Canning Calculator
Calculate how many jars you need for your canning recipe based on yield and jar size.
Plan your home canning projects.
Jars Needed
Canning jar calculation helps you prepare the right number of jars for your recipe.
Formula:
Jars needed = Recipe yield (cups or liters) / Jar capacity
Standard jar sizes (US):
| Jar Size | Volume | Best For |
|---|---|---|
| 4 oz (quarter pint) | 118 mL | Jams, jellies, samples |
| 8 oz (half pint) | 237 mL | Jams, salsas, relishes |
| 12 oz (three-quarter pint) | 355 mL | Syrups, sauces |
| 16 oz (pint) | 473 mL | Fruits, pickles, sauces |
| 24 oz (pint and a half) | 710 mL | Fruits, juices |
| 32 oz (quart) | 946 mL | Vegetables, soups, stocks |
| 64 oz (half gallon) | 1893 mL | Juices (only for specific recipes) |
Common yields per batch:
- Jam/jelly: 6–8 half-pint jars per batch
- Tomato sauce: 7 quarts per bushel of tomatoes
- Pickles: 7–9 pints per 4 lbs cucumbers
- Salsa: 6 pints per batch
Always prepare extra jars — it is better to have 1–2 more jars ready than to run short mid-process. Add 10–15% extra.
Safety: Follow USDA guidelines for processing times and methods. Use tested recipes from trusted sources.