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Resin Volume Calculator

Calculate resin and hardener amounts for molds by shape and dimensions. Supports multiple mix ratios for 2-part systems.

Inputs

cm

Length for rectangular, diameter for cylindrical/sphere/dome

cm

Only used for rectangular molds

cm

Height for rectangular/cylindrical molds

%

Percentage of mold volume occupied by inclusions (flowers, objects, etc.)

Results

Total Resin Volume

150 ml

Resin Part (A)

75 ml

Hardener Part (B)

75 ml

Total Weight165 g

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Tips

1
Always mix by volume, not weight, unless your resin specifically calls for weight ratios.
2
Add 10% extra to your calculation — resin sticks to mixing cups and tools.

Open formula

Volume = Shape Formula (L×W×H, π××h, etc.)
Resin Part = Volume × Ratio / (Ratio + 1)
Hardener = Volume - Resin Part

Calculates mold volume by shape geometry, then splits into resin and hardener portions by mix ratio.

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