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Decimal Equivalent Chart

Decimal Equivalent Chart

Published by Rusty Spanner on Apr 26th 2024

Use this helpful decimal equivalency chart to convert measurements between metric, fractional, wire gauge and letter size. You can also find a downloadable and printable version of this decimal equivalent chart  here.

Decimal Equivalent Chart

DECIMAL EQUIVALENT CHART

METRIC = GREEN

FRACTIONAL = RED

LETTER SIZE = BLUE

WIRE GAUGE = BLACK

DRILL SIZE DECIMAL INCHES DRILL SIZE DECIMAL INCHES DRILL SIZE DECIMAL INCHES DRILL SIZE DECIMAL INCHES DRILL SIZE DECIMAL INCHES DRILL SIZE DECIMAL INCHES
0.30mm 0.0118 54 0.0550 3.10mm 0.1220 5.50mm 0.2165 8.50mm 0.3346 9/16 0.5625
0.32mm 0.0126 1.40mm 0.0551 1/8 0.1250 7/32 0.2188 8.60mm 0.3346 14.50mm 0.5709
80 0.0135 1.45mm 0.0571 3.20mm 0.1260 5.60mm 0.2205 R 0.3390 37/64 0.5781
0.35mm 0.0138 1.50mm 0.0591 30 0.1285 2 0.2210 8.70mm 0.3425 14.75mm 0.5807
79 0.0145 53 0.0595 3.30mm 0.1299 5.70mm 0.2244 11/32 0.3438 15.00mm 0.5906
0.38mm 0.0150 1.55mm 0.0610 3.40mm 0.1339 1 0.2280 8.80mm 0.3465 19/32 0.5938
1/64 0.0156 1/16 0.0625 29 0.1360 5.80mm 0.2283 S 0.3480 15.25mm 0.6004
0.40mm 0.0157 1.60mm 0.0630 3.50mm 0.1378 5.90mm 0.2323 8.90mm 0.3504 39/64 0.6094
78 0.0160 52 0.0635 28 0.1405 A 0.2340 9.00mm 0.3543 15.50mm 0.6102
0.42mm 0.0165 1.65mm 0.0650 9/64 0.1406 15/64 0.2344 T 0.3580 15.75mm 0.6201
0.45mm 0.0177 1.70mm 0.0669 3.60mm 0.1417 6.00mm 0.2362 9.10mm 0.3583 5/8 0.6250
77 0.0180 51 0.0670 27 0.1440 B 0.2380 23/64 0.3594 16.00mm 0.6295
0.48mm 0.0189 1.75mm 0.0689 3.70mm 0.1457 6.10mm 0.2402 9.20mm 0.3622 16.25mm 0.6398
0.50mm 0.0197 50 0.0700 26 0.1470 C 0.2420 9.30mm 0.3661 41/64 0.6406
76 0.0200 1.80mm 0.0709 25 0.1495 6.20mm 0.2441 U 0.3680 16.50mm 0.6496
75 0.0210 1.85mm 0.0728 3.80mm 0.1496 D 0.2460 9.40mm 0.3701 21/32 0.6562
0.55mm 0.0217 49 0.0730 24 0.1520 6.30mm 0.2480 9.50mm 0.3740 16.75mm 0.6594
74 0.0225 1.90mm 0.0748 3.90mm 0.1535 1/4, E 0.2500 3/8 0.3750 17.00mm 0.6693
0.60mm 0.0236 48 0.0760 23 0.1540 6.40mm 0.2520 V 0.3770 43/64 0.6719
73 0.0240 1.95mm 0.0768 5/32 0.1562 6.50mm 0.2559 9.60mm 0.3780 17.25mm 0.6791
0.62mm 0.0244 5/64 0.0781 22 0.1570 F 0.2570 9.70mm 0.3819 11/16 0.6875
72 0.0250 47 0.0785 4.00mm 0.1575 6.60mm 0.2598 9.80mm 0.3858 17.50mm 0.6890
0.65mm 0.0256 2.00mm 0.0787 21 0.1590 G 0.2610 W 0.3860 45/64 0.7031
71 0.0260 2.05mm 0.0807 20 0.1610 6.70mm 0.2638 9.90mm 0.3898 18.00mm 0.7087
