How to Calculate Bulk Fragrance Oil Requirements for Candle Manufacturing
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What load and allowance should I use? The load your burn tests proved, commonly 6–10% in soy; 8% is CSI's worked default. An allowance of 3–5% covers pour loss and confirmation pours; it is a working assumption. See the variables.
How do I calculate from a quantity of wax instead? Oil = wax × L ÷ (1 − L) when load is a share of the finished candle. For 25 kg of wax at 8%: 2.174 kg. Fragrance Oil Required for 100 Kg of Candle Wax explains both conventions.
Can you show a full example? 400 × 200 g at 8%: 400 × 200 × 0.08 = 6,400 g; × 1.05 = 6,720 g; in Gardenia that is 6 × 1 kg + 1 × 500 g + 2 × 100 g + 1 × 50 g for ₹29,247.02. The full bill with wax, wicks and jars is ₹1,06,412.02. See example 1.
The variables
| Symbol | Meaning | Typical value | Where it comes from |
|---|---|---|---|
| N | Number of candles of one size and scent | Your production plan | Orders, forecast, or a run plan by scent |
| W | Finished candle weight in grams | 100–250 g for container candles | Weigh a finished test candle, not the jar's stated capacity |
| L | Fragrance load as a share of the finished candle | 6–10% in soy; 8% as CSI's default | Your burn tests, within the wax's rated maximum (Chunks up to 13%, CSI 464 up to 10%) |
| a | Allowance for loss | 3–5% | Your own records of oil used vs oil in candles; start at 5% |
W is the one most often got wrong. It is the weight of wax plus oil in the finished candle, which is less than the jar's brim capacity once you leave headspace. Weigh an empty jar, weigh a finished candle, subtract. L must be stated as a share of the finished candle to use this formula directly; if your recipe states it against the wax, convert it first with L(candle) = L(wax) ÷ (1 + L(wax)).
With W and L fixed, oil per candle is a single number, W × L. The grid gives it for the common sizes and loads, including the in-between loads of 7% and 9% that many makers settle on:
| Candle weight | 6% | 7% | 8% | 9% | 10% |
|---|---|---|---|---|---|
| 100 g | 6 g | 7 g | 8 g | 9 g | 10 g |
| 150 g | 9 g | 10.5 g | 12 g | 13.5 g | 15 g |
| 200 g | 12 g | 14 g | 16 g | 18 g | 20 g |
| 250 g | 15 g | 17.5 g | 20 g | 22.5 g | 25 g |
| Allowance | Multiplier | Per 1,000 g poured | Per 200 g candle at 8% |
|---|---|---|---|
| 0% | × 1.00 | 1,000 g | 16.00 g |
| 3% | × 1.03 | 1,030 g | 16.48 g |
| 4% | × 1.04 | 1,040 g | 16.64 g |
| 5% | × 1.05 | 1,050 g | 16.80 g |
The formula, step by step
Cost per candle falls out of the same numbers: oil cost per candle = W × L × price per gram. For a 200 g candle at 8% in Gardenia at its 1 kg rate, 16 × ₹4.33 = ₹69.31. Candle Fragrance Oil Price in India uses this to compare oils; Candle Fragrance Oil Price Per Kg in India lists per-kilo prices across the catalogue.
Example 1: one size, one scent — with the full bill
A maker is pouring 400 × 200 g candles at 8% in Gardenia, with a 5% allowance. Step by step: N × W × L = 400 × 200 × 0.08 = 6,400 g. × 1.05 = 6,720 g. Gardenia's listed sizes are 15 g, 50 g, 100 g, 500 g and 1 kg, with 100 g, 500 g and 1 kg all at ₹4.33 a gram. The fewest-bottle cover within 1% of the cheapest is 6 × 1 kg + 1 × 500 g + 2 × 100 g + 1 × 50 g (6,750 g) for ₹29,247.02. The strictly cheapest cover is 67 × 100 g + 2 × 15 g for ₹29,221.04, ₹25.98 less and 59 more bottles to open; either is correct.
| Item | Needed (incl. wastage) | Cheapest listed pack combination | Cost |
|---|---|---|---|
| Gardenia | 400 candles · 6,400 g + 5% = 6,720.0 g | 6 × 1 kg + 1 × 500 g + 2 × 100 g + 1 × 50 g (6,750 g) | ₹29,247.02 |
| Luxury Soy Wax Chunks | 400 × 184 g + 5% = 77.280 kg | 7 × 10 kg + 1 × 5 kg + 2 × 1 kg + 1 × 500 g (77.5 kg) | ₹46,485.00 |
| Eco Candle Wicks Thin C1 | 400 wicks | 4 × 100 pack | ₹2,360.00 |
| White Matte Glass Jar | 400 jars | 80 × pack of 5 (400 jars) | ₹28,320.00 |
| Total | ₹1,06,412.02 |
₹266.03 a candle in materials, excluding labour, packaging, freight and GST. The wax line follows the same formula with (1 − L) in place of L: 400 × 200 × 0.92 × 1.05 = 77.28 kg. Oil and wax are CSI live pricing, pulled 24 September 2026; the Eco Candle Wicks Thin C1 and White Matte Glass Jars were verified on 10 September 2026.
