Epoxy Resin Calculator
Epoxy Resin Volume Quick Reference
Common project sizes (no waste added)
| Project | Dimensions | Cubic Inches | Fluid Oz | Gallons |
|---|---|---|---|---|
| Coaster (4") | 4" dia × 0.5" | 6.3 | 3.5 oz | 0.03 |
| Cutting Board Coat | 18×12 × 1/8" | 27 | 15 oz | 0.12 |
| Small Mold | 12×6 × 1" | 72 | 40 oz | 0.31 |
| Medium River Table | 48×6 × 1.5" | 432 | 239 oz | 1.87 |
| Large River Table | 72×8 × 2" | 1152 | 638 oz | 4.99 |
| Table Top Flood | 48×24 × 1/8" | 144 | 80 oz | 0.62 |
How We Calculate This
This epoxy resin calculator uses established formulas and industry-standard data to provide accurate estimates.
- Enter your specific values into the calculator fields above
- Our algorithm applies the relevant formulas using your inputs
- Results are calculated instantly in your browser — nothing is sent to a server
- Review the detailed breakdown to understand how each factor affects your result
These calculations are estimates based on standard formulas. For critical decisions, always consult a qualified professional.
How to Convert Oven Recipes to Air Fryer
The calculator determines epoxy volume from project dimensions, then converts cubic inches to fluid ounces for easy measuring.
The basic rule:
- Rectangular: volume = length × width × depth (cubic inches)
- Circular: volume = π × (diameter/2)² × depth
- 1 fluid ounce = 1.805 cubic inches
- Add 5–10% extra for waste, overflow, and mixing loss
- Most epoxy kits use a 1:1 resin-to-hardener ratio by volume
Pour epoxy in layers no thicker than the manufacturer's recommended maximum (usually 1/4" to 2" per pour depending on the product) to avoid overheating. Deep-pour epoxy allows thicker layers.
When Would You Use This Calculator?
This epoxy resin calculator is designed for anyone who needs quick, reliable estimates without complex spreadsheets or professional consultations.
- When you need a quick estimate before committing to a purchase or project
- When comparing different options or scenarios side by side
- When planning a budget and need to understand potential costs
- When you want to verify a quote or estimate you've received from a professional
- When teaching or learning about the concepts behind these calculations
Frequently Asked Questions
How much epoxy do I need for a river table?
Measure the void area: length × average width × depth of the river channel. A 6-foot table with a 6-inch wide, 1.5-inch deep river needs about 324 cubic inches or roughly 180 fluid ounces (1.4 gallons) before waste allowance.
What is the 1:1 ratio for epoxy?
Most art and table epoxy uses a 1:1 mix ratio by volume — equal parts resin and hardener. Some industrial epoxies use 2:1 or other ratios. Always follow the manufacturer's specified ratio for proper curing.
Why does my epoxy overheat?
Epoxy curing is exothermic. Pouring too thick (over the manufacturer's max) traps heat, causing the resin to yellow, crack, or even smoke. Deep-pour epoxy is formulated for thicker layers (2-4 inches) with slower cure times.
How much extra resin should I buy?
Plan for 10-15% extra to account for mixing cups, stir sticks, drips, and uneven surfaces. For river tables with irregular voids, add 20% since the shape is hard to measure precisely.