Optional. Mica powder or paste, often 1 to 6 %; stay under the data sheet’s maximum.
Estimates. Follow your product’s technical data sheet: its mix ratio, pour depth and cure time win. Work with ventilation, nitrile gloves and eye protection.
How it works
Pick the shape, enter the size and the depth, and the mix ratio from your epoxy’s label. You get the total to mix, Part A and Part B, in fl oz, cups, quarts and gallons, plus ml and liters.
Example: a 24 × 48 in table top at 1/8 in deep is 24 × 48 × 0.125 = 144 in³ = 79.8 fl oz (0.62 gal, 2.36 L). At 2:1 by volume that is 53.2 fl oz of Part A and 26.6 fl oz of Part B. With 10 % extra, mix 87.8 fl oz in all.
For a river table, set the share of the top that is resin under More options. Mixing by weight? Use the resin mix ratio calculator, or set the density to get grams.
Frequently asked questions
How much epoxy do I need for a table top?
Multiply length × width × depth in inches to get cubic inches, then × 0.554 for fl oz or ÷ 231 for gallons. A 24 × 48 in top at 1/8 in is 144 in³ = 79.8 fl oz, about 0.62 gal.
How much epoxy for a river table?
Only the river gets resin. A 72 × 20 in slab poured 1.5 in deep with the river over 30 % of the top: 72 × 20 × 1.5 × 0.30 = 648 in³ = 359.1 fl oz = 2.81 gal, before the extra.
How much does 1 gallon of epoxy cover?
A US gallon is 231 in³. At 1/8 in deep it covers 1,848 sq in, about 12.8 sq ft; at 1/16 in about 25.7 sq ft.
How much extra epoxy should I mix?
About 10 % for what stays in the cup and drips over the edges. Add more for raw wood that drinks resin, live edges and the first seal coat.
Can I pour it all in one go?
Only up to the maximum pour depth on your product’s data sheet. Table-top epoxies are usually poured 1/8 to 1/4 in at a time, deep-pour epoxies thicker. Split a deeper pour into layers and mix each layer fresh.