Example 2: two sizes, three scents
A range of 900 candles: 600 of 150 g and 300 of 250 g, all at 8%, across three scents — Peach Melon Berry, Royal Apricot and Coffee Vanilla Tobacco. Oil per candle is 12 g for the 150 g and 20 g for the 250 g. Each scent's oil is the sum of its cells, then × 1.05, then rounded to that oil's listed packs.
| Scent | Cells (N × W × L) | Poured | × 1.05 | Packs | Cost |
|---|---|---|---|---|---|
| Peach Melon Berry | 300 × 150 g × 0.08 + 100 × 250 g × 0.08 | 5,600 g | 5,880 g | 5 × 1 kg + 1 × 500 g + 4 × 100 g | ₹24,645.48 |
| Royal Apricot | 200 × 150 g × 0.08 + 100 × 250 g × 0.08 | 4,400 g | 4,620 g | 4 × 1 kg + 6 × 100 g + 1 × 50 g | ₹17,053.00 |
| Coffee Vanilla Tobacco | 100 × 150 g × 0.08 + 100 × 250 g × 0.08 | 3,200 g | 3,360 g | 3 × 1 kg + 4 × 100 g | ₹29,393.00 |
| Order | 900 candles | 13,200 g | 13,860 g | ₹71,091.48 |
The range pours 13,200 g and orders 13,860 g before rounding, for ₹71,091.48 of oil. Notice the effect of each oil's ladder. Royal Apricot has no 500 g listed, so its top-up is 100 g and 50 g bottles. Coffee Vanilla Tobacco starts at 50 g and is ₹8.60 a gram at 1 kg, so its 200 candles cost ₹29,393.00 — more than Royal Apricot's 300. A premium scent in a small share of a range costs more than its candle count suggests, which How Much Fragrance Oil Do I Need for 500 Candles? explores.
If you keep the calculation in a spreadsheet, lay it out the way the steps run. One row per size, one column per scent, with N in each cell. A row underneath holds W × L for each size. A sum row multiplies each column by the W × L row and adds it up. A single cell holds the allowance, and the order row is the sum row × (1 + allowance). Keep the pack rounding outside the sheet, or in a separate tab, because it depends on each oil's live price ladder, which changes. When a price changes, only the last step moves; the grams stay right.
Keep a record against every batch as well: oil weighed out, oil left over, candles poured. Divide oil used by candles poured and you have your true grams per candle; compare it with W × L and the gap is your real loss. After three or four batches that number is better than any working assumption, including ours. Makers who track it usually find their allowance can come down to 3%, and occasionally that one scent needs a little more.
Example 3: starting from wax
Sometimes the fixed quantity is the wax: you have bought 25 kg and want the oil to match. With load as a share of the finished candle, oil = wax × L ÷ (1 − L). At 8%: 25,000 × 0.08 ÷ 0.92 = 2,173.9 g, and with a 5% allowance 2,282.6 g. The wax makes 135 × 200 g candles (184 g of wax each), with 160 g of wax left over. If your recipe states load against the wax, the oil is simply 25,000 × 0.08 = 2,000 g, a finished-candle load of 7.41%. Fragrance Oil Required for 100 Kg of Candle Wax covers the two conventions for 100 kg.
| Load | Share of finished candle: wax × L ÷ (1 − L) | Share of wax: wax × L | Difference |
|---|---|---|---|
| 6% | 1,595.7 g | 1,500.0 g | 95.7 g |
| 7% | 1,881.7 g | 1,750.0 g | 131.7 g |
| 8% | 2,173.9 g | 2,000.0 g | 173.9 g |
| 9% | 2,472.5 g | 2,250.0 g | 222.5 g |
| 10% | 2,777.8 g | 2,500.0 g | 277.8 g |
Six calculation errors, and the fix for each
Most bulk-order mistakes are not arithmetic slips. They are wrong inputs or steps in the wrong order. These are the ones that recur.
