How Much Wax Does One Candle Actually Need? - The Beginner Math Guide

A candle's wax weight is not a guess — it's a formula: jar volume in ml × wax density (soy ~0.90, paraffin ~0.91, coconut blend ~0.93) × fill-line factor (0.85) = wax weight in grams. For a standard Indian 250ml jar in soy: 250 × 0.90 × 0.85 ≈ 191g of wax per candle. Add 16g fragrance (8% load), 1-2g wick + sticker, and a 3-5% cure-loss buffer. 1kg of soy wax pours roughly 5 candles in a 250ml jar. Full formula, density factors, and a quick-reference table for the 8 standard Indian jar volumes below. From CandleMakingSuppliesIndia.

A candle isn't measured in grams of wax. It's measured in grams of wax that fit into your specific jar.

The Wax-to-Vessel Density Ratio — the formula that drives every candle

Candle math has exactly one core equation. Everything else is a multiplier on top of it. Learn this equation and you can pour any jar, any wax, any batch size, with zero waste. The Wax-to-Vessel Density Ratio answers the only question that actually matters: given this jar and this wax, how many grams of wax should I melt?

The fragrance load math — how to convert wax weight into fragrance weight

Once you have wax weight, fragrance weight is a single multiplication. The standard load percentages for Indian candle makers are: 6% (subtle), 8% (Indian D2C standard), 10% (strong throw), 12% (maximum recommended). Above 12%, fragrance overload causes pooling, weeping, weak throw, and IFRA non-compliance. The formula:

Critical clarification: the 8% is calculated on wax weight, not on total candle weight. A "200g candle" in Indian D2C parlance refers to 200g of wax + 16g of fragrance + ~2g of wick/tab, sold as roughly a 218g finished product but marketed as a 200g candle (because the wax weight is the conventional naming standard). If you mistakenly calculate 8% on 218g (the total weight), you over-load by 1.5g and risk weak-throw issues. Always calculate fragrance load on wax weight only. (Weak throw issues are covered in our weak candle scent throw troubleshooting guide and fading issues in our candle fragrance fading guide.)

The 200g candle — the Indian D2C retail standard

A specific note for Indian makers: the 200g candle has become the de facto Indian D2C standard. It retails at ₹1,200-1,800 in the premium tier and ₹600-900 in the mass tier. The reason 200g dominates is operational: it pours cleanly into a 250-280ml jar, it uses round-number wax math (200g wax + 16g fragrance), and it ships within the cheapest courier weight bracket (under 500g total with packaging). Indian customers have anchored on 200g as the "normal" jar candle size, so most D2C brands optimise inventory around it.

If you are launching a D2C candle brand and don't have a strong reason to deviate, anchor your hero SKU at 200g wax weight in a 250-280ml jar. You inherit the entire Indian shipping, packaging, and pricing standard for free. (Pricing math is detailed in our how to price candles in India 2026 guide.)

The 8-jar quick-reference table — Indian standard sizes

This is the single most useful table in the guide. It maps the 8 most common Indian candle jar volumes to their wax weight in soy, paraffin, and coconut blend at the standard 0.85 fill-line factor. Bookmark this. Calculate the fragrance load on top using the 8% multiplier. No more math needed after this.

Read the table this way: pick your jar volume (left), pick your wax type, read the wax weight (right). Multiply that wax weight by 0.08 to get fragrance load. Add 1-2g for wick/sticker. That's your full per-candle bill of materials in 4 seconds.

The wick allowance and cure-loss allowance — small but non-zero

Two small allowances that beginners often skip — but they matter at batch scale. Wick allowance: a pre-tabbed cotton wick weighs roughly 0.8-1.2g, plus a wick sticker at ~0.3g. Round to 1.5g per candle as your wick allowance. For 100 candles, that's 150g of wick + sticker weight to plan for in shipping (not in melted wax — these go in dry, after the wax is poured). Cure-loss allowance: across a batch, you lose 3-5% of wax to pitcher residue, pouring spills, temperature shrinkage during the cure phase, and the wax film that coats your tools. For a 5kg batch, plan for 150-250g of cure loss.

The batch-yield calculator — 1kg, 5kg, 25kg in Indian jar terms

Now the practical question: how many candles does 1kg of wax actually make? The answer depends entirely on jar size. Here is the batch-yield calculator for the standard Indian jar volumes, in soy wax at the 0.85 fill-line factor — with the 3-5% cure-loss already deducted from yield.

When to buy 1kg vs 5kg vs 25kg — the bulk tier decision

Wax bulk-tier pricing creates a clear decision tree. Per-gram cost drops at each tier. Use this framework to decide what to order, anchored to your batch volume intent.

The fragrance load economics — what 8% really costs per candle

Here is the per-candle fragrance cost math, using the four most popular CSI fragrances at 8% load in a 250ml soy candle (191g wax × 0.08 = ~15g fragrance):

Combined with wax cost (~₹60-90 for 200g of soy) and jar cost (~₹60-150 for a 250ml premium jar), the total raw material cost for an Indian D2C candle lands at ₹230-400 per candle — supporting retail at ₹900-1,800. The fragrance is the largest single line item. This is why fragrance selection drives margin more than any other input.

The before-vs-after — guessing vs formula

FAQ — every wax math question Indian beginners ask