Enter the change in weight of the candle (oz) and the total burn time (hrs) into the Calculator. The calculator will evaluate the Candle Burn Rate. 

Candle Burn Rate Formula

CBR = CW / BT

Variables:

  • CBR is the Candle Burn Rate (oz/hr)
  • CW is the change in weight of the candle (oz)
  • BT is the total burn time (hrs)

To calculate Candle Burn Rate, divide the change in weight of the candle by the total burn time.

How to Calculate Candle Burn Rate?

The following steps outline how to calculate the Candle Burn Rate.


  1. First, determine the change in weight of the candle (oz). 
  2. Next, determine the total burn time (hrs). 
  3. Next, gather the formula from above = CBR = CW / BT.
  4. Finally, calculate the Candle Burn Rate.
  5. After inserting the variables and calculating the result, check your answer with the calculator above.

Example Problem : 

Use the following variables as an example problem to test your knowledge.

change in weight of the candle (oz) = 5

total burn time (hrs) = 2

Frequently Asked Questions

What factors can affect the Candle Burn Rate?

The Candle Burn Rate can be affected by several factors including the type of wax used, the presence and type of fragrance, wick size, and environmental conditions such as air flow and room temperature.

How can I make my candles burn longer?

To make candles burn longer, ensure you’re using the right wick size for your candle’s diameter, use high-quality wax, and avoid overloading your candle with fragrance oils. Keeping your wick trimmed to about 1/4 inch also helps in burning efficiently.

Is it possible to calculate the Candle Burn Rate before actually burning the candle?

While you can estimate the Candle Burn Rate based on the type of wax, wick, and fragrance used, actual burn rate can only be accurately determined by burning the candle under controlled conditions and measuring the results.

Why is knowing the Candle Burn Rate important?

Knowing the Candle Burn Rate is important for several reasons. It helps in estimating how long a candle will last, ensuring the candle burns efficiently and safely, and can also be a critical factor in candle making and pricing for businesses.