3:1 Resin Ratio Calculator: Easy Resin & Hardener Calculation
October 20261 min read
October 2026Share
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
- 100g total: 75g resin + 25g hardener.
- 200g total: 150g resin + 50g hardener.
- 400g total: 300g resin + 100g hardener.
- 800g total: 600g resin + 200g hardener.
- 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.