Burn time comes down to three things: how much wax the candle holds, how it's wicked, and how it's actually burned. Get those right and a soy candle will burn close to its full potential. Get them wrong, and even a well-made candle can fall short.
As a general range, small soy candles (around 4–6 oz) tend to burn for 20–30 hours, medium candles (around 8 oz) for roughly 40–50 hours, and larger jars can stretch past 60. A SOVA candle sits at 5 oz (142 g) with a wooden wick and burns up to 35 hours, on the higher end for its size, which comes down to how the wax volume and wick are matched to the tin.
Those are useful reference points, but burn time isn't fixed. It's a range that depends on habits as much as specs.
What Actually Determines Burn Time
Wax volume. More wax, more hours, but not in a straight line. A candle twice the size doesn't necessarily burn twice as long, since wick size and container width also scale with it.
Wick type and size. A wick that's too large for its vessel burns hot and fast, pulling wax down quickly. One that's too small won't melt the wax to the edges at all. Wooden wicks burn a little differently than cotton; they tend to produce a wider, steadier flame, which shapes how evenly the melt pool forms.
Fragrance load. Fragrance oil softens wax. Candles with a heavier scent load generally burn a bit faster than lightly scented ones of the same size.
How it's burned. This is the one most people control without realizing it. Short burns that never melt the wax to the edge of the container waste wax around the sides — a problem candle makers call tunnelling. A candle that tunnels early can lose a meaningful chunk of its total burn time before it's even half gone.
Why Soy Behaves Differently Than Paraffin
Soy wax is made by hydrogenating soybean oil, which gives it a lower melting point than paraffin. The melting point can range from about 120 to 179°F depending on the blend. That lower melting point is the reason soy candles tend to burn a bit more slowly and evenly than paraffin ones of the same size; the wax consumes itself at a gentler pace, and the fragrance releases more gradually as a result. Wikipedia
It's worth noting this is a general tendency, not a fixed rule. Wick size, container shape, and fragrance load all still matter more than wax type alone.
Getting the Full Burn Time Out of a Candle
A few habits make a bigger difference than most people expect. According to the National Candle Association, trimming the wick to about ¼ inch before each burn and burning until the wax pool reaches the edge of the container on the first light helps prevent the soot buildup and tunnelling that cut a candle's life short. The NCA also recommends against burning any candle for more than a few hours at a stretch, since extended sessions can overheat the wax and container.
For a wooden wick specifically, the trim length is shorter, and the technique is a little different, SOVA's guide to trimming a wooden wick covers the full routine, including what to do when a wick won't stay lit or keeps producing a tall, flickering flame.
A short list of habits that consistently protect burn time:
- Let the first burn run until the wax melts fully to the edge of the container.
- Trim the wick before every relight, not just occasionally.
- Keep burn sessions to a few hours at a time rather than one long stretch.
- Burn away from drafts, vents, and open windows — airflow pulls the flame off-center and wastes wax unevenly.
- Extinguish with a snuffer or lid rather than blowing out a wooden wick, which helps preserve it for the next burn.
Does Candle Size Tell You Everything?
Not quite. Two candles of the same size can have noticeably different burn times if one has a poorly matched wick or a heavier fragrance load. This is why looking at the manufacturer's stated burn time, rather than estimating from ounces alone, is usually more reliable. Every candle in the SOVA collection shares the same 5 oz format, soy wax, and wooden wick, so the burn time stays consistent whether it's Mango · Eucalyptus or Mahogany Teakwood.
Frequently Asked Questions
How long should you burn a soy candle at a time?
Most guidance points to a maximum of three to four hours per session. Longer burns can overheat the wax and container without adding meaningfully to the scent throw. SOVA's guide to burning a candle properly covers session length and the first burn.
Do soy candles really burn longer than paraffin candles of the same size?
Generally, yes, thanks to soy's lower melting point, though the difference depends heavily on the specific wick and fragrance load used. For the full comparison, see soy wax vs. paraffin wax.
Why did my soy candle burn out faster than expected?
The most common cause is tunnelling from a short first burn, followed by an untrimmed wick. Both cause wax to burn unevenly rather than fully.
Does trimming the wick actually extend burn time?
Yes. An untrimmed wick burns hotter and taller than it should, consuming wax faster and producing more soot in the process.
