My 200 g Soy Candle Lasts Only 22 Hours While Competing 200 g Candles Claim 35–40 Hours — Is My Wick Consuming Wax Too Quickly?

Why grams per hour is the only figure you own

Total burn time is the product of three independent things, and lumping them into one number is why this question feels unanswerable. The first is how much wax is in the jar, which is a decision you made at the pour. The second is how fast the flame consumes it, which is what the wick, the jar and the formulation together determine. The third is how much wax never gets burned at all — the shell left on the glass, the plug under the tab — which is wax your customer paid for and could not use.

Change the first and hours move without anything about the burn changing. Pour 240 g instead of 200 g at the same 9.09 g/h and you have a "26-hour candle" with an identical flame, an identical throw and an identical wick. Nothing improved. You just sold 40 g more wax. That is why "hours" is the least useful unit in candle making and the most common one on a label.

Grams per hour does the opposite. It holds the fill constant by dividing it out, and what is left describes the burn itself: (weight before − weight after) ÷ hours, with the whole candle on one scale, jar included, measured between sessions. It is comparable across jar sizes, across fills, across your own product range, and across two candles you poured on the same afternoon. It is also the only one of the three components you can isolate without reformulating anything.

Look at the last row carefully, because it is the trap at the other end of this cluster. A candle at 4.55 g/h would print beautifully — forty-four hours on a 200 g jar — and it might be a candle that never opens a full melt pool, leaves a thick shell on the glass and hands the customer twenty hours of a weak, tunnelled burn followed by a jar they throw away half full. Long hours bought by under-wicking are not a longer candle. They are a shorter one with wax the customer cannot reach. That is the mirror of your problem, and it is the reason the honest target is a rate you have measured and understood, not the biggest number you can print.

What a 35–40 hour claim does not tell you

Take the claim at face value for a moment and ask what it would take to reproduce it. A burn-time figure is only meaningful alongside the conditions that produced it, and a label carries none of them. Here are the five that change the answer most, with the arithmetic of how far each one can move a number on its own.

There is one more reason not to treat the gap as proof. A factor of 1.59× to 1.82× in consumption is a very large difference in flame behaviour — not a subtle one. If the other candle really were running at 5.00–5.71 g/h in a jar of your diameter, you would almost certainly be able to see the difference in the melt pool, the flame height and the time it takes to reach the glass. You have not seen that candle burn. You have seen its box.

Measuring your own rate tonight

This is the part that costs almost nothing and settles the argument. You need a scale that reads to a gram or finer, a clock, a notebook, and a candle you are willing to burn properly rather than carefully. The method below produces three independent rate measurements from one candle, which is enough to tell a real rate from a one-off.

The rate ladder: what your 22 hours would become

Once you have a measured rate, every "what if" becomes arithmetic instead of hope. The table below works both directions on your own 200 g fill: what hours each rate would deliver, and what the rate would have to fall to in order to reach a given number of hours. Use it to decide whether the change you are considering is even worth the testing it will cost.

Two things fall out of this table that are worth sitting with. First, reaching 35 hours from where you are means cutting consumption by 37%, and reaching 40 hours means cutting it by 45%. Those are not fine adjustments. A change that large in a jar candle usually shows up as a visibly smaller flame, a slower melt pool and a real risk of tunnelling — which is why the honest answer to "can I get to 40 hours?" is often "not in this jar at this fill without creating a different problem". Second, the third column is the one to publish. If you decide to print hours at all, print them from usable wax, because that is the number your customer experiences.

Is it really the wick?

Burn rate is a property of the whole candle. The wick sets how much fuel reaches the flame, but the jar decides how much heat is trapped and recycled into the pool, the fill depth decides how far the flame sits below the rim, the fragrance load and the dye sit in the fuel path, and the room decides whether a draught is pulling the flame sideways. Before you spend a round of testing on a new wick, rule out the free suspects. Each row below is something you can check or vary without buying anything.

What CSI actually lists if you do bracket the wick

Here is the honest constraint, and it changes the advice you will read elsewhere. There is no long graded ladder of cotton wick sizes in the CSI range to step down through. The workhorse product lists two sizes, C1 and C2, and its page states no diameter at all — the C1 and C2 labels appear only as Shopify variant names. Two wick pages do state something about diameter: Eco Candle Wicks Loose is described as "designed specifically for 2 inch diameters", and Cotton Braided Wicks Ready Made as "engineered for large-diameter candles exceeding 8 cm" with a stated wick height of 10.16 cm. That is the whole of the published guidance.

So "wick down one size" is often not a step that exists. What does exist is a bracket across type and count: a thinner cotton, a thicker cotton, a wooden wick, a braided wick, one wick or two. You pour the bracket into identical jars with identical wax, oil and load, and you measure the rate of each. The cards below are what the bracket is built from, with every listed pack and the cost per wick so you can see what a round of testing actually costs.

A six-jar bracket — three on your current wick, three on the candidate — costs you the wax, the oil, the jars and the wicks, plus two to three weeks of cure before the first burn. That is why the free suspects in the previous section come first. The wick selection guide and cotton versus wooden wick cover the choice itself; this page is about the measurement that tells you whether the choice worked.

What you can honestly print on your own label

The commercial reason this matters is that at a ₹1,000–₹2,000 price point burn time is part of what the customer believes they bought. A candle that dies well short of its printed figure is a refund conversation, a review problem and a repeat-purchase problem — so the figure you print has to be one you would be comfortable having tested in front of you. Three rules get you there, and all three come out of the measurement you have just made.

Notice what this does to the original question. You began by asking whether your wick was consuming wax too quickly compared with a 35–40 hour claim. You end with a figure of your own — around 20 to 22 hours of usable burn at 9.09 g/h in your jar, in four-hour sessions, trimmed — that is specific, reproducible and honest, and a documented decision about whether to bracket the wick. That is a stronger commercial position than a bigger number you cannot stand behind. Labelling and consumer-information requirements are a matter for a qualified adviser in your market; what this page gives you is the measurement underneath whatever you decide to print.

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