Choosing the right ink system for your fountain pen can be confusing, especially with so many brands and types available. Some brands use standard international sizes, while others are proprietary, which means they are only compatible with that particular brand. This guide outlines the key differences between cartridges and converters, along with a comprehensive compatibility table to help you find the perfect fit for your fountain pen.
Cartridges vs. Converters: What's the Difference?
Cartridges are pre-filled ink containers that easily snap into your fountain pen. They are convenient, mess-free, and perfect for beginners or those who prefer low-maintenance writing tools. However, they are single-use and not very sustainable. Cartridges are ideal for travel and quick refills but may limit your ink options to specific brands or compatible styles. Many brands use proprietary cartridges, so you are limited to the colours in their range.
Converters are refillable ink reservoirs that allow you to use bottled ink from any brand with your pen. While they require more effort to fill and clean, converters open up a world of ink colour options and are generally more cost-effective in the long run. They are an excellent choice for those who enjoy experimenting with different ink types and colours.

Cartridge Benefits
- Convenience: Cartridges are quick and easy to install, making them perfect for everyday use and travel.
- Clean and Portable: Since cartridges are sealed, they minimise ink spills and are great for on-the-go use.
- Minimal Maintenance: Once a cartridge runs out, simply replace it — no deep cleaning required.
Converter Benefits
- Ink Variety: Converters unlock endless possibilities with bottled inks, allowing you to explore a wide range of colors and brands.
- Cost-Effective: Bottled ink is generally more economical per milliliter than cartridges, making converters ideal for frequent writers.
-
Eco-Friendly: Converters reduce plastic waste since they are reusable, while cartridges are single-use.
Fountain Pen Cartridge & Converter Compatibility
The table below outlines popular fountain pen brands and their compatible cartridge/converter systems:
|
Tips for Choosing the Right System
By understanding your fountain pen's compatibility and ink options, you can enhance your writing experience and enjoy the full potential of your favourite pen. If you travel frequently or prefer minimal maintenance, cartridges may suit your needs. Or if you enjoy exploring a variety of ink colours or write extensively, a converter is ideal. Whether you're a seasoned collector or just starting out, the perfect pen and ink combination is out there waiting for you. Happy writing!
Questions? We’d love to hear from you, so don’t be shy! Contact us on Facebook, Instagram or via email at info@bookbindersdesign.com.au