3:1 Resin Ratio Calculator: Easy Resin & Hardener Calculation

October 20261 min read

October 2026

A 3:1 ratio means 3 parts resin to 1 part hardener, when measured according to the manufacturer's specified method.

Fusion Flex 3:1 is designed for casting and deeper resin projects.

Simple 3:1 Calculations

  1. 100g total: 75g resin + 25g hardener.
  2. 200g total: 150g resin + 50g hardener.
  3. 400g total: 300g resin + 100g hardener.
  4. 800g total: 600g resin + 200g hardener.
  5. 1kg total: 750g resin + 250g hardener.

Always calculate before mixing using the Fusion Resin Calculator.

Which Fusion Resin Uses 3:1?

Fusion Flex 3:1 Resin is designed for deep casting, flower preservation and larger mould projects.

Beginners can also consider the Fusion Starter Bundle to explore both resin types.

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