How to use this calculator
Start by selecting your project type. Table tops, river tables, countertops, art pieces, castings, and floor coatings each use different pour depths and epoxy formulations, so the calculator adjusts its recommendations based on what you are making.
Enter the dimensions of your project area. For rectangular surfaces, provide the length, width, and desired pour depth. For round or irregular shapes, the calculator helps you estimate the equivalent surface area so the volume calculation stays accurate.
Choose your mix ratio. Most table top epoxies use a 1:1 ratio by volume, while many deep pour products use 2:1. The calculator splits the total volume into the correct amounts of resin and hardener based on the ratio you select.
The results show total mixed volume, individual resin and hardener amounts, how many pour layers you will need based on maximum pour depth, and an estimated cost at three price tiers. Use these numbers as your shopping list so you buy enough product without over ordering.
Choosing the right epoxy for your project
Table top epoxy and deep pour epoxy are not interchangeable. Table top formulas cure faster and produce a glass clear, hard surface, but they can only be poured in thin layers up to about 1/4 inch at a time. Pouring them thicker generates too much heat during curing, which causes cracking, yellowing, or warping.
Deep pour epoxy is engineered to cure slowly so heat dissipates over a longer period. This allows single pours up to 2 inches thick, which is essential for river tables and thick castings. The trade off is a longer cure time, often 48 to 72 hours before the piece is fully hard.
For most coating projects like bar tops, countertops, and art pieces, table top epoxy is the right choice. For anything that requires filling a void or building up more than 1/4 inch of depth, switch to a deep pour formula and plan your layers accordingly. The calculator factors in maximum pour depth when estimating how many layers your project will need.
Frequently asked questions
How much epoxy resin do I need for a table top?
For a standard table top coating at 1/8 inch thick, calculate the surface area in square inches and multiply by 0.125 inches to get cubic inches, then divide by 231 to convert to gallons. A typical 6 foot by 3 foot table needs roughly 1.4 gallons of mixed epoxy for a single 1/8 inch flood coat.
What is the difference between table top epoxy and deep pour epoxy?
Table top epoxy is designed for thin coats up to 1/4 inch per pour. It cures faster and produces a crystal clear, hard finish. Deep pour epoxy can be poured up to 2 inches thick per layer because it generates less heat during curing. Using table top epoxy for deep pours can cause cracking, yellowing, or excessive heat buildup.
What mix ratio should I use for epoxy resin?
The mix ratio depends on the specific product. Most table top epoxies use a 1:1 ratio by volume. Many deep pour epoxies use a 2:1 ratio (2 parts resin to 1 part hardener). Always follow the manufacturer instructions because incorrect ratios result in sticky, soft, or uncured epoxy that cannot be fixed after pouring.
How much does epoxy resin cost per gallon?
Epoxy resin typically costs between $40 and $90 per gallon depending on quality. Budget brands run about $40 per gallon, mid range products around $65, and premium formulas with UV resistance and low VOC ratings around $90 per gallon. These prices are for the combined resin and hardener kit.