JIS grit to CAMI / ANSI grit
Type a value in JIS to get it in CAMI instantly.
446CAMI
That's 1.19× as coarse as P1000 wet-and-dry for paint, while P320 paper between coats is 2.1× coarser.
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 JIS to CAMI
Grit scales are tables: P220 = 68 µm = CAMI 220, but P1000 = 18.3 µm ≈ CAMI 600. Between listed grits the size is interpolated.
Example: #564 JIS = 446 CAMI.
Every unit
That grit in every standard
Tables
JIS to CAMI conversion table
| JIS | CAMI |
|---|---|
| #289 JIS | 272 CAMI |
| #360 JIS | 326 CAMI |
| #484 JIS | 383 CAMI |
| #564 JIS | 446 CAMI |
| #657 JIS | 538 CAMI |
| #912 JIS | 779 CAMI |
| #1120 JIS | 927 CAMI |
CAMI to JIS conversion table
| CAMI | JIS |
|---|---|
| 272 CAMI | #289 JIS |
| 326 CAMI | #361 JIS |
| 383 CAMI | #484 JIS |
| 446 CAMI | #564 JIS |
| 538 CAMI | #657 JIS |
| 779 CAMI | #912 JIS |
| 927 CAMI | #1121 JIS |
Quick answers
Quick answers
- How many CAMI is #564 JIS?
- #564 JIS is 446 CAMI.
The units
About these units
JIS grit (JIS)
The Japanese grade used for water stones and fine papers.
CAMI / ANSI grit (CAMI)
The US grade, printed without a P.
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