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Resin & Epoxy Cost Calculator

Free resin and epoxy cost calculator. Enter mold dimensions (rectangular or cylinder), resin price per gallon, density, waste percentage, additives, and amortized mold cost; outputs the exact volume, weight, and total cost per pour.

कब उपयोग करें

Use before pricing a resin piece for sale, or when comparing whether a cheaper bulk resin or a different mold-amortization schedule meaningfully changes your per-piece cost.

तुलना

Like the 3D Print Cost & Profit Estimator, this converts a physical volume into a material cost, but resin's waste percentage and mold amortization play the role that 3D printing's failure buffer and printer wear play.

Enter your values below. Calculations run locally as you type.

यह कैसे काम करता है

Volume is computed from mold dimensions — length × width × depth for rectangular molds, or π × (diameter ÷ 2)² × depth for cylinders — converted from cubic inches to gallons by dividing by 231.

A waste/cure-loss percentage is added on top to cover mixing cup residue and stir-stick drag, then converted to weight using resin density in lb/gallon.

Total cost = resin cost (volume × price per gallon) + flat additive/pigment cost + mold cost amortized over its expected number of uses.

अक्सर पूछे जाने वाले प्रश्न

How do I measure a mold's volume in practice?

Fill the empty mold with water and measure the poured volume in a graduated cup, or use the dimension formula this calculator applies — length × width × depth for rectangular molds, or π × (diameter ÷ 2)² × depth for cylinders.

Why does real resin usage always run a bit more than the "gallon price" suggests?

Mixing cup residue, stir-stick drag, and trimmed overflow all add loss beyond the mold's exact volume. The waste/cure-loss percentage field bakes that overage into the total.

Do 1:1 vs 2:1 epoxy mix ratios change my cost?

The mix ratio doesn't change the poured volume, but different ratios come in differently sized part-A/part-B bottles, which can shift your effective price per gallon — enter the actual price you pay per gallon of combined mixed resin.

व्यावहारिक उदाहरण

इनपुट

Rectangular mold 6" × 4" × 1", $45/gallon resin, 9.1 lb/gal density, 3% waste, $1.50 additive, $20 mold amortized over 50 uses.

आउटपुट

Volume 0.107 gal (24 in³) → total cost $6.72.

24 cubic inches converts to 0.104 gallons, plus 3% waste brings it to about 0.107 gallons weighing roughly 0.97 lb. Resin cost is $4.82, plus $1.50 additive and $0.40 mold-per-use ($20 ÷ 50 uses), for a total pour cost of about $6.72.

सामान्य गलतियाँ

  • Volume formulas assume a filled solid — subtract cavity volume yourself if the mold has voids or inserts.
  • Resin density varies by brand and formulation — check your specific product's data sheet rather than trusting the default.
  • Doesn't include cure time or labor — add that separately if you charge for your working time.

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