Free Soap and Cosmetic Calculators
19 free calculators for soap makers, cosmetic formulators, and candle makers. No signup required -- just pick a calculator and start formulating.
Soap Making
Soap Calculator (Lye Calculator)
Calculate exact lye and water amounts for cold process and hot process soap. Supports NaOH, KOH, and dual-lye recipes with superfat control.
Shampoo Bar Calculator
Formulate solid shampoo bars with the right balance of cleansing, conditioning, and lather for different hair types.
Masterbatch Lye Calculator
Pre-mix large batches of lye solution for faster soap making sessions. Calculate concentrations and shelf-stable quantities.
Bath and Body
Bath Bomb Calculator
Get perfect bath bomb ratios every time. Calculate baking soda, citric acid, oils, and colorants by mold size and quantity.
Bath Salts Calculator
Blend therapeutic bath salts with the right proportions of Epsom salt, Dead Sea salt, essential oils, and botanicals.
Sugar Scrub Calculator
Formulate exfoliating sugar scrubs with balanced ratios of sugar, carrier oils, fragrance, and optional additives.
Salt Scrub Calculator
Create mineral-rich salt scrubs with proper salt-to-oil ratios, essential oils, and skin-nourishing ingredients.
Skincare and Body Care
Lotion Calculator
Formulate stable oil-in-water lotions and creams. Calculate emulsifier ratios, water phase, and oil phase percentages.
Body Butter Calculator
Create rich, whipped body butters with the right blend of butters, oils, and emollients for your desired texture.
Lip Balm Calculator
Calculate wax, butter, and oil ratios for lip balms of any firmness. Scale by tube or tin count.
Face Serum Calculator
Blend carrier oils and active ingredients for targeted face serums. Control concentrations of essential oils and extracts.
Deodorant Calculator
Formulate natural deodorants with baking soda, arrowroot, coconut oil, and essential oils. Adjust for sensitivity.
Beard Oil Calculator
Blend carrier oils and essential oils for beard care. Calculate ratios by bottle size with scent strength control.
Massage Oil Calculator
Create professional massage oil blends with carrier oils and aromatherapy-grade essential oils at safe dilution rates.
Fragrance
Perfume Oil Calculator
Build layered fragrance blends with top, middle, and base notes. Calculate dilution ratios for roll-on or spray perfumes.
Solid Perfume Calculator
Formulate wax-based solid perfumes with proper beeswax, carrier oil, and fragrance ratios for portable scent.
Room Spray Calculator
Mix room and linen sprays with the right water, alcohol, and fragrance oil ratios for lasting scent throw.
Candles and Wax
More Than Just Calculators
Soaply is a complete formulation platform. Save unlimited recipes, log batches, track ingredient inventory, calculate costs, and share recipes with the community.