Grit Size Conversion Chart

Reference chart for converting between different grit size standards (FEPA, ANSI, JIS, Micron, Mesh)

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FEPA	ANSI	JIS	Micron (μm)	Mesh	Category
P12	16	16	1815	12	Very Coarse
P16	20	20	1324	16	Very Coarse
P20	24	24	1000	20	Very Coarse
P24	30	30	764	24	Coarse
P30	36	36	642	30	Coarse
P36	40	40	538	36	Coarse
P40	50	50	425	40	Coarse
P50	60	60	336	50	Medium
P60	80	80	269	60	Medium
P80	100	100	201	80	Medium
P100	120	120	162	100	Medium
P120	150	150	125	120	Fine
P150	180	180	100	150	Fine
P180	220	220	82	180	Fine
P220	240	240	68	220	Fine
P240	280	280	58.5	240	Very Fine
P280	320	320	52.2	280	Very Fine
P320	360	360	46.2	320	Very Fine
P360	400	400	40.5	360	Very Fine
P400	500	500	35.0	400	Very Fine
P500	600	600	30.2	500	Ultra Fine
P600	800	800	25.8	600	Ultra Fine
P800	1000	1000	21.8	800	Ultra Fine
P1000	1200	1200	18.3	1000	Ultra Fine
P1200	1500	1500	15.3	1200	Ultra Fine
P1500	2000	2000	12.6	1500	Ultra Fine
P2000	2500	2500	10.3	2000	Ultra Fine
P2500	3000	3000	8.4	2500	Ultra Fine

• FEPA: Federation of European Producers of Abrasives standard (P-grade)
• ANSI: American National Standards Institute
• JIS: Japanese Industrial Standards
• Micron (μm): Average particle size in micrometers
• Mesh: US Standard mesh size (particles per inch)
• Conversions are approximate; actual values may vary slightly between manufacturers
• Always refer to manufacturer specifications for critical applications