At sea level, water typically boils at 100°C (212°F), use this boiling point of water at altitude calculator to calculate the temperature at which water boils at different elevations.
At an altitude of 5,000 feet (1,524 meters), water boils at approximately 94.9°C (202.8°F). This means that foods may require longer cooking times at higher altitudes to reach the same level of doneness as they would at sea level.
Boiling Point of Water at Altitude Calculator
| Altitude (feet) | Altitude (meters) | Boiling Point (°C) | Boiling Point (°F) |
|---|---|---|---|
| 1,000 | 304.8 | 99.02 | 210.24 |
| 2,000 | 609.6 | 98.04 | 208.47 |
| 3,000 | 914.4 | 97.06 | 206.69 |
| 4,000 | 1,219.2 | 96.08 | 204.92 |
| 5,000 | 1,524 | 95.11 | 203.20 |
| 6,000 | 1,828.8 | 94.13 | 201.55 |
| 7,000 | 2,133.6 | 93.15 | 199.67 |
| 8,000 | 2,438.4 | 92.17 | 197.90 |
| 9,000 | 2,743.2 | 91.19 | 196.12 |
| 10,000 | 3,048 | 90.22 | 194.40 |
| 11,000 | 3,352.8 | 89.24 | 192.63 |
| 12,000 | 3,657.6 | 88.26 | 190.85 |
| 13,000 | 3,962.4 | 87.29 | 189.08 |
| 14,000 | 4,267.2 | 86.31 | 187.30 |
| 15,000 | 4,572 | 85.33 | 185.59 |
| 16,000 | 4,876.8 | 84.35 | 183.82 |
| 17,000 | 5,181.6 | 83.37 | 182.04 |
| 18,000 | 5,486.4 | 82.39 | 180.27 |
| 19,000 | 5,791.2 | 81.41 | 178.49 |
| 20,000 | 6,096 | 80.44 | 176.79 |
| 21,000 | 6,400 | 79.46 | 175.02 |
| 22,000 | 6,705 | 78.48 | 173.24 |
| 23,000 | 7,010 | 77.50 | 171.47 |
| 24,000 | 7,315 | 76.52 | 169.69 |
| 25,000 | 7,620 | 75.54 | 167.92 |
| 26,000 | 7,925 | 74.56 | 166.14 |
| 27,000 | 8,230 | 73.58 | 164.37 |
| 28,000 | 8,535 | 72.60 | 162.59 |
| 29,000 | 8,840 | 71.62 | 160.82 |
| 30,000 | 9,144 | 70.65 | 159.17 |
Boiling Point of Water at Altitude Formula
T = 100 - (E * 0.00321)Where:
- T is the boiling point temperature in °C
- E is the elevation in meters
- 100 represents the boiling point of water at sea level in °C
- 0.00321 is a constant that relates the change in boiling point to elevation
This formula provides a reasonably accurate approximation for elevations up to about 5,000 meters (16,404 feet).
How to Calculate the Boiling Point of Water at Different Altitudes?
To calculate the boiling point of water at various altitudes, follow these steps:
- Determine the elevation of the location in meters.
- Multiply the elevation by the constant 0.00321.
- Subtract the result from 100°C (the boiling point at sea level).
Let’s work through an example:
Suppose we want to find the boiling point of water at an elevation of 2,500 meters.
Elevation = 2,500 meters
2,500 * 0.00321 = 8.025
100 – 8.025 = 91.975°C
At an elevation of 2,500 meters, water boils at approximately 91.975°C (197.555°F).
What is the Boiling Point of Water at an Elevation of 1,000 ft?
1,000 feet ≈ 304.8 meters
Now, let’s apply our formula:
T = 100 - (304.8 * 0.00321)
T = 100 - 0.978
T = 99.022°CAt an elevation of 1,000 feet, water boils at approximately 99.022°C (210.24°F).
What Temperature Does Water Boil at 7,000 Feet?
7,000 feet ≈ 2,133.6 meters
Applying our formula:
T = 100 - (2133.6 * 0.00321)
T = 100 - 6.849
T = 93.151°CAt an elevation of 7,000 feet, water boils at approximately 93.151°C (199.672°F).
What is Boiling Point of Water at 30,000 Feet?
30,000 feet ≈ 9,144 meters
T = 100 - (9144 * 0.00321)
T = 100 - 29.35
T = 70.65°CAt an elevation of 30,000 feet, water boils at approximately 70.65°C (159.17°F).
Sources / References
- Engineering ToolBox: https://www.engineeringtoolbox.com/boiling-points-water-altitude-d_1344.html
- U.S. Geological Survey: https://www.usgs.gov/special-topics/water-science-school/science/water-density
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