Candle Batch Size Calculator
Find out exactly how many candles you can make from your supplies. Enter your wax, fragrance oil, containers, and wicks to get an instant batch count with limiting factor analysis.
Leave blank if fragrance isn't a constraint
Leave blank if containers aren't a constraint
Standard containers use 1 wick per candle. Containers 3.5" or wider may need 2.
Your batch
After your 25-candle batch:
- Wax remaining3.6 oz (0.23 lbs)
Ready to restock? Top up your pure soy.
Shop soy wax on AmazonHow to calculate candle batch size
Batch planning is the difference between a smooth pour day and a mid-session scramble. Whether you're making candles for personal use, a craft fair, or an Etsy shop, knowing exactly how many candles your supplies will yield — before you melt anything — saves time, money, and frustration.
The calculator above handles two directions: if you have supplies on hand, it tells you how many candles you can make and which supply runs out first. If you're planning a production run, it calculates exactly how much to buy with a configurable waste buffer.
The correct formula for wax per candle
Fragrance load is defined as a percentage of wax weight — not total candle weight. This is the standard used by CandleScience, Lone Star, and every major supplier. Getting this right matters for accurate batch planning.
Total fill (oz) = Container size × Wax specific gravity
Wax per candle = Total fill ÷ (1 + fragrance load as decimal)
Fragrance per candle = Total fill − Wax per candle
For an 8 oz container with pure soy (0.86) at 10% fragrance load:
- Total fill = 8 × 0.86 = 6.88 oz
- Wax per candle = 6.88 ÷ 1.10 = 6.25 oz
- Fragrance per candle = 6.88 − 6.25 = 0.63 oz
- Verify: 0.63 ÷ 6.25 = 10.1% of wax weight ✓
The limiting factor — what actually determines your batch size
The most common batch planning mistake is calculating only from wax on hand without checking whether fragrance, containers, or wicks run out first.
Example with 10 lbs wax, 12 oz fragrance oil, 30 containers, 24 wicks — 8 oz pure soy at 10% FL:
- Wax covers: 160 ÷ 6.25 = 25 candles
- Fragrance covers: 12 ÷ 0.63 = 19 candles
- Containers: 30 candles
- Wicks: 24 candles
Batch size = 19 candles — limited by fragrance, not wax. After 19 candles: ~41 oz wax left, 11 containers unused, 5 wicks remaining. Mode 1 surfaces all of this automatically.
Why the theoretical maximum is always wrong
Every candle maker loses wax to three sources the raw math ignores:
- Pour residue. Wax coats the inside of your pour pitcher, the thermometer, and the walls of your melting pot. On a session of 20–30 candles, residue loss is typically 2–4 oz of wax total.
- Top-off pours. Soy and coconut wax shrink as they cool, leaving a sinkhole around the wick. A second thin pour fills this in and consumes roughly 10% of the original pour volume per candle. Paraffin shrinks less; beeswax rarely needs a top-off.
- Test candles. Any time you work with a new wax, fragrance, or container combination, make 3 test candles before committing to a production batch.
A 15% waste buffer is the commonly recommended figure. If the table says you need 5 lbs, order 6.
How to plan for a craft fair or Etsy launch
Working backward from a sales target using Mode 2:
| Target | Wax (pure soy, 8 oz, 10% FL, 15% buffer) | Fragrance | Containers & Wicks |
|---|---|---|---|
| 30 candles | ~13.5 lbs → order 15 lbs | ~21.7 oz | 35 each |
| 75 candles | ~33.7 lbs → order 35–40 lbs | ~54.3 oz | 80–85 each |
| 200 candles | ~89.8 lbs → order 2 × 50 lb cases | ~144.9 oz | 210 each |
How much wax fits in common bag sizes
| Wax package | Weight | 8 oz candles (pure soy, 10% FL, 15% buffer) |
|---|---|---|
| Starter bag | 2 lbs | ~4 candles |
| Small bag | 5 lbs | ~11 candles |
| Standard bag | 10 lbs | ~20 candles |
| Half case | 25 lbs | ~51 candles |
| Full case | 50 lbs | ~102 candles |
Frequently Asked Questions
How many candles can I make with 10 lbs of soy wax?
From 10 lbs (160 oz) of pure soy at 10% fragrance load in 8 oz containers, the theoretical maximum is 25 candles. With a realistic 15% waste buffer, real yield is closer to 20–22 candles. Use Mode 1 above to get the exact number for your container and fragrance load.
What is a waste buffer and what percentage should I use?
A waste buffer is extra supplies to account for pour pitcher residue, top-off pours for soy/coconut wax shrinkage, and test candles. 15% is the commonly recommended figure for experienced makers working with a familiar combination. Use 20% for your first batch with any new wax, fragrance, or container.
Should I include fragrance oil in my batch calculation?
Yes — fragrance is frequently the supply that runs out first because it's purchased in smaller quantities and consumed at 0.63–0.82 oz per 8 oz candle depending on your fragrance load. Entering your fragrance on hand in Mode 1 shows whether wax or fragrance is your true limiting factor.
How much fragrance oil do I need per pound of wax?
At 10% fragrance load: 1.6 oz per lb. At 8%: 1.28 oz per lb. At 6%: 0.96 oz per lb. At 12%: 1.92 oz per lb. These figures follow the industry-standard definition where fragrance load is a percentage of wax weight, not total candle weight.
Can I use this calculator for wax melts?
Yes — the batch logic is identical. Wax melts have no wick, so leave the wicks field blank. For container size, use the wax capacity of your clamshell or mold in oz. Standard clamshells hold 2.5 oz of wax (6 individual melts at ~0.4 oz each).
Why does my wax calculation never match the theoretical maximum?
Three reasons: pour pitcher residue, top-off pours for soy/coconut wax shrinkage (~10% extra wax usage), and test candles. Together these typically reduce real yield by 10–20% compared to the theoretical maximum. This is normal — the waste buffer in Mode 2 accounts for all three.