ResinCraft

Resin Calculator

Accurate epoxy resin calculations made simple.

The fastest way to calculate exactly how much epoxy resin you need for any mold. Pre-loaded ratios for ArtResin, Pro Marine, MAS, EnviroTex and more. Pick a mold shape, enter the dimensions, and get the exact amount of resin and hardener you need — in any unit, for any brand.

What ResinCraft does

7 Mold Shape Calculators

Rectangle, disc, sphere, half-sphere, cylinder, cone, and dome — cover every project you'll ever pour.

Pre-loaded Brand Ratios

ArtResin, Pro Marine, Stone Coat, EnviroTex, MAS, Ecopoxy, TotalBoat — or enter a custom ratio.

Imperial & Metric

Switch between fl oz / mL and inches / cm with a single tap. No manual conversions.

Save & Reuse Projects

Save your mold presets with notes and reload them anytime. Build your personal project library.

Adjustable Safety Margin

Set 0–20% overage to account for waste and spillage. Never run short mid-pour again.

100% Offline

No account, no tracking, no ads. Your data stays on your device. Works anywhere, even in your studio.

Perfect for

Resin jewelry makers — pendants, cabochons, beads
Tumbler crafters
River-table builders
Geode coaster artists
Anyone tired of pouring too much or too little

Important Notice

ResinCraft uses standard geometric formulas and brand-published mix ratios. Always cross-reference your manufacturer's instructions before pouring, and use proper PPE (gloves, ventilation) when working with epoxy.