Resin Calculator

Measure your mould or surface in centimetres (length, width or diameter) and the height or coating thickness in millimetres. Choose the appropriate pour type in the calculator, enter the dimensions and set the mixing ratio A:B exactly as written on your resin. The calculator converts the volume into grams, using typical resin density. For safety, you can add an extra 5–10 % on top.

For decorative coatings (tables, trays, boards, panels, etc.) a layer of about 1.5–2 mm is usually enough. Thinner layers may leave dry spots or visible texture, while significantly thicker layers use more resin and may need longer to cure. For deep-pour projects, always follow the maximum pour depth recommended by your resin manufacturer.

Select Irregular shape in the calculator. Approximate the area by splitting your piece into simple shapes (rectangles, circles) and adding their areas together. Enter the total area in cm² and the average height or thickness. It’s better to add a small extra margin for edges and uneven surfaces, rather than running out of resin in the last seconds of your pour.

1. Check whether your resin should be mixed by weight or by volume. This calculator uses weight.
2. Enter the mixing ratio (for example 100:60) and use the values shown for each component.
3. Weigh Part A and Part B separately on accurate scales, then pour Part B into Part A.
4. Stir slowly for 3–5 minutes, scraping the sides and bottom of the cup to avoid unmixed spots.
5. For critical projects, you can pour the mix into a second clean cup and stir again (“double-cup” method) — this greatly reduces the risk of sticky areas.