Epoxy resin cost calculator
Enter the epoxy you need, the size of one kit and its price. You get the kits to buy, the total cost, the price per litre and what is left over.
Result
Kits to buy
Total cost
Price per litre
Price per US gallon
Left over
US gal
- These kits cover the amount with almost nothing to spare. If the volume you entered has no waste allowance in it, you may run short.
| Epoxy needed ÷ size of one kit | 2 |
|---|---|
| Kits to buy = that number rounded up to whole kits | 2 |
| Epoxy bought = kits × size of one kit | 3.00 US gal |
| Left over = epoxy bought − epoxy needed | 0.00 US gal |
| Total cost = kits × price of one kit | 200.00 |
| Price per litre = kit price ÷ kit size in litres | 17.61 |
| Price per US gallon = kit price ÷ kit size in US gallons | 66.67 |
| Price per US fluid ounce = kit price ÷ kit size in US fluid ounces | 0.52 |
How it works
Epoxy is sold in whole kits, so the volume you need is divided by the size of one kit and rounded up. The total cost is that number of kits times the kit price. The price per litre and per gallon come from the kit alone, which makes two kit sizes easy to compare.
Formula
Kits = epoxy needed ÷ kit size, rounded up to a whole number. Total cost = kits × kit price. Left over = kits × kit size − epoxy needed. Price per litre = kit price ÷ kit size in litres; price per US gallon = kit price ÷ kit size in US gallons. One US gallon is 3.785 litres and 128 US fluid ounces.
Worked example
The calculator opens with this example; the result above is computed from it.
| Input | Value |
|---|---|
| Epoxy needed | 3 US gal |
| Size of one kit | 1.5 US gal |
| Price of one kit | 100 |
| Kits to buy | 2 |
| Total cost | 200.00 |
| Price per litre | 17.61 |
| Price per US gallon | 66.67 |
| Left over | 0.00 US gal |
3 US gal of epoxy from kits of 1.5 US gal at 100 each takes 2 kits and costs 200.00. That is 17.61 per litre or 66.67 per US gallon, with 0.00 US gal left over.
Common cases
| Case | Starting values | Kits to buy | Total cost | Price per litre | Price per US gallon | Left over |
|---|---|---|---|---|---|---|
| River table needing three gallons, kits of one and a half gallons (example price) | Epoxy needed 3 US gal; Size of one kit 1.5 US gal; Price of one kit 100 | 2 | 200.00 | 17.61 | 66.67 | 0.00 US gal |
| Large table needing seven gallons, five-gallon kits (example price) | Epoxy needed 7 US gal; Size of one kit 5 US gal; Price of one kit 250 | 2 | 500.00 | 13.21 | 50.00 | 3.00 US gal |
| Small project needing a little over half a gallon, quart kits (example price) | Epoxy needed 0.6 US gal; Size of one kit 0.25 US gal; Price of one kit 50 | 3 | 150.00 | 52.83 | 200.00 | 0.15 US gal |
| Countertop needing just over two gallons, one-gallon kits (example price) | Epoxy needed 2.2 US gal; Size of one kit 1 US gal; Price of one kit 80 | 3 | 240.00 | 21.13 | 80.00 | 0.80 US gal |
Questions and answers
How many epoxy kits do I need?
Divide the epoxy the project needs by the size of one kit and round up, because kits are not sold in parts. A project needing 3 US gal with kits of 1.5 US gal takes 2 kits.
How much epoxy will be left over?
Whatever the kits hold beyond what the project needs. Needing 2.2 US gal and buying kits of 1 US gal means 3 kits and 0.80 US gal left over.
Assumptions and limits
- The kit size is the mixed amount, resin and hardener together. Kits sold by weight have to be converted to volume first; the mix ratio calculator does that with the densities from the data sheet.
- The price is a plain number. The calculator does not convert currencies or add tax and shipping.
- Only whole kits of one size are counted. Mixing two kit sizes can be cheaper; compare them by their price per litre or gallon.
- No waste allowance is added here. Work out the volume, with waste, in the volume or coverage calculator first.
- The prices in the examples are made-up round numbers to show the working. They are not market prices.
The result is an estimate for planning, not professional advice.
Sources
- Woodworking Advisor: how much does epoxy cost per ounce - kit price divided by kit size, three worked figures (32 oz at 50, one gallon at 80, five gallons at 250)retrieved 2026-10-12
- Wikipedia: Gallon (the US gallon is legally defined as exactly 231 cubic inches, i.e. 3.785411784 litres; 128 US fluid ounces; four quarts)retrieved 2026-10-12
- WiseBond DEEP Pour epoxy technical data sheet: sold as a 1.5-Gallon Kit (two to one ratio)retrieved 2026-10-12
- Omni Calculator, epoxy calculator: a 96 x 48 x 1 in table needs about 19.95 gallonsretrieved 2026-10-12
Last updated:
Method in depth: Epoxy kit count and unit price: how many kits a project needs
Cite this page: Resin Math, “Epoxy resin cost calculator”, https://resin-math.pages.dev/epoxy-mixing/epoxy-resin-cost-calculator/ (updated 12 October 2026).
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