Candle Fragrance Load Calculator is a free web tool for hobby and small-batch candle builders, offered as a free tool by RV Organica. Enter your wax weight, container size or an oil you already have (in grams or ounces), the number of candles, and a fragrance load from 2% to 15%, and it works out the fragrance oil to weigh and the wax to melt.
It also gives add-at and cure temperatures and times, and a recipe card you can save for repeat batches. At an 8% load it gives 80 g of oil per 1 kg of wax. It runs in the browser and the page does not mention any signup. RV Organica is a fragrance oil and candle-making supplies manufacturer in Panipat, India.
RV Organica built a calculator that gives the right fragrance oil number in a few steps and put it online for free.