Grinder comparison
Fellow Opus vs Hario Mini Mill Plus
The Fellow Opus makes the smaller adjustments (23.3 µm a step against 63.2 µm), so it gives finer control between settings. Both reach the same grind sizes, just at different numbers.
Side by side
| Fellow Opus | Hario Mini Mill Plus | |
|---|---|---|
| Setting format | Number | Click |
| Finer direction | Lower numbers | Lower numbers |
| Smallest adjustment | 23.3 µm | 63.2 µm |
| Steps from espresso to French press | 28 | 10 |
| Espresso setting~250 µm | 1.25 | 2 clicks |
| Moka pot setting~350 µm | 2.25 | 3 clicks |
| AeroPress setting~450 µm | 3.25 | 5 clicks |
| V60 setting~560 µm | 4.5 | 7 clicks |
| Chemex setting~700 µm | 6 | 9 clicks |
| French press setting~900 µm | 8.25 | 12 clicks |
| Kalita Wave setting~600 µm | 5 | 7 clicks |
| Cold brew setting~1100 µm | 10.25 | 15 clicks |
| Siphon setting~650 µm | 5.5 | 8 clicks |
This compares how the grinders adjust, not build quality, burr type or price. Settings come from one shared particle-size scale fitted from the Honest Coffee Guide and are a starting point.
Convert between them
- Fellow Opus to Hario Mini Mill Plus
- Hario Mini Mill Plus to Fellow Opus
- Fellow Opus settings
- Hario Mini Mill Plus settings
Questions
Which grinder has finer adjustment, the Fellow Opus or the Hario Mini Mill Plus?
The Fellow Opus makes the smaller adjustments (23.3 µm a step against 63.2 µm), so it gives finer control between settings. Both reach the same grind sizes, just at different numbers.
Can I use the same setting on both?
No. A V60 grind is about 4.5 on the Fellow Opus and 7 clicks on the Hario Mini Mill Plus.