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Guide to Gauges, Pipe Schedules & Decimal Equivalents

  • Length Conversion Factors
  • Pipe Schedules
  • Decimal Equivalents for Gauges
  • Decimal Equivalents of One Inch

Length Conversion Calculator

Length Conversion Factors

If you know: You can get: If you multiply by:
inches millimeters 25.4
feet meters .3048
yards meters 0.9144
miles kilometers 1.609
millimeters inches 0.03937
meters feet 3.281
meters yards 1.094
kilometers miles 0.6214

Pipe Schedules

PIPE O.D. in WEIGHTS & DIMENSIONS OF SEAMLESS & WELDED PIPE Dble.
SIZE Inches 5 10 20 30 40 STD. 60 80 E.H. 100 120 140 160 E.H.
1/8 .405 .035
.1383		 .049
.1863		 .068
.2447		 .068
.2447		 .095
.3145		 .095
.3145
1/4 .540 .049
.2570		 .065
.3297		 .088
.4248		 .088
.4248		 .119
.5351		 .119
.5351
3/8 .675 .049
.3276		 .065
.4235		 .091
.5676		 .091
.5676		 .126
.7388		 .126
.7388
1/2 .840 .065
.5383		 .083
.6710		 .109
.8510		 .109
.8510		 .147
1.088		 .147
1.088		 .187
.1304		 .294
1.714
3/4 1.050 .065
.6838		 .083
.8572		 .113
1.131		 .113
1.131		 .154
1.474		 .154
1.474		 .218
1.937		 .308
2.441
1 1.315 .065
.8678		 .109
1.404		 .133
1.679		 .133
1.679		 .179
2.172		 .179
2.172		 .250
2.844		 .358
3.659
1¼ 1.660 .065
1.107		 .109
1.806		 .140
2.273		 .140
2.273		 .191
2.997		 .191
2.997		 .250
3.765		 .382
5.214
1½ 1.900 .065
1.274		 .109
2.085		 .145
2.718		 .145
2.718		 .200
3.631		 .200
3.631		 .281
4.859		 .400
6.408
2 2.375 .065
1.604		 .109
2.638		 .154
3.653		 .154
3.653		 .218
5.022		 .218
5.022		 .343
7.444		 .436
9.029
2½ 2.875 .083
2.475		 .120
3.531		 .203
5.793		 .203
5.793		 .276
7.661		 .276
7.661		 .375
10.01		 .552
13.70
3 3.500 .083
3.029		 .120
4.332		 .216
7.576		 .216
7.576		 .300
10.25		 .300
10.25		 .437
14.32		 .600
18.58
3½ 4.000 .083
3.472		 .120
4.973		 .226
9.109		 .226
9.109		 .318
12.51		 .318
12.51		 .636
22.85
4 4.500 .083
3.915		 .120
5.613		 .237
10.79		 .237
10.79		 .281
12.66		 .337
14.98		 .337
14.98		 .437
19.01		 .531
22.51		 .674
27.54
4½ 5.000 .247
12.53		 .355
17.61		 .710
32.53
5 5.563 .109
6.349		 .134
7.770		 .258
14.62		 .258
14.62		 .375
20.78		 .375
20.78		 .500
27.04		 .625
32.96		 .750
38.55
6 6.625 .109
7.585		 .134
9.289		 .280
18.97		 .280
18.97		 .432
28.57		 .432
28.57		 .562
36.39		 .718
45.30		 .864
53.16
7 7.625 .301
23.57		 .500
38.05		 .875
63.08
8 8.625 .109
9.914		 .148
13.40		 .250
22.36		 .277
24.70		 .322
28.55		 .322
28.55		 .406
35.64		 .500
43.39		 .500
43.39		 .593
50.87		 .718
60.63		 .812
67.76		 .906
74.69		 .875
72.42
9 9.625 .342
33.90		 .500
48.72
10 10.750 .134
15.19		 .165
18.70		 .250
28.04		 .307
34.24		 .365
40.48		 .365
40.48		 .500
54.74		 .593
64.33		 .500
54.74		 .718
76.93		 .843
89.20		 1.000
104.1		 1.125
115.7
11 11.750 .375
45.55		 .500
60.07
12 12.750 .165
22.18		 .180
24.20		 .250
33.38		 .330
43.77		 .406
53.53		 .375
49.65		 .562
73.16		 .687
88.51		 .500
65.42		 .843
107.2		 1.000
125.5		 1.125
139.7		 1.312
160.3
14 14.000 .250
36.71		 .312
45.68		 .375
54.57		 .437
63.37		 .375
54.57		 .593
84.91		 .750
106.1		 .500
72.09		 .937
130.7		 1.093
150.7		 1.250
170.2		 1.406
189.1
16 16.000 .250
42.05		 .312
52.36		 .375
62.58		 .500
82.77		 .375
62.58		 .656
107.5		 .843
136.5		 .500
82.77		 1.031
164.8		 1.218
192.3		 1.437
223.5		 1.593
245.1
18 18.000 .250
47.39		 .312
59.03		 .437
82.06		 .562
104.8		 .375
70.59		 .750
138.2		 .937
170.8		 .500
93.45		 1.156
208.0		 1.375
244.1		 1.562
274.2		 1.781
308.5
20 20.000 .250
52.73		 .375
78.60		 .500
104.1		 .593
122.9		 .375
78.60		 .812
166.4		 1.031
208.9		 .500
104.1		 1.280
256.1		 1.500
296.4		 1.750
341.1		 1.968
379.0
24 24.000 .250
63.41		 .375
94.62		 .562
140.8		 .687
171.2		 .375
94.62		 .968
238.1		 1.218
296.4		 .500
125.5		 1.531
367.4		 1.812
429.4		 2.062
483.1		 2.343
541.9
BLACK FIGURES: Wall Thickness in Inches RED FIGURES: Weight Per Foot in Pounds

