Epoxy Resin Calculator
Mixing too little epoxy means a second batch with visible pour lines. Mixing too much wastes $50+ per gallon. This epoxy resin calculator tells you exactly how much resin plus hardener to mix for a table top, river table, tumbler, or flood coat, with results in millilitres, litres, grams, fluid ounces, and US gallons. Works for rectangular and round projects with any pour thickness.
How Much Epoxy Resin Do I Need?
Epoxy volume equals surface area multiplied by pour thickness. For rectangular work (table tops, bar tops, counters): Volume = Length x Width x Thickness. For round work (coasters, bottle tops, circular trays): Volume = pi x (Diameter / 2)^2 x Thickness.
Every pour has waste: mixing cup residue, drips, run-off at the edges, and the small amount that self-levels past the intended thickness. Add 10-15% to the raw volume for safety. Deep pour and river tables run closer to 5-10% waste because the geometry is contained.
Epoxy Resin Calculator in ML, Grams, Litres, OZ, CM
The table below is how the calculator converts between units. One US gallon equals 3,785.41 mL (3.785 litres), 128 fl oz, and 231 cubic inches. Cured epoxy density is about 1.1 g/cm^3, so volume in mL approximately equals weight in grams times 0.91.
| Unit | Conversion |
|---|---|
| Epoxy resin calculator in ml | mL = volume (cm³) |
| Epoxy resin calculator litres | L = mL / 1000 |
| Epoxy resin calculator in grams | g = mL x 1.1 (density of cured epoxy) |
| Epoxy resin calculator in oz | fl oz = mL / 29.574 |
| Epoxy resin calculator cm | dimensions entered in cm convert to in automatically |
| Gallons | 1 gal = 3785.41 mL = 231 cu in |
Standard Pour Thicknesses
- Seal coat: 1/16" (1.6 mm). First thin layer applied to raw wood to seal pores before flood coat. Covers about 24 sq ft per gallon.
- Table top / flood coat: 1/8" (3 mm). Standard pour on a finished surface. Covers about 12 sq ft per gallon.
- Deep pour / casting: 1-4" (25-100 mm). Requires deep-pour formulation; standard table top epoxy cracks or exotherms above 1/4" per pour. One gallon of deep pour fills about 13 x 13 x 1" in a single lift.
- River table: typically 1.5-2" deep in the channel. Calculate only the channel volume, not the entire table surface.
Table Top Epoxy Resin Calculator Notes
For a table top epoxy resin calculator use, most coating epoxies are 1:1 by volume resin to hardener. A 1 gallon kit is 0.5 gallon Part A plus 0.5 gallon Part B. A 2 gallon kit is 1 gallon of each. Never adjust mix ratio to "slow down cure," that is the number-one cause of sticky, never-hardening epoxy.
Free Epoxy Resin Calculator in ML
This page is a free epoxy resin calculator in ML and every other unit you need. No login, no email, no paywall. Dimensions and waste factor live in your browser and reset when you close the tab.
River Table Example
A 72" x 36" river table with a 10"-wide irregular river channel 2" deep contains approximately 72 x 10 x 2 = 1,440 cubic inches of epoxy. That is 6.2 gallons (23.6 L) before waste, or about 7 gallons ordered. Buy deep pour epoxy, not table top, and pour in lifts no thicker than the manufacturer's maximum (usually 1.5-2").
Epoxy Resin Volume Calculator Edge Cases
- Live edge slabs with voids: measure the largest voids separately and add that volume.
- Dams / tape walls: if you pour over the edge, add 10-15% extra for the edge sheet.
- Raised pour (flood coat that self-levels): use 1/8" as the final thickness; the calculator already accounts for self-leveling.
- Tumbler epoxy: most tumbler coats use 1-2 oz per tumbler, far less than a flat project.