Jam Pectin Ratio Calculator
Enter your fruit weight and choose pectin type to get exact pectin and sugar amounts for a perfect set every time.
Your Batch Details
Weight after washing, hulling, and crushing or chopping — not raw whole fruit.
Quick reference
| Pectin type | Packet size | Per 800 g fruit |
|---|---|---|
| Powdered regular | 49 g (1.75 oz) | 1 packet |
| Powdered low-sugar | 49 g (1.75 oz) | 1 packet |
| Liquid regular | 85 ml (3 fl oz) | 1 pouch |
Liquid pectin is stirred in after the rolling boil; powdered pectin is mixed with fruit before heating.
Summary
Enter your fruit weight and choose pectin type to get exact pectin and sugar amounts for a perfect set every time.
How it works
- Enter the weight of prepared fruit (crushed or chopped, after measuring).
- Select your pectin type: powdered regular, powdered low-sugar, or liquid regular.
- Choose your target sugar ratio (standard is roughly equal weight sugar to fruit).
- The calculator outputs the exact pectin amount and recommended sugar for your batch.
- Use the results to scale any recipe up or down while maintaining the correct gel.
Use cases
- Scale a jam recipe up from a single-batch box to a large canning session.
- Switch between powdered and liquid pectin using correct conversion amounts.
- Make low-sugar jam while keeping the set firm enough to hold on a spoon.
- Ensure consistent results across different fruit types and ripeness levels.
- Troubleshoot runny jam before cooking by verifying your pectin-to-fruit ratio.
- Adapt a store-bought pectin box recipe to your specific fruit harvest weight.
Frequently Asked Questions
Last updated: 2026-07-01 ·
Reviewed by Nham Vu