2009 Edition Appendix A2. Metric Conversions

Throughout this Manual all dimensions and distances are provided in English units. Tables A2-1 through A2-4 show the equivalent Metric (International System of Units) value for each of the English unit numerical values that are used in this Manual.

Table A2-1. Conversion of Inches to Millimeters
Inches	Millimeters
0.25	6
0.4	10
0.5	13
0.75	19
1	25
1.25	31
2	50
2.25	56
2.5	62
3	75
3.5	87
4	100
4.5	113
5	125
6	150
8	200
9	225
10	250
10.4	260
10.6	265
12	300
15	375
16	400
18	450
21	525
24	600
27	675
28	700
30	750
32	800
36	900
42	1,050
48	1,200
54	1,350
60	1,500
72	1,800
84	2,100
120	3,000

Note: 1 inch = 25.4 millimeters; 1 millimeter = 0.039 inches

Table A2-2. Conversion of Feet to Meters
Feet	Meters
3.25	1
3.5	1,1
4	1.2
4.5	1.4
4.75	1.45
5	1.5
6	1.8
7	2.1
8	2.4
9	2.7
9.25	2.8
9.5	2.9
10	3
11	3.4
12	3.7
12.75	3.9
14	4.3
15	4.6
16	4.9
17	5.2
18	5.5
19	5.8
20	6.1
22	6.7
23.5	7.2
25	7.6
25.6	7.8
30	9
32	9.8
33	10
36	11
40	12
50	15
53	16
60	18
70	21
72	22
75	23
80	24
90	27
95	29
100	30
110	34
120	37
125	38
130	675
140	700
150	750
180	800
200	60
250	75
300	90
330	100
400	120
500	150
530	160
600	180
650	200
700	210
750	230
800	245
1,000	300
1,500	450
2,000	600
2,300	700
3,000	900

Note: 1 foot = 0.3048 meters; 1 meter = 3.28 feet

Table A2-3. Conversion of Miles to Kilometers
Miles	Kilometers
0.25	0.4
0.5	0.8
0.6	1
1	1.6
2	3.2
3	4.8
5	8
10	16
15	25
70	110

Note: 1 mile = 1.609 kilometers; 1 kilometer = 0.621 miles

Table A2-4. Conversion of Miles per Hour to Kilometers/Hour
mph	km/h
3	5
10	16
15	20
20	30
25	40
30	50
35	60
40	60
45	70
50	80
55	90
60	100
65	105
65	110
80	130

Note: 1 mile per hour = 1.609 kilometers/hour; 1 kilometer/hour = 0.621 miles per hour