0.70mm 0.0276 46 0.0810 4.10mm 0.1614 17/64 0.2656 25/64 0.3906 23/32 0.7188
70 0.0280 45 0.0820 4.20mm 0.1654 H 0.2660 10.00mm 0.3937 18.50mm 0.7283
69 0.0292 2.10mm 0.0827 19 0.1660 6.80mm 0.2667 X 0.3970 47/64 0.7344
0.75mm 0.0295 2.15mm 0.0846 4.30mm 0.1693 6.90mm 0.2717 10.20mm 0.4016 19.00mm 0.7480
68 0.0310 44 0.0860 18 0.1695 I 0.2720 Y 0.4040 3/4 0.7500
1/32 0.0312 2.20mm 0.0866 11/64 0.1719 7.00mm 0.2756 13/32 0.4062 49/64 0.7656
0.80mm 0.0315 2.25mm 0.0886 17 0.1730 J 0.2770 Z 0.4130 19.50mm 0.7677
67 0.0320 43 0.0890 4.40mm 0.1732 7.10mm 0.2795 10.50mm 0.4134 25/32 0.7812
66 0.0330 2.30mm 0.0906 16 0.1770 K 0.2810 27/64 0.4219 20.00mm 0.7874
0.85mm 0.0335 2.35mm 0.0925 4.50mm 0.1772 9/32 0.2812 10.80mm 0.4252 51/64 0.7969
65 0.0350 42 0.0935 15 0.1800 7.20mm 0.2835 11.00mm 0.4331 20.50mm 0.8071
0.90mm 0.0354 3/32 0.0938 4.60mm 0.1811 7.30mm 0.2874 7/16 0.4375 13/16 0.8125
64 0.0360 2.40mm 0.0945 14 0.1820 L 0.2900 11.20mm 0.4409 21.00mm 0.8268
63 0.0370 41 0.0960 4.70mm, 13 0.1850 7.40mm 0.2913 11.50mm 0.4528 53/64 0.8281
0.95mm 0.0374 2.45mm 0.0965 3/16 0.1875 M 0.2950 29/64 0.4531 27/32 0.8438
62 0.0380 40 0.0980 4.80mm, 12 0.1890 7.50mm 0.2953 11.80mm 0.4646 21.50mm 0.8465
61 0.0390 2.50mm 0.0984 11 0.1910 19/64 0.2969 15/32 0.4688 55/64 0.8465
1.00mm 0.0394 39 0.0995 4.90mm 0.1929 7.60mm 0.2992 12.00mm 0.4724 22.00mm 0.8661
60 0.0400 38 0.1015 10 0.1935 N 0.3020 12.20mm 0.4803 7/8 0.8750
59 0.0410 2.60mm 0.1024 9 0.1960 7.70mm 0.3031 31/64 0.4844 22.50mm 0.8858
1.05mm 0.0413 37 0.1040 5.00mm 0.1969 7.80mm 0.3071 12.50mm 0.4921 54/64 0.8906
58 0.0420 2.70mm 0.1063 8 0.1990 7.90mm 0.3110 1/2 0.5000 23.00mm 0.9055
57 0.0430 36 0.1065 5.10mm 0.2008 5/16 0.3125 12.80mm 0.5039 29/32 0.9062
1.10mm 0.0433 7/64 0.1094 7 0.2010 8.00mm 0.3150 13.00mm 0.5118 59/64 0.9219
1.15mm 0.0453 35 0.1100 13/64 0.2031 O 0.3160 33/64 0.5156 23.50mm 0.9252
56 0.0465 2.80mm 0.1102 6 0.2040 8.10mm 0.3189 13.20mm 0.5197 15/16 0.9375
3/64 0.0469 34 0.1110 5.20mm 0.2047 8.20mm 0.3228 17/32 0.5312 24.00mm 0.9449
1.20mm 0.0472 33 0.1130 5 0.2055 P 0.3230 13.50mm 0.5315 61/64 0.9531
1.25mm 0.0492 2.90mm 0.1142 5.30mm 0.2087 8.30mm 0.3268 13.80mm 0.5433 24.50mm 0.9646
1.30mm 0.0512 32 0.1160 4 0.2090 21/64 0.3281 35/64 0.5469 31/32 0.9688
55 0.0520 3.00mm 0.1181 5.40mm 0.2126 8.40mm 0.3307 14.00mm 0.5512 25.00mm 0.9843
1.35mm 0.0531 31 0.1200 3 0.2130 Q 0.3320 14.25mm 0.5610 63/64 0.9844
1” 1.0000

***The information provided here is for general use only, and may not cover all specific cases or applications.***