๐ณ Cooking & Baking
Canning Time Calculator
Canning times must be adjusted for altitude because water boils at a lower temperature the higher you go, so food that would be sterilised at sea level may not be higher up. Pressure canning solves this by raising the temperature regardless of altitude, which is why low-acid foods require it.
How it works
Canning method
What you are canning
Jar size
Altitude
Number of jars
Batches the canner holds at once
Base processing time
Altitude adjustment
Total processing time
Pressure setting
Time for all your jars
Batches needed
Safety note
Frequently asked questions
How do I use the Canning Time Calculator?
Fill in the fields above โ the result recalculates instantly as you type. Everything runs in your browser, so the values you enter are never collected or stored.
Is this calculator free?
Yes. It is completely free, requires no account, and works on phones, tablets and desktops.