What Is a Candle Wick Size Chart?

A candle wick size chart is a starting guide that helps candle makers choose a wick based on the inside diameter of the candle container. It is useful for beginners making soy candles, paraffin candles, beeswax candles, wax blend candles, jar candles, tin candles, and scented candles.

The chart does not give a final guaranteed wick. It only gives a starting point. The final wick must be tested because wax type, fragrance load, dye, additives, jar shape, and room conditions can change how the candle burns.

The correct wick should create a steady flame, even melt pool, good hot throw, low smoke, safe jar temperature, and minimum leftover wax. A wrong wick can cause tunneling, black smoke, mushrooming, overheating, or poor scent throw.

For candle wicks, soy wax, paraffin wax, candle jars, fragrance oils, wick stickers, wick holders, thermometers, colors, silicone molds, and DIY candle-making supplies, visit Jindeal.com.

What Causes the Problem?

Beginners often face candle problems because they select wick size by guessing or only by wax weight. Wick size should mainly start from container diameter and then be tested with the exact candle formula.

Common causes include:

• Choosing wick by candle weight instead of jar diameter
• Using the same wick for all candle sizes
• Using a wick too small for a wide jar
• Using a wick too large for a small jar
• Changing wax type without changing wick test
• Adding fragrance oil without retesting wick
• Using too much dye, mica, or powder
• Skipping cure time before testing
• Not checking melt pool and flame height
• Not checking jar temperature
• Burning test candles in fan, AC, or airflow
• Selling candles without full burn testing

For example, a wick that works well in a 5 cm jar may tunnel in a 7 cm jar because it cannot melt wax across the full surface. A wick that works in paraffin wax may smoke or mushroom in soy wax.

Beginner Candle Wick Size Chart

This chart is a beginner-friendly starting point by container diameter. Always check your wick supplier chart and burn test before selling.

Step-by-Step Solution

Step 1: Measure the Inside Diameter of the Jar

Measure the inner diameter of the candle jar or tin in centimeters. Use the widest area where wax must melt. Wick size is based mainly on burn diameter, not only on wax weight.

Step 2: Identify the Wax Type

Soy wax, paraffin wax, beeswax, coconut wax, and wax blends burn differently. The same wick may behave differently in each wax. Always test wick with the exact wax you plan to use.

Step 3: Choose a Starting Wick from the Chart

Use the container diameter chart as a starting point. Then choose one wick from your supplier’s wick chart that matches your wax and jar size.

Step 4: Test Three Wick Sizes

For better results, test three candles: one wick size below, one expected wick size, and one wick size above. This helps you compare tunneling, smoke, melt pool, and scent throw.

Step 5: Add Fragrance and Color Before Testing

Do not test wick only in plain wax if your final candle will include fragrance oil and color. Fragrance and dye can change how the wick burns.

Step 6: Let the Candle Cure

Allow the candle to cure before testing. Cure time depends on wax and fragrance. Testing too early may give weak scent throw or different burn performance.

Step 7: Start the First Burn Test

Trim the wick and burn the candle in a draft-free area. Watch the flame height, melt pool width, soot, mushrooming, jar temperature, and fragrance throw.

Step 8: Read the Melt Pool

If wax remains thick on the sides after proper burn time, the wick may be too small. If the candle burns too hot, smokes, or has a very high flame, the wick may be too large.

Step 9: Check Jar Temperature

The jar should not become dangerously hot. If the container becomes too hot, the wick may be too large or the candle formula may need adjustment.

Step 10: Record the Final Wick

Write down jar diameter, wax type, fragrance percentage, color, wick size, cure time, burn result, and final decision. This record helps you make the same candle again.

Common Mistakes

1. Using Candle Weight Instead of Diameter

Wick size depends mainly on the melt diameter, not only how many grams of wax are used.

2. Copying Wick Size Without Testing

Another maker’s wick size may not work with your wax, jar, fragrance, or climate.

3. Using One Wick for All Jars

Different jar diameters need different wick tests.

4. Using Too Small a Wick

A small wick can cause tunneling, weak flame, and poor scent throw.

5. Using Too Large a Wick

A large wick can cause black smoke, high flame, mushrooming, and overheating.

6. Ignoring Fragrance Load

Fragrance oil affects burn performance. Retest wick after changing fragrance percentage.

7. Adding Too Much Mica or Powder

Heavy additives can clog the wick and create smoke or poor burn.

8. Not Trimming Wick Before Test

An untrimmed wick can give false smoke and flame results.

9. Testing in Airflow

Fans, windows, and AC airflow make burn results inaccurate.

10. Selling Without Burn Test

Every candle should be burn tested before selling to customers.

Expert Tips

FAQ

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Final Words

A candle wick size chart is a useful beginner starting point, but it is not the final answer. The correct wick depends on jar diameter, wax type, fragrance load, dye, additives, cure time, and burn testing.

For professional candle making, always test wick sizes before selling. For candle wicks, wax, jars, fragrance oils, colors, thermometers, molds, wick accessories, and packaging supplies, visit Jindeal.com.