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A browser-based resin volume & weight calculator tool. No data sent to server.

📘 How to Use

  1. Select the shape of your mold (e.g., Cuboid, Cylinder)
  2. Enter the dimensions of the mold in millimeters (mm)
  3. Input your resin's specific gravity and select its type (1-Part or 2-Part)
  4. View the required total amount in grams and milliliters

Resin Volume & Weight Calculator

Resin Volume & Weight Calculator

A browser-based resin volume & weight calculator tool. No data sent to server.

*Typical UV/Epoxy resins: ~1.1-1.2

Total Required Amount

Weight
0.00 g
Volume
0.00 ml

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Article

Resin Volume & Weight Calculator｜Accurately Calculate Epoxy & UV Resin Amounts

This tool helps resin artists and DIY crafters accurately calculate the amount of resin needed to fill any mold. Avoid waste and mixing errors by getting precise volume (ml) and weight (g) measurements for your project, including breakdown for 2-part epoxy resins.

💡 Tool Overview

  • Supports Multiple Mold Shapes: Instantly calculate the volume for common shapes including cuboids (squares/rectangles), cylinders, spheres, and hemispheres.
  • Works for 1-Part & 2-Part Resins: Whether you're using a single-component resin (like UV resin) or a two-part system (epoxy), this calculator has you covered. For 2-part resins, it automatically calculates the required weight for the resin (Part A) and hardener (Part B) based on your specified mix ratio.
  • Calculates by Volume and Weight: Get results in both milliliters (volume) and grams (weight). The calculation accounts for the specific gravity of your resin for maximum accuracy.
  • Real-time Results: The required amounts update instantly as you adjust dimensions, specific gravity, or resin type, making it easy to experiment with different sizes.

🧐 Frequently Asked Questions

Q. What is specific gravity and why is it important?

A. Specific gravity is the ratio of a substance's density compared to the density of water. For resin, it's a crucial value that allows the calculator to accurately convert the mold's volume (in ml) into the required weight (in grams). Most common epoxy and UV resins have a specific gravity between 1.1 and 1.2. Checking your resin's technical data sheet for the exact value will give you the most precise results.

Q. My resin's mix ratio is by volume, but the calculator provides a breakdown by weight. Can I still use it?

A. This tool is optimized for mixing by weight, which is the industry standard for accuracy. If your resin specifies a ratio by volume (e.g., 1:1 by volume), you can still use this tool to find the total volume (ml) needed. Then, you would measure your Part A and Part B separately by volume. However, for critical applications and to prevent curing issues, mixing by weight with a digital scale is highly recommended.

📚 Helpful Knowledge: Mixing Resin by Weight vs. Volume

While some resin kits provide ratios by volume for convenience, mixing by weight is almost always more accurate. Here's why: The two components of an epoxy system—the resin (Part A) and the hardener (Part B)—often have slightly different densities.

If you measure by volume, you might get an incorrect ratio of the actual molecules needed for a complete chemical reaction. This can lead to soft spots, a sticky finish, or a complete failure to cure. By measuring each part by weight, you ensure the precise chemical ratio is met, regardless of density differences, leading to a stronger, more reliable final product. A simple digital kitchen scale is an essential tool for any serious resin artist.