ProSoap Calculator
Soap Calculator
Professional-grade calculator with verified data and advanced features for perfect soap every time.
Quick Tips
- For a balanced soap, use a mix of hard (30-40%) and soft oils (60-70%).
- Coconut oil adds cleansing and lather but can be drying in amounts over 30%.
- Olive oil creates a gentle, moisturizing bar with a stable lather.
- Castor oil boosts lather and creates a creamy, stable bubble (use 5-10%).
- Butters like shea and cocoa add hardness and moisturizing properties.
- Always use distilled water and wear safety equipment when handling lye.
Advanced Features
Recent Recipes
Basic Olive Oil Soap
100% Olive Oil • 5% Superfat
Coconut Castor Bar
80% Coconut, 20% Castor • 0% Superfat
Moisturizing Triple Butter
Shea, Cocoa, Mango Butters • 7% Superfat
Safety First
- Always add lye to water, never water to lye.
- Work in a well-ventilated area.
- Wear gloves, goggles, and long sleeves.
- Have vinegar nearby to neutralize lye spills.
- Keep children and pets away from your workspace.
- Label all containers clearly.
Lye Calculator for Cold Process & Hot Process Soap
Whether you create cold process or hot process soap, this lye calculator helps you build reliable, safe, and fully customized soap recipes. It automatically calculates the right amount of sodium hydroxide or potassium hydroxide based on your chosen oils, fats, and waxes. With built-in superfat options, saponification values, and real-world soap qualities, this tool makes natural soap making simple for beginners and professionals. Use it to design balanced soap bars, prevent lye mistakes, fine-tune water discounts, and perfect your homemade soap with confidence.
Advanced Soap Calculator (CP/HP + Dual Lye):
Want deeper control? Try our Advanced Soap Calculator for dual-lye recipes, accurate oil analysis, and professional-level formulation tools.
Detergent Calculator:
Working on household cleaners? Use our Detergent Calculator for precise surfactant ratios and balanced detergent formulations.