Liters to kilos of epoxy resin
Manufacturers sell resin by weight and molds are measured by volume, so sooner or later you have to convert. Here is the converter, the quick table and the formula to do it in your head without mistakes.
Use the A+B mix density from the technical datasheet, not part A alone.
The formula: kilos = liters × density
Multiply the liters by the density of the mix in g/ml and you get kilos: 2.5 liters at 1.10 g/ml is 2.75 kg. For the reverse, divide: 10 kg at 1.10 g/ml is 9.1 liters. The exact density is in the technical datasheet of your resin; if you do not have it, 1.10 g/ml is a safe reference for casting epoxy.
Why a liter does not weigh a kilo
Epoxy resin is denser than water: part A sits around 1.10-1.15 g/ml, the hardener around 0.95-1.00 g/ml, and the mix lands at an intermediate value, usually 1.05-1.20 g/ml. That is why a 10 kg kit does not fill 10 liters of mold: it fills about 9. Always use the density of the A+B mix, not part A alone.
Kits in kilos, molds in liters: matching them
The volume of your piece (length × width × depth) gives you liters; the kit you buy comes in kilos. Convert the volume to kilos with the density and add a 10% waste margin. If you also need the A:B breakdown in grams and the layer plan, the calculator does it with the real density of each product.
In context: epoxy resin calculator
Quick table (mix at 1.10 g/ml)
- 1 liter
- 1.10 kg
- 2.5 liters
- 2.75 kg
- 5 liters
- 5.50 kg
- 10 liters
- 11.0 kg
- 1 kg
- 0.91 L
- 10 kg
- 9.09 L
Note: Values at the 1.10 g/ml reference. The converter above lets you use the exact density of your resin.
Want the exact amount for your piece, with the A:B ratio and layer plan?
Calculate my full mixFrequently asked questions
How many kilos is 10 liters of epoxy resin?
11 kg at the 1.10 g/ml reference. Depending on the formulation (1.05-1.20 g/ml), between 10.5 and 12 kg.
How many liters is 10 kg of resin?
About 9.1 liters at 1.10 g/ml (10 ÷ 1.10). The real range is 8.3 to 9.5 liters depending on the density of your mix.
How many ml in a kg of resin?
About 909 ml at 1.10 g/ml: divide the grams by the density (1,000 ÷ 1.10). At 1.20 g/ml it is 833 ml.
Which density should I use: part A or the mix?
The A+B mix density from the technical datasheet. Part A alone is usually denser than the mix and would skew the calculation.