Epoxy Calculator

Epoxy resin is a versatile material widely used in woodworking, art, flooring, and DIY projects. However, one of the most common challenges for beginners and professionals alike is figuring out how much epoxy resin is needed for a specific project. Using too little can leave gaps, while using too much leads to unnecessary waste and cost.

That’s where the Epoxy Resin Calculator comes in. This powerful online tool makes it simple to determine the exact amount of resin and hardener required for your project. By entering basic dimensions (length, width, and thickness), your mixing ratio, and price per kilogram, the calculator instantly gives you accurate results for resin and hardener quantities, total weight, estimated liters, and even cost.

Why Use an Epoxy Resin Calculator?

Manually calculating epoxy requirements can be confusing because of variables like resin-to-hardener ratios, density, and potential wastage. The calculator removes the guesswork and ensures:

• ✅ Accuracy – Get precise resin and hardener measurements.
• ✅ Cost efficiency – Estimate total cost before purchasing materials.
• ✅ Time savings – Avoid lengthy manual calculations.
• ✅ Reduced waste – Add the recommended 10% buffer for mixing and spillage.

Whether you’re coating a wooden table, casting art molds, or sealing floors, this calculator ensures your project is smooth, efficient, and budget-friendly.

How to Use the Epoxy Resin Calculator (Step-by-Step)

Using the calculator is quick and beginner-friendly. Follow these steps:

1. Enter the length (cm): Measure the length of your surface or mold in centimeters.
2. Enter the width (cm): Add the width dimension of the project.
3. Enter the depth/thickness (mm): Input how thick you want your epoxy layer to be, in millimeters.
4. Select the resin-to-hardener ratio: Choose from common ratios like 1:1, 2:1, 3:1, or 4:1, depending on your epoxy brand.
5. Enter epoxy price per kg ($): Input the cost of epoxy resin per kilogram to get an estimated total project cost.
6. Click “Calculate”: The tool processes your data and provides exact results, including:
   • Total epoxy volume (liters)
   • Resin part A (kg)
   • Hardener part B (kg)
   • Total weight (kg)
   • Estimated price ($)
7. Copy or share results: You can copy the results to your clipboard or share them with a friend or colleague.

Practical Example

Imagine you’re making a river table measuring:

• Length: 120 cm
• Width: 50 cm
• Depth: 20 mm
• Resin-to-hardener ratio: 2:1
• Epoxy price: $12 per kg

Results from the calculator:

• Volume required: ~120,000 cm³
• Total epoxy needed: ~13.2 L
• Resin (Part A): ~8.8 kg
• Hardener (Part B): ~4.4 kg
• Total weight: ~13.2 kg
• Estimated price: ~$158

This example shows how easily the tool saves you from miscalculations and helps you budget before buying epoxy.

Key Features of the Epoxy Resin Calculator

• Accurate volume calculation (cm³ and liters)
• Automatic resin-to-hardener split
• Cost estimation based on price/kg
• Progress bar for a smooth calculation experience
• Copy & share options for results
• Tips section to guide best mixing practices

Benefits of Using This Calculator

• Eliminates math errors when calculating resin requirements.
• Works for small art projects and large-scale woodworking alike.
• Helps plan bulk purchases for professional projects.
• Ensures you don’t run out of epoxy mid-project.
• Provides better budgeting and cost control.

Pro Tips for Best Results

• Always buy at least 10% extra epoxy to cover spills and losses.
• Mix resin and hardener thoroughly according to the ratio.
• Check the manufacturer’s density specifications, as values may vary.
• Avoid mixing large batches at once to prevent overheating.
• Work in a dust-free, well-ventilated environment for best curing.

Use Cases

This tool is ideal for:

• Woodworking projects – River tables, countertops, furniture finishes.
• Art & crafts – Jewelry molds, resin coasters, artwork.
• Flooring applications – Epoxy floor coatings in garages, basements, and studios.
• Marine projects – Boat coatings, surfboards, and waterproof sealing.

Frequently Asked Questions (FAQs)

Here are 20 common questions and answers about epoxy resin and the calculator:

1. What is an epoxy resin calculator?
   A tool that calculates the exact amount of resin and hardener required for your project.
2. Why do I need this calculator?
   To avoid running out of epoxy or overspending on unnecessary materials.
3. What dimensions do I need to input?
   Length, width, and depth/thickness of your project.
4. Can I use inches instead of centimeters?
   Currently, the calculator accepts cm and mm. You can convert inches to cm before input.
5. What resin-to-hardener ratios are supported?
   1:1, 2:1, 3:1, and 4:1 ratios.
6. How accurate is the cost estimation?
   Very accurate if you enter the correct price per kg from your supplier.
7. Does it consider epoxy density?
   Yes, it assumes an average density of 1.1 g/cm³.
8. Why does the calculator add 10% extra?
   To account for spillage, wastage, and mixing losses.
9. Can I use it for deep pours?
   Yes, just enter the desired depth/thickness.
10. Does it work for small projects like jewelry?
    Absolutely. It’s suitable for projects of all sizes.
11. What happens if my resin brand has a different density?
    Use the calculator as a guide, but adjust slightly based on the brand’s technical sheet.
12. Is the calculator free to use?
    Yes, it’s completely free.
13. Can I share my results with others?
    Yes, you can copy or share results directly.
14. Do I need to install anything?
    No, it works directly online.
15. What if I make a mistake in inputting numbers?
    Simply hit the “Reset” button and start again.
16. Does it work on mobile devices?
    Yes, the calculator is mobile-friendly.
17. Can it estimate curing time?
    No, curing time depends on the epoxy brand and environment.
18. What’s the best way to measure depth?
    Use a caliper, ruler, or digital measuring tool for accuracy.
19. Is this tool useful for flooring projects?
    Yes, it’s perfect for estimating resin needs for epoxy flooring.
20. Does it support currency conversion?
    No, you enter your price in your preferred currency.

Final Thoughts

The Epoxy Resin Calculator is a must-have tool for anyone working with resin—whether you’re a beginner DIY artist or a professional woodworker. By removing the guesswork, it ensures you purchase the right amount of materials, stay on budget, and achieve high-quality results without waste.

Next time you start an epoxy project, let the calculator do the math for you—so you can focus on creativity, not calculations.