing a “pre-acclimatization” strategy to prepare for high altitude exposure. In an ideal world, we recommend clients utilize all three forms of simulated altitude training — sleeping at altitude, exercising at altitude, and a stationary breathing protocol called Intermittent Hypoxic Breathing

The change in barometric pressure at real altitude is called “hypobaric hypoxia.” At Mile High Training, instead of changing the barometric pressure of an environment, we decrease the oxygen percentage of the air available to replicate the de-saturation that happens at high elevations. Removing oxygen but maintaining normal atmospheric pressure is called “normobaric hypoxia.” By controlling the percentage of oxygen in each breath, users can de-saturate and elicit the adaptations that have been proven to enhance performance and increase acclimatization to altitude. Again, this desaturation of oxygen from the blood and brain is what kicks on the adaptive response in the body, and by incrementally introducing the stimulus, users at sea-level can arrive at real altitude with little to no ill-effects. Our chart will help you find the oxygen levels by elevation for many common altitudes.

Below is an altitude oxygen chart that extrapolates oxygen percentages to real altitude, which you can use in conjunction with our high altitude tents and mask-based training systems. Please feel free to reach out to us for a consultation if you have questions about the true altitude you are simulating. And if you’d like to


Download and save your own copy of the Mile High Training altitude to oxygen chart.

Mile High Training Altitude To Oxygen Chart (.pdf)

Mile High Training Altitude To Oxygen Chart (.jpg)

You can also download the altitude to oxygen chart in an excel format where you can input your current elevation to get the corresponding percentages for your elevation.

Mile High Training Altitude To Oxygen Chart (.xls)

How to acclimate to altitude


The elevation related to the oxygen percentage.

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