I'm Considering a More Expensive Fragrance Oil With Stronger Performance — How Do I Compare Cost Per Candle Rather Than Simply Comparing Supplier Price Per Kilogram?

Why rupees per kilogram answers a question you did not ask

A supplier quotes in rupees per kilogram because that is the unit they ship in. You buy in kilograms once and then pour in grams for months, so the quote arrives in a unit that is true, checkable and almost useless for the decision in front of you. Two quotes that differ by ₹3,000 a kilogram look enormous on a price list. Whether they are enormous in your candle depends on one thing the price list does not know: how many grams of that oil each candle actually takes.

That number is fixed by your fill and your load, and nothing else. Fragrance load is a percentage of wax weight — that is how CSI product pages state it, and it is the convention this page and the whole costing series carries. So a candle holding 200 g of wax at 8% takes 16 g of fragrance, and the vessel receives 216 g of scented wax rather than 200 g. Sixteen grams a candle means a kilogram of oil scents 62.5 candles, and 62.5 is the only number you need to convert every quote you will ever be sent at that recipe.

The conversion is a division and a multiplication, in that order. Quote ÷ 62.5 = rupees of fragrance in one candle. Or, if you prefer to hold one figure in your head: every ₹1,000 per kilogram on a quote is ₹16.00 a candle at this recipe. A ₹4,000 quote is four lots of that. A ₹12,000 quote is twelve. It scales in a straight line, which is exactly why the price list feels so alarming and the candle so much less so — the straight line is being added to a large fixed base.

Four live rates, converted

Your own quotes are yours, and the honest way to demonstrate a method is on rates you can check rather than on numbers made up to flatter it. So the table below runs four oils that are in stock at CSI in September 2026 and sit at four genuinely different rate points, from ₹2,891.00 to ₹11,999.00 a kilogram. The candle is held still: Luxury Soy Wax Chunks at ₹599.00 a kilogram, 200 g of it, a Ceramic Jar at ₹129.80, an Eco Candle Wicks Thin (C1) at ₹5.90, and 8% of the wax weight in fragrance. Only the bottle changes.

Read the last row slowly, because it is the whole argument of this page. On the price list the dearest of the four is 4.15 times the cheapest — a gap of ₹9,108.00 a kilogram, which is the kind of number that makes a maker abandon a scent before testing it. Inside the candle the same choice is ₹145.73, and the finished materials are only 1.48 times apart, because ₹255.50 of wax, vessel and wick sits under every column and does not care what is in the bottle. Over a hundred candles the fragrance choice is ₹14,572.80. That is a real number and worth deciding deliberately. It is not the number the price list implied.

The uncomfortable half of that finding is the vessel. At ₹129.80 the Ceramic Jar is a larger line than the fragrance in three of the four columns, and larger than the wax in all four. A maker who spends an afternoon hunting a cheaper oil and buys the same vessel out of habit has optimised the smaller half of the candle. Cost the vessel with the same discipline: price it per piece, and measure what it holds rather than trusting the size in its name.

What "stronger performance" does to the arithmetic

The reason anyone considers a dearer oil is a claim about performance, and the reason the comparison is hard is that performance changes the load, and the load changes the divisor. If an oil genuinely holds up at a lower percentage in your wax, it is not being compared at the same grams as the cheaper one and the price list is even less informative than it looked. The converter handles this without any new maths: put each oil in at the load it actually needs, and the candles-per-kilogram figure changes with it.

Be careful about where that load comes from. CSI publishes a candle usage range on a product page where the manufacturer states one — Citronella states up to 10%, Mango Coconut states 6–10% of total wax weight — and where a page states nothing, this page says so rather than estimating. A published range is not a performance ranking and a rate is not a performance ranking either. The only thing that tells you the load an oil needs in your wax and your vessel is a burn test you run yourself. What the table below does is price the outcome of that test once you have it.

Two of the four pages here publish no candle usage range at all: Saffron Cedarwood and Tangerine. That is ordinary rather than alarming — fragrance oil listings vary in how much the manufacturer publishes — but it changes what you may say about a load. On those two oils the stated maximum of 13% of total wax weight for Luxury Soy Wax Chunks is the only published limit, and there is no second figure to take the lower of. Ask on WhatsApp for MSDS and IFRA documentation before you commit a batch to an unpublished load.

A quote is only true for the pack it belongs to

Before you convert a quote, check which pack it is a quote for. It is worth saying plainly that CSI publishes no quantity-discount ladder: there is no rule on this store that a larger pack carries a lower rate, and the only way to know what a pack costs per gram is to divide its price by its grams. Run that on the four oils in this post and they behave four different ways, which is exactly why a generalisation would be useless to you.

Four products, four shapes. On Citronella the rate falls steeply and keeps falling: ₹9.44 a gram at 15 gm against ₹2.89 at a kilogram, which is ₹76.46 a candle between the 100 gm pack and the kilogram. On Mango Coconut it falls once and then stops, so the step worth having is ₹16.58 a candle. On Tangerine the largest pack is fractionally dearer per gram than the 50 g one — ₹0.30 a candle against you, which is nothing, but it is not the direction anyone assumes. And on Saffron Cedarwood the ladder does something worth a sentence of its own.

Saffron Cedarwood is ₹5.17 a gram in its 500 gm pack and ₹6.87 a gram in its kilogram pack. Two 500 gm packs therefore hold exactly the same oil as one kilogram pack and cost ₹5,168.40 against ₹6,867.60 — a difference of ₹1,699.20 for identical contents. Converted into candles, the 500 gm rate puts ₹82.69 of fragrance in the candle against ₹109.88 from the kilogram, a gap of ₹27.19 a candle. None of that is visible on a price list that quotes one rate per kilogram. All of it is visible in thirty seconds of division.

Converting a quote you have been sent, in four steps

What a rate per kilogram never contains

A converted quote is a materials figure, and it is honest only if it says what it excludes. Two exclusions are worth quantifying before the blanks begin. The first is delivery to you. The 1 kg pack of Citronella carries a stored packed weight of 1.5 kg, because a kilogram of oil ships in a bottle inside a box, and the cheapest published band covering that weight in September 2026 is ₹180.00 on Standard Shipping. Spread across the 62.5 candles that kilogram scents, that is ₹2.88 a candle — larger, on these four rates, than the entire step from the Mango Coconut 100 gm pack to its 500 gm pack. Ordering the oil and the wax together rather than a week apart is worth more than most of the rate hunting: two separate 1.5 kg parcels come to ₹360.00 against ₹270.00 for one 3.0 kg parcel, a difference of ₹90.00. Bands are as published in September 2026 and can change.

The second is wax. It is easy to forget that changing the oil changes nothing else, so the grade you pour is a separate decision with its own ladder. Luxury Soy Wax Chunks runs from ₹598.00 a kilogram in the 500 g pack to ₹599.90 in the 10 kg pack — a spread of ₹1.90 a kilogram, with the smallest pack the cheapest per kilogram of the four. On 200 g of wax that is a fraction of a rupee a candle either way. It is mentioned here only so that nobody converts a fragrance quote carefully and then assumes the wax line takes care of itself.

One of those blanks deserves naming out loud, because it is the cost of this very decision. Choosing between two oils properly means pouring test candles in both, curing them, and burning them in a room the size of the room your customer has. Those candles are materials you paid for and cannot sell. If a comparison saves ₹145.73 a candle and the test costs you a dozen candles of materials, the saving pays the test back in the low hundreds of units. That is a fine trade at production volume and a poor one if you make thirty candles a month, and knowing which you are is more useful than any rate on any price list.

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