| Pack | Price | Per gram | Candles at 16 g |
|---|---|---|---|
| 15 g | ₹105.02 | ₹7.00 | 0.94 |
| 50 g | ₹223.02 | ₹4.46 | 3.12 |
| 100 g | ₹433.00 | ₹4.33 | 6.25 |
| 500 g | ₹2,166.00 | ₹4.33 | 31.25 |
| 1 kg | ₹4,332.00 | ₹4.33 | 62.50 |
| Pack | Price | Per gram | Candles at 16 g |
|---|---|---|---|
| 15 g | ₹81.42 | ₹5.43 | 0.94 |
| 50 g | ₹223.02 | ₹4.46 | 3.12 |
| 100 g | ₹417.72 | ₹4.18 | 6.25 |
| 500 g | ₹2,088.60 | ₹4.18 | 31.25 |
| 1 kg | ₹4,177.20 | ₹4.18 | 62.50 |
| Pack | Price | Per gram | Candles at 16 g |
|---|---|---|---|
| 50 g | ₹449.00 | ₹8.98 | 3.12 |
| 100 g | ₹899.00 | ₹8.99 | 6.25 |
| 500 g | ₹4,399.00 | ₹8.80 | 31.25 |
| 1 kg | ₹8,599.00 | ₹8.60 | 62.50 |
To skip the arithmetic for common cases, Bulk Fragrance Oil Procurement Calculator for Candle Manufacturers turns this formula into lookup tables. For the same maths applied to fixed candle counts, see How Much Fragrance Oil Do I Need for 100 Candles?, How Much Fragrance Oil Do I Need for 500 Candles? and How Much Fragrance Oil Do I Need for 1,000 Candles?; for monthly volumes, How Many Kg of Fragrance Oil Does a Small Candle Manufacturer Need Per Month?.
CANDLEMAKINGSUPPLIESINDIA supplies raw materials, not finished candles. A method page is where a supplier could quietly build in rounding that sells more oil. This one rounds once, at the end, and shows the strictly cheapest bottle combination beside the simpler one.
Every oil and wax price on this page comes from live CSI listings pulled on 24 September 2026. Wick and jar prices are those verified for Blog 760 on 10 September 2026. The formula is arithmetic; pack combinations use real in-stock sizes (the fewest packs within 1% for oil, 0.5% for wax, of the cheapest). All figures are shown to two decimals.
The 8% load, the 3–5% allowance and the example quantities are working assumptions for illustration. Your candle weight, load and loss records decide the real figures. For a calculation check, stock confirmation, GST invoicing, MSDS or IFRA documentation, message us on WhatsApp at +91 7397976926.
Frequently asked questions
- Bulk Fragrance Oil Procurement Calculator for Candle Manufacturers
- Fragrance Oil Required for 100 Kg of Candle Wax
- How Much Fragrance Oil Should I Order for a Large Candle Production Run?
- How Many Kg of Fragrance Oil Does a Small Candle Manufacturer Need Per Month?
- How Much Fragrance Oil Do I Need for 1,000 Candles?
- How Much Fragrance Oil Do I Need for 100 Candles?
- How Much Fragrance Oil Do I Need for 500 Candles?
- Candle Fragrance Oil Price Per Kg in India
Customer reviews: The six reviews at the top of this page are genuine, published Judge.me reviews left by CSI customers on the product pages named on each card — Eco Candle Wicks, Premium Candle Wicking Needle and Bamboo Wick Holder. They are general product reviews, not assessments of the guidance set out here. Names, star ratings, dates and products are as recorded by Judge.me and wording is unedited. "Verified buyer" appears only on the three reviews Judge.me recorded as verified — Monika Deep, Subhankar Roy and Sneha Tamang; the reviews from Ashwini, LJ and Lalitha Jagan are published but not recorded as verified, and carry no badge.
Figures pulled 24 September 2026, CSI live pricing: Gardenia ₹105.02 / 15 g, ₹223.02 / 50 g, ₹433.00 / 100 g, ₹2,166.00 / 500 g, ₹4,332.00 / 1 kg. Peach Melon Berry ₹81.42 / 15 g, ₹223.02 / 50 g, ₹417.72 / 100 g, ₹2,088.60 / 500 g, ₹4,177.20 / 1 kg. Royal Apricot ₹183.00 / 50 g, ₹367.00 / 100 g, ₹3,667.00 / 1 kg. Coffee Vanilla Tobacco ₹449.00 / 50 g, ₹899.00 / 100 g, ₹4,399.00 / 500 g, ₹8,599.00 / 1 kg. Luxury Soy Wax Chunks ₹299.00 / 500 g, ₹599.00 / 1 kg, ₹2,995.00 / 5 kg, ₹5,999.00 / 10 kg. Luxury Soy Wax CSI 464 rated up to 10%. Figures verified 10 September 2026 (Blog 760): Eco Candle Wicks Thin C1 ₹590.00 / 100 (₹5.90 each); White Matte Glass Jar ₹354.00 / 5 (₹70.80 each).
Non-price figures and assumptions: Oil = N × W × L × (1 + a), with L as a share of the finished candle weight (200 g at 8% = 16 g oil + 184 g wax). From wax: oil = wax × L ÷ (1 − L). Conversion: L(candle) = L(wax) ÷ (1 + L(wax)). The 8% load, 5% allowance and example quantities are working assumptions. Orders are the fewest in-stock packs costing within 1% (oil) or 0.5% (wax) of the strictly cheapest. Material costs exclude labour, packaging, freight and GST. Load ceilings of up to 13% (Luxury Soy Wax Chunks) and up to 10% (CSI 464) are wax makers' stated maximums, not regulatory limits. Diwali 2026 falls on 8 November. Prices and availability change — the linked product pages are always authoritative.