Resin calculator

How to correctly calculate both resin and hardener

When working with casting resin it’s crucial not only to know the exact volume, but also to choose the right material type for the project—whether you’re making jewelry, preserving flowers, coasters, table tops, or art. Each resin has a specific mixing ratio and different viscosity/density, which can affect total yield and the final quality of the cast.

What’s the difference between 1:1, 2:1, 3:1 and other resins?

The mixing ratio defines how many parts of resin you need per one part of hardener. For example, at a 2:1 ratio you’d use 100 g of resin and 50 g of hardener. For weight-based ratios like 100:43.5, you must measure carefully on a scale. The calculator helps automatically based on the volume or total weight you enter.

Different projects = different resins

For jewelry and small casts we recommend thinner resins like Jewela or Subglaso. For flowers & insects choose a crystal-clear, UV-resistant line like Flowera. For artworks & geodes a thicker resin such as Lente Portreto is ideal, while for tables & furniture you’ll find both premium and budget options like Tabula Premium or Tabula Basic.

Why add a 10% reserve?

When pouring into a mold or onto uneven surfaces, you can lose material on container walls, sticks, or the mold itself. A 10% reserve helps prevent running out of mix at the very end. We therefore recommend always including this reserve in your calculations.

Tips for beginners

If you’re new to resin, start with a smaller pack and a straightforward 1:1 ratio. Weigh precisely on a digital scale, mix thoroughly (including sides and bottom), and pour slowly to minimize bubbles. For larger projects consider slower-curing options like DEKORA or TABULA.

Handy accessories

Besides resin and hardener, don’t forget the accessories: measuring cups, mixing sticks, protective gloves, silicone molds or resin pigments. Proper prep and good tools make a huge difference to your results.