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Boiling Point at Altitude Calculator
Estimate how elevation affects the boiling point of liquids
Rule of Thumb: Atmospheric pressure drops at higher elevations, which lowers the boiling point. For water, the boiling point drops roughly 1°C for every 285 meters (or 1°F per 500 feet) of elevation above sea level.
Elevation & Liquid Data
Calculation Results
⚠️ This calculator uses a linear approximation ($T_b = T_{b0} - \text{alt} \times 0.0034$) which is reasonably accurate for moderate elevations (up to ~3,000 meters / 10,000 feet). For precise scientific or industrial applications at extreme altitudes, use the Clausius-Clapeyron equation combined with local atmospheric pressure data.