Resin Calculator
How much epoxy resin do you need? This resin calculator computes the total volume for any casting or coating project and splits it into parts A and B using your chosen mix ratio. It works as an epoxy resin calculator in ml, an epoxy resin calculator in grams, and a traditional fluid-ounce estimator, so you can measure resin however your supplier's bottle is labeled.
Resin Calculator for Casting vs Coating
- Casting / mold: the full volume of the cavity (length x width x depth). Deep-pour resins usually mix 2:1.
- Coating / flood: thin layer over a surface. Area x thickness (1/8 inch typical).
Formula Behind an Epoxy Resin Calculator
The math is the same for both modes: Volume = Length x Width x Depth. Then convert:
- Cubic inches to fluid ounces: multiply by 0.554
- Fluid ounces to milliliters: multiply by 29.57
- Milliliters to grams (at resin density 1.1 g/ml): multiply by 1.1
This calculator does all of these at once and outputs in ml, fl oz, and grams.
2 1 Resin Calculator Walkthrough
For a 2 1 resin calculator (deep-pour 2:1 epoxy), after computing total volume, split it two-thirds Part A (resin) and one-third Part B (hardener) by volume. A 100 ml total means 66.7 ml Part A and 33.3 ml Part B. The calculator handles 1:1, 2:1, 3:1, 4:1, and 5:1 ratios automatically.
Epoxy Resin Calculator App
This resin calculator app functionality works offline in your browser. Enter your piece dimensions and mix ratio and get an instant reading. Popular epoxy resin calculator app alternatives include Stone Coat Epoxy's mobile calculator and the ArtResin online tool. Both use the same underlying volume formula as this calculator.
Epoxy Resin Calculator in ml
An epoxy resin calculator in ml is essential for metric-unit bottles (most European and Asian brands ship in ml). A 12 x 12 inch coaster with a 1/8-inch coating layer needs:
- Volume = 12 x 12 x 0.125 = 18 cu in
- = 18 x 16.387 ml/cu in = 295 ml total resin
- At 1:1 mix: 147.5 ml Part A + 147.5 ml Part B
Epoxy Resin Calculator in Grams
An epoxy resin calculator in grams is useful for kitchen scales. Epoxy resin density is 1.1 g/ml, so 295 ml = 325 g total. At 1:1: 162.5 g Part A + 162.5 g Part B. For critical ratios (like 3:1 or 4:1 tabletops), always measure by volume not by weight, because Part A and Part B have slightly different densities.
Epoxy Resin Calculator in cm
For a resin calculator in cm metric mode, switch the length and width units to cm and depth to mm. A 30 cm x 30 cm piece at 3 mm thickness:
- Volume = 30 x 30 x 0.3 = 270 cu cm = 270 ml = 297 g at 1.1 g/ml density
Common Project Resin Amounts
| Project | Dimensions | Resin Needed |
|---|---|---|
| Coaster | 4 x 4 in x 1/4 in | 4 fl oz (118 ml) |
| Serving tray coating | 12 x 20 in x 1/8 in | 17 fl oz (500 ml) |
| Bar top | 24 x 96 in x 1/8 in | 133 fl oz (3.9 L) |
| Deep-pour river table | 24 x 72 x 1.5 in (void only) | 1,437 fl oz (42 L) |
| Casting pendant (2 in diameter, 1/2 in deep) | cylinder | 0.87 fl oz (26 ml) |
Genshin Resin Is Different
Searches for "resin calculator genshin" or "resin calculator in genshin" are about the Genshin Impact game, where "resin" is a stamina currency that regenerates at 1 per 8 minutes (resin recharge rate). A genshin resin recharge rate calculator is a different tool. This page is for physical epoxy resin, not in-game resin. For the Genshin resin calculator you want the HoYoLAB tool or a fan-made wiki calculator.
How to Avoid Running Out of Resin
Always add a 10% waste factor. Resin that cures in the mixing cup (cling loss) and resin dripping off stir sticks together cost you about 10% of every batch. For beginners, use 15%. Running out mid-pour ruins the level coat and forces you to wait for part A to cure before adding a fresh mix.