Total fluid ounces
134.65
Free resin material estimator
Epoxy Resin Calculator
Estimate total epoxy volume for pours and coatings, then split the mix into Part A and Part B.
Pour and coating estimator
Epoxy resin inputs
Includes mix-part split
Quick examples
Total gallons
1.0519
Total liters
3.982
Part A
67.32 fl oz
Part B
67.32 fl oz
Coverage basis
12.5 sq ft
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What is an epoxy resin calculator?
An epoxy resin calculator helps you estimate how much mixed epoxy resin you need for a project.
It works for rectangular pours, circular pours, and surface coatings. It also breaks the total into Part A and Part B based on your mix ratio.
This makes it easier to plan batches for projects like tabletops, river tables, bar tops, molds, and seal coats.
Why epoxy resin estimates matter
Epoxy resin is usually mixed in precise ratios and limited working times.
If you underestimate, you may not have enough material to finish the pour. This can lead to visible seams or uneven surfaces.
If you overestimate, you waste material and increase project cost.
A resin calculator helps you balance both by estimating the right volume before mixing.
How the epoxy resin calculator works
The calculator starts by calculating volume based on dimensions and thickness.
It then converts that volume into total epoxy resin required and splits it into Part A and Part B based on the selected mix ratio.
A waste allowance is added to account for losses during mixing, pouring, and spreading.
Dimensions and depth
Length, width, and thickness determine total resin volume.
Volume calculation
The tool calculates resin volume for pours or coatings.
Mix ratio
Splits total resin into Part A and Part B based on ratio like 1:1 or 2:1.
Final estimate
Adds waste and rounds to a practical quantity for batching.
Common epoxy resin applications
| Application | Notes |
|---|---|
| River tables | Deep pours require larger resin volume |
| Bar tops | Usually use coating epoxy with thinner layers |
| Molds and casting | Volume-based estimation is critical |
| Seal coats | Thin layers but still need accurate coverage |
| Art and crafts | Often require precise mixing ratios |
How to use this epoxy resin calculator
- 1
Enter dimensions
Input length, width, and depth of your pour or coating.
- 2
Select mix ratio
Choose the correct Part A to Part B ratio for your resin system.
- 3
Review volume
Check the total resin volume and split between components.
- 4
Plan batching
Use the result to mix manageable batches during your project.
Real-world epoxy considerations
Pour depth limits
Some epoxy systems have maximum pour depths that must be followed.
Mix ratio accuracy
Incorrect ratios can lead to improper curing or soft spots.
Surface prep
Porous or uneven surfaces may absorb more resin than expected.
Bubbles and waste
Mixing, pouring, and finishing can cause small material losses.
Always check the resin manufacturer’s guidelines for curing time, coverage, and maximum pour thickness.
Frequently asked questions
- Why is mix ratio important?
- Because incorrect ratios can prevent proper curing and affect the final finish.
- Should I mix all epoxy at once?
- Not always. Large pours are usually done in smaller batches to avoid overheating and curing issues.
- Do I need extra epoxy?
- Yes. It’s recommended to include a waste allowance for losses and surface absorption.
Use this epoxy resin calculator for accurate pours
This epoxy resin calculator helps you estimate total volume, mix ratio, and batch quantities quickly. Enter your project dimensions above to plan your epoxy pour with confidence.