Free Cosmetic Formulation Tools

Professional-grade calculators for soap makers and cosmetic formulators. No sign-up required, just open and start calculating.

Soap Lye Calculator

Calculate precise NaOH and KOH amounts for cold process and liquid soap. Includes SAP values for 12 popular oils, superfat control, water percentage adjustment, and 7 real-time soap quality metrics.

NaOH and KOH support
12 common oils with SAP values
Superfat 0-15%
7 quality metrics

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HLB Calculator

Determine the required HLB value for your oil phase and calculate the optimal emulsifier blend ratio. Features auto-suggest for emulsifier pairs, batch sizing, HLB scale visualization, and match quality indicators.

Weighted HLB calculation
Emulsifier auto-suggest
Batch size scaling
Match quality rating

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Unit Conversion Calculator

Convert between %, grams, ounces, and milliliters with density-aware and batch-size-aware logic built for formulators.

%, g, oz, ml conversion
Density-aware ml conversion
Batch-size-aware % conversion
Weight-equivalent output

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Go Beyond Free Calculators

Go beyond one-off calculators with the full formulation workflow. Sign up free to access costing, compliance, batch tracking, and more.

Free plan available · Optional Pro trial