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Calcimator

Altitude Canning Adjustment Calculator

Calculate altitude adjustments for water-bath and pressure canning processing times and PSI.

Inputs

min
ft

Results

Adjusted Processing Time

40 min

Required PSI

0 PSI

Time Added20 min
PSI Added0 PSI
Altitude Above Baseline4,000 ft
How to Use This Calculator
  1. Enter the base processing time from your tested canning recipe at sea level.
  2. Enter your altitude in feet above sea level.
  3. Select your canning method (boiling water bath or pressure canning).
  4. The calculator shows the adjusted processing time and required PSI, plus adjustments added for altitude.
  5. Use the adjusted time and PSI for every batch to ensure safe preservation at your elevation.
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