How Much Wax Per Candle? The Complete Measuring Guide
By Ahmed Al Hassoni, Founder of CandleStart and Grasse-certified perfumer. Updated 2026-07-16.
The most common question from new makers, and the one with the cleanest answer: use 1 gram of wax for every 1 millilitre of container volume. A 200ml jar needs about 200g of wax. That single rule, plus a scale, gets you within a few grams of a perfect fill every time.
This guide shows where the rule comes from, works through the jar sizes UAE makers actually use, adds the fragrance and buffer math, and finishes with a table that maps our 1KG, 5KG, and 25KG wax bags to real batch counts so you can buy the right amount the first time.
Why 1g Per 1ml Works
Soy and soy-blend container waxes have a solid density of roughly 0.9 g/ml, so 200ml of set wax weighs about 180g. But you never fill a jar to the brim: you leave roughly 10 percent headspace below the rim so the flame sits safely inside the glass. Fill volume of about 90 percent multiplied by density of about 0.9 lands within a couple of grams of the container's rated volume in millilitres. Hence: 1g per 1ml, headspace already included.
Two caveats. First, the rule applies to the container's actual volume, which is often larger than the marketing size; if in doubt, fill the empty jar with water on a scale and read the grams. Second, the wax weight includes the fragrance you will add, since oil replaces a little wax in the pour. For planning purposes you can ignore that nuance; the 10 percent buffer below absorbs it.
Worked Examples: Three Common Formats
All three examples use an 8 percent fragrance load, the maximum for our S100, S16, and A05 container waxes. Fragrance is always a percentage of wax weight.
- 100ml travel tin: 100g wax + 8g fragrance oil. A tidy format for testing new scents cheaply: a single 1KG bag yields nine test tins with buffer.
- 200ml jar (the standard): 200g wax + 16g fragrance oil. This is the workhorse size for most UAE candle brands.
- 300ml three-wick: 300g wax + 24g fragrance oil. Three-wicks burn wider and hotter, so the wax amount is the same math but wick selection matters far more.
Always Add a 10 Percent Buffer
Wax clings to the melting pitcher, the stirring spoon, and the thermometer. You will also occasionally top up a sinkhole or overpour slightly. Plan for roughly 10 percent waste on top of your theoretical total. For a batch of ten 200ml candles, the theoretical need is 2,000g; buy and melt against a working figure of 2,200g. As your process tightens, real-world waste drops toward 5 percent, and the leftover margin simply carries into the next batch.
Reference Table: Jar Sizes and Batch Quantities
Wax figures below include the 10 percent buffer, rounded up. Fragrance is shown at 8 percent of the unbuffered wax weight.
| Container | Wax per candle | 10 candles | 25 candles | 50 candles | Fragrance per candle |
|---|---|---|---|---|---|
| 100ml tin | 100g | 1.1kg | 2.75kg | 5.5kg | 8g |
| 150ml jar | 150g | 1.65kg | 4.15kg | 8.25kg | 12g |
| 200ml jar | 200g | 2.2kg | 5.5kg | 11kg | 16g |
| 250ml jar | 250g | 2.75kg | 6.9kg | 13.75kg | 20g |
| 300ml three-wick | 300g | 3.3kg | 8.25kg | 16.5kg | 24g |
Adjusting for Wax Melts, Pillars, and Moulds
The 1g per 1ml rule is calibrated for container candles, where headspace cancels the density gap. Two adjacent cases work slightly differently:
- Wax melts and tarts: clamshell moulds are filled to the top, so use the true cavity volume multiplied by 0.9. A standard six-cavity clamshell holds around 70-75g of wax in total, which means a 1KG bag yields roughly twelve finished clamshells with buffer.
- Pillars and silicone moulds: also filled to the brim, so measure the mould's water capacity in grams and multiply by 0.9. Pillar waxes shrink more as they cool and usually need a small second pour into the cavity that forms around the wick, so hold back an extra 5 percent of the batch for topping up rather than melting everything at once.
Leftover melted wax is never wasted: pour it into a spare tin or clamshell rather than back into the bag, and you get a free tester out of every batch.
Fragrance Load Math in Grams
Fragrance load is a percentage of wax weight, and every wax has a maximum it can bind: 8 percent for our pure and deluxe soy waxes, 10 percent for the M12 and the pillar blends. The formula is simply wax grams multiplied by the load:
- 200g wax at 8 percent = 16g fragrance oil
- 200g wax at 10 percent (M12) = 20g fragrance oil
- 2kg batch at 8 percent = 160g fragrance, roughly one and a half 100g bottles
- 5kg batch at 10 percent = 500g fragrance
Weigh oil on the same scale you weigh wax. Volume measurements mislead because fragrance oils vary in density, and a few grams either way is the difference between a strong throw and a sweating candle.
How Bulk Bags Map to Batches
Our candle waxes come in 1KG, 5KG, and 25KG sizes, with per-kilo pricing dropping as you scale. In 200ml candles, after the 10 percent buffer:
- 1KG bag: about 4-5 candles. Right for testing a new wax or scent.
- 5KG bag: about 22 candles. The sweet spot for market-stall and first-collection batches.
- 25KG: about 113 candles. Production scale, where bulk pricing changes your unit economics meaningfully.
Once you are costing full batches, jars, wicks, labels, and fragrance included, our cost calculator (currently a limited-time beta) does the per-unit arithmetic for you.
Not sure which wax those kilos should be? Our wax selection guide compares the full range with real temperature specs, and if you are pouring your very first candle, start with the beginner walkthrough. Wax and containers ship same-day across Dubai.