Sandpaper Grit Converter

Grit system

Grit

FEPA equivalentP220

Average particle size: 66 µm
Typical use: Final sanding before finishing

CAMI	FEPA	Particle (µm)
60	P60	268
80	P80	192
100	P100	141
120	P120	116
150	P150	93
180	P180	78
220	P220	66
240	P280	53.5
280	P320	44
320	P400	36
400	P800	23.6
500	P1000	19.7
600	P1200	16
800	P1500	12.2
1000	P2000	9.2

Equivalents are approximate. Above about 220, FEPA P-numbers rise faster than CAMI numbers for the same particle size.

Compare sandpaper grits between the US (CAMI) and European (FEPA “P”) systems, and see what each grit is for.

How to use the Sandpaper Grit Converter

Choose CAMI or FEPA.
Enter the grit number.
Read the equivalent grit, particle size and uses.

How it works

Grit numbers describe abrasive particle size — higher numbers are finer. Coarse grits (40–80) remove material fast, medium (100–150) smooth surfaces, fine (180–240) prepare for finishing and very fine (320+) sand between coats or wet-sand. CAMI and FEPA match closely up to about 220, then diverge: CAMI 400 is about P800. Values are approximate averages.

Frequently asked questions

What grit for sanding wood before staining?

Finish at 150–180 for stain, 180–220 for paint or clear coat.

What is P400 in CAMI?

About 320 CAMI.

What grit removes paint?

60–80 grit.

What grit for wet sanding a car?

1500–3000 grit (FEPA P-grades).