Cooking Altitude Adjustment Calculator

At higher altitudes, air pressure is lower, which causes water to boil at a lower temperature and leavening gases to expand faster. This can cause baked goods to rise too quickly and then collapse, and foods may dry out faster.

Start making adjustments at 3,000 feet above sea level. The higher the altitude, the more significant the adjustments needed.

Increase oven temperature by 15-25°F, increase liquid by 10-25%, reduce sugar by 5-20%, reduce leavening by 12-50%, and reduce baking time by 5-20%. Exact amounts depend on altitude.