Soap & Candle Making Calculators — Lye & Fragrance Tools | SoapMetric

Professional toolkit for soap and candle makers. Calculate lye concentration, SAP values, superfatting, and fragrance loads. Accurate tools for safe and consistent artisan products.

Popular Scenarios

Quick-start recipes used by thousands of soap and candle makers

Basic Cold Process Soap

Classic 500 g batch: 40% coconut, 40% olive, 20% castor — 5% superfat, 33% lye concentration.

Hair Bar (Low Superfat)

300 g batch with 2% superfat for a cleansing shampoo bar. High coconut for lather.

Soy Candle Fragrance Load

8% fragrance load on 500 g soy wax — maximum scent throw without sweating.

Cold Process Soap Scent

3% fragrance load on 400 g oils — IFRA-safe rate for leave-on skin products.

8 oz Mason Jar Candle

Fill a standard 8 oz mason jar with soy wax + 8% fragrance and 0.1% dye.

Double a Soap Recipe

Scale up any 300 g oil recipe to 600 g by entering a 2× multiplier.

Cost Per Bar Estimate

500 g batch, 10 bars: estimate material cost with markup to set your retail price.

Cold Process Cure Schedule

38% water, 5% superfat cold process soap — see minimum and recommended cure weeks.

Flash Point Safety Check

Fragrance flash point 65°C vs. pour temp 55°C — is it safe? Check the margin.

Mica Pigment for 500 g Batch

Medium intensity mica on 500 g oils — calculate grams and teaspoons needed.

Balanced INS Blend

60% olive + 30% coconut + 10% castor — check INS value and soap quality score.

Relaxing EO Blend

Lavender (50%) + cedarwood (30%) + bergamot (20%) at 2% usage on 500 g oils.