The trouble is that many different combinations of espresso machines, grinders, zero points, burr sets, and basket sizes make it almost impossible to provide a Grind Size.
That’s not to say knowing the density can’t help with grind size. If you start recording your ideal grind settings at varying densities, you will find you can significantly reduce your dial-in time.
The one thing I would say is that if you have set all the other parameters correctly (dose, ratio, yield, temperature, and, you know, the time you need to achieve), then you will need to make smaller changes to grind size, making it easier to get your grind setting about right.
You should always taste-test the coffee.
The provided grind setting is in microns for my grinders and 58mm and 54mm VST precision baskets. YMMV !!!
I recommend getting a Kruve Brewler and measuring the microns your grinders produce at each setting. By doing this, you will also find out how consistent your grinder is – whether it produces a range of boulders and fines or not.

| Microns | Monilith | Option-O P64 | Kinu M47 | DF54 |
|---|---|---|---|---|
| 250 | 2.5 | 1 | 1.3.9 | 19.8 |
| 275 | 2.75 | 1.1 | 1.4.4 | 21.1 |
| 300 | 3 | 1.2 | 1.5.0 | 22.4 |
| 325 | 3.25 | 1.3 | 1.5.6 | 23.7 |
| 350 | 3.5 | 1.4 | 1.6.1 | 25 |
| 375 | 3.75 | 1.6 | 1.6.7 | 26.3 |
| 400 | 4 | 1.7 | 1.7.2 | 27.6 |
| 425 | 4.25 | 1.8 | 1.7.8 | 28.9 |
| 450 | 4.5 | 1.9 | 1.8.3 | 30.2 |
| 475 | 4.75 | 2.1 | 1.8.9 | 31.5 |
| 500 | 5 | 2.2 | 1.9.4 | 32.8 |
| 525 | 5.25 | 2.3 | 2.0.0 | 34.1 |
| 550 | 5.5 | 2.4 | 2.0.6 | 35.4 |
| 575 | 5.75 | 2.5 | 2.1.1 | 36.7 |
| 600 | 6 | 2.7 | 2.1.7 | 38 |
| 625 | 6.25 | 2.8 | 2.2.2 | 39.3 |
| 650 | 6.5 | 2.9 | 2.2.8 | 40.6 |
| 675 | 6.75 | 3 | 2.3.3 | 41.9 |
| 700 | 7 | 3.2 | 2.3.9 | 43.2 |
| 725 | 7.25 | 3.3 | 2.4.4 | 44.5 |
| 750 | 7.5 | 3.4 | 2.5.0 | 45.8 |
| 775 | 7.75 | 3.5 | 2.5.6 | 47.1 |
| 800 | 8 | 3.6 | 2.6.1 | 48.4 |
| 825 | 8.25 | 3.8 | 2.6.7 | 49.7 |
| 850 | 8.5 | 3.9 | 2.7.2 | 51 |
| 875 | 8.75 | 4 | 2.7.8 | 52.3 |
| 900 | 9 | 4.1 | 2.8.3 | 53.6 |
| 925 | 9.25 | 4.3 | 2.8.9 | 54.9 |
| 950 | 9.5 | 4.4 | 2.9.4 | 56.2 |
| 975 | 9.75 | 4.5 | 3.0.0 | 57.5 |
| 1000 | 10 | 4.6 | 3.0.6 | 58.8 |
| 1025 | 10.25 | 4.7 | 3.1.1 | 60.1 |
| 1050 | 10.5 | 4.9 | 3.1.7 | 61.4 |
| 1075 | 10.75 | 5 | 3.2.2 | 62.7 |
| 1100 | 11 | 5.1 | 3.2.8 | 64 |
| 1125 | 11.25 | 5.2 | 3.3.3 | 65.3 |
| 1150 | 11.5 | 5.4 | 3.3.9 | 66.6 |
| 1175 | 11.75 | 5.5 | 3.4.4 | 67.9 |
| 1200 | 12 | 5.6 | 3.5.0 | 69.2 |