Pressure Canning Altitude PSI & Processing Time Calculator
Calculate USDA-compliant pressure canning processing times, jar headspace, and altitude pressure adjustments for weighted and dial gauges across low-acid meats, vegetables, broth, and beans to safely destroy Clostridium botulinum.
Food Product & Elevation
Feet
Water boils cooler at higher elevations, requiring higher PSI.
Required Processing Pressure
USDA 240°F BOTULINUM SAFE
12 PSI
Dial Gauge at 2,500 ft elevation (2,001–4,000 ft bracket)
Process Time at Pressure
25 Minutes
Timer starts ONLY when target PSI is reached
Jar Headspace
1.0 Inch
Essential for proper vacuum seal
USDA Canning Protocol Checklist
Mandatory Steam Venting:
Vent steam 10 full minutes
Target Internal Temperature:
240°F (116°C)
Natural Pressure Depressurization:
Cool naturally to 0 PSI (never force-cool)