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Pectin Ratio Calculator

Calculate pectin dosage by fruit type, sugar ratio, and batch size for jams, jellies, and preserves.

Inputs

Pectin content varies by fruit — high-pectin fruits need less added pectin

g
g

Disable to rely on natural fruit pectin only (high-pectin fruits only)

Low-sugar pectin gels with calcium instead of high sugar, requires ~30% more pectin

Results

Pectin Required

10.0 g

Sugar-to-Fruit Ratio

0.75:1

Lemon Juice33 ml
Expected Set StrengthFirm set

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Tips

1
High-pectin fruits (apples, citrus, cranberries) may not need added pectin at all.
2
Low-sugar recipes need special low-methoxyl pectin that gels with calcium instead of sugar.

Open formula

Pectin (g) = Fruit Weight × Dosage Rate
Sugar Ratio = Sugar / Fruit

Dosage rate varies by fruit pectin content: high-pectin 0.5-1%, medium 1-1.5%, low 1.5-2% of fruit weight. Sugar ratio affects gel strength.

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