Soap Batch Water Ratio
Calculator

Inputs

Water needed (g)
322

Results

Water needed (g)
322
Total lye solution weight (g)
462
Resulting concentration (%)
30.30303
Target concentration (%)
30

Craft results

Water needed (g)322
Total lye solution weight (g)462
Resulting concentration (%)30.30303
Target concentration (%)30

formula-map diagram

Water needed (g)
322
Total lye solution weight (g)
462
Resulting concentration (%)
30.30303
Target concentration (%)
30

Formula breakdown

Formula

water = lye × ratio ; concentration = lye ÷ (lye + water) × 100 — illustrative, verify with a lye calculator

= 322

Note

Simplified model: these are standard craft estimates based on rectangular layouts, quoted gauge and nominal densities. Real fabric nap, directional prints, shrinkage, pattern matching, yarn lots and supplier SAP values vary, so always make a swatch or test piece and buy a little extra.

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