FEPA P-grade to JIS grit
Type a value in grit to get it in JIS instantly.
#564JIS
That's 1.19× as coarse as P1000 wet-and-dry for paint, while P320 paper between coats is 2.1× coarser.
Convert the other way: JIS to grit
What it means
How coarse is that grit?
Average particle sizes from FEPA (ISO 6344), ANSI B74.12/B74.18 and JIS R6001. Brands and bonds vary; treat values between listed grits as estimates.
The math
How to convert grit to JIS
Grit scales are tables: P220 = 68 µm = CAMI 220, but P1000 = 18.3 µm ≈ CAMI 600. Between listed grits the size is interpolated.
Example: P800 grit = #564 JIS.
Every unit
That grit in every standard
Tables
grit to JIS conversion table
| grit | JIS |
|---|---|
| P320 grit | #289 JIS |
| P400 grit | #360 JIS |
| P600 grit | #484 JIS |
| P800 grit | #564 JIS |
| P1000 grit | #657 JIS |
| P1500 grit | #912 JIS |
| P2000 grit | #1120 JIS |
JIS to grit conversion table
| JIS | grit |
|---|---|
| #289 JIS | P320 grit |
| #360 JIS | P400 grit |
| #484 JIS | P600 grit |
| #564 JIS | P800 grit |
| #657 JIS | P1001 grit |
| #912 JIS | P1500 grit |
| #1120 JIS | P2000 grit |
Quick answers
Quick answers
- How many JIS is P800 grit?
- P800 grit is #564 JIS.
The units
About these units
FEPA P-grade (grit)
The European grade printed with a P: P120, P400.
JIS grit (JIS)
The Japanese grade used for water stones and fine papers.
Keep going