Decimal Equivalents for Gauges

Gauge No. Decimal Inches
0000 .454
000 .425
00 .380
0 .340
1 .300
2 .284
3 .259
4 .238
5 .220
6 .203
7 .180
8 .165
9 .148
10 .134
11 .120
12 .109
13 .095
14 .083
15 .072
16 .065
17 .058
18 .049
19 .042
20 .035
21 .032
22 .028
23 .025
24 .022
25 .020
26 .018
27 .016
28 .014
29 .013
30 .012
31 .010
32 .009
33 .008
34 .007
35 .005
36 .004

Decimal Equivalents of One Inch

Fractional Inch Dec. Equiv. Millimeters
1/64 — .0156 — .397
1/32 — .0313 — .794
3/64 — .0469 — 1.191
1/16 — .0625 — 1.588
5/64 — .0781 — 1.984
1/12 — .0833 — 2.117
3/32 — .0938 — 2.381
1/10 — .1000 — 2.540
7/64 — .1094 — 2.778
1/8 — .1250 — 3.175
9/64 — .1406 — 3.572
5/32 — .1563 — 3.969
1/6 — .1667 — 4.233
11/64 — .1719 — 4.366
3/16 — .1875 — 4.700
1/5 — .2000 — 5.080
13/64 — .2031 — 5.159
7/32 — .2188 — 5.556
15/64 — .2344 — 5.953
1/4 — .2500 — 6.350
17/64 — .2656 — 6.747
9/32 — .2813 — 7.144
19/64 — .2969 — 7.541
3/10 — .3000 — 7.620
5/16 — .3125 — 7.937
21/64 — .3281 — 8.334
1/3 — .3333 — 8.467
11/32 — .3438 — 8.731
23/64 — .3594 — 9.128
3/8 — .3750 — 9.525
25/64 — .3906 — 9.922
2/5 — .4000 — 10.160
13/32 — .4063 — 10.319
5/12 — .4167 — 10.583
27/64 — .4219 — 10.716
7/16 — .4375 — 11.112
29/64 — .4531 — 11.509
15/32 — .4688 — 11.906
31/64 — .4844 — 12.303
1/2 — .5000 — 12.700
Fractional Inch Dec. Equiv. Millimeters
33/64 — .5156 — 13.097
17/32 — .5313 — 13.494
35/64 — .5469 — 13.891
9/16 — .5625 — 14.288
37/64 — .5781 — 14.684
7/12 — .5833 — 14.817
19/32 — .5938 — 15.081
3/5 — .6000 — 15.240
39/64 — .6094 — 15.478
5/8 — .6250 — 15.875
41/64 — .6406 — 16.272
21/32 — .6563 — 16.669
1/3 — .6667 — 16.933
43/64 — .6719 — 17.066
11/16 — .6875 — 17.463
7/10 — .7000 — 17.780
45/64 — .7031 — 17.859
23/32 — .7188 — 18.256
47/64 — .7344 — 18.653
3/4 — .7500 — 19.050
49/64 — .7656 — 19.447
25/32 — .7813 — 19.844
51/64 — .7969 — 20.241
4/5 — .8000 — 20.320
13/16 — .8125 — 20.638
53/64 — .8281 — 21.034
5/6 — .8333 — 21.167
27/32 — .8438 — 21.431
55/64 — .8594 — 21.828
7/8 — .8750 — 22.225
57/64 — .8906 — 22.622
9/10 — .9000 — 22.860
29/32 — .9063 — 23.019
11/12 — .9167 — 23.283
59/64 — .9219 — 23.416
15/16 — .9375 — 23.813
61/64 — .9531 — 24.209
31/32 — .9688 — 24.606
63/64 — .9844 — 25.003
1 — 1.000 — 25.400