Originating from the Old English word “geard,” the yard has historical roots in measuring land and property—dating back to when it was considered the average length of a stride. Interestingly, the yard as a standardized unit became more consistent with the rule of Henry I of England in the 12th century, who established it to be the distance from his nose to the thumb of his outstretched arm. Today, a yard is specifically defined as 0.9144 meters.
Yards are not only pivotal in everyday measurements, but they also play an iconic role in sports. For instance, American football and golf heavily rely on this unit for measuring distances on fields and courses, affecting strategies and outcomes. These unique uses showcase the yard’s adaptability across various fields.
The kilometer, a unit of length in the metric system, is standard for measuring distances in most of the world, but did you know that it was officially defined in terms of the Earth’s geometry? Originally, a kilometer was devised as one ten-millionth of the distance from the Equator to the North Pole, a fraction of the Earth’s meridian. This fascinating origin reflects humanity’s quest to make sense of the vastness of our planet.
Moreover, the metric system’s global reign didn’t happen overnight. The U.S. is one of the few countries primarily using miles, yet if you’re ever curious, consider that a marathon—26.2 miles—is approximately 42.195 kilometers! Imagine, the very races where athletes push the limits of human endurance are framed by this historical unit, rooting the challenge in a nearly ten-thousand-year-old tradition.
| Yards | Kilometers |
|---|---|
0
yd
|
0
km
|
1
yd
|
0.0009144
km
|
2
yd
|
0.0018288
km
|
3
yd
|
0.0027432
km
|
4
yd
|
0.0036576
km
|
5
yd
|
0.004572
km
|
6
yd
|
0.0054864
km
|
7
yd
|
0.0064008
km
|
8
yd
|
0.0073152
km
|
9
yd
|
0.0082296
km
|
10
yd
|
0.009144
km
|
11
yd
|
0.0100584
km
|
12
yd
|
0.0109728
km
|
13
yd
|
0.0118872
km
|
14
yd
|
0.0128016
km
|
15
yd
|
0.013716
km
|
16
yd
|
0.0146304
km
|
17
yd
|
0.0155448
km
|
18
yd
|
0.0164592
km
|
19
yd
|
0.0173736
km
|
20
yd
|
0.018288
km
|
21
yd
|
0.0192024
km
|
22
yd
|
0.0201168
km
|
23
yd
|
0.0210312
km
|
24
yd
|
0.0219456
km
|
25
yd
|
0.02286
km
|
26
yd
|
0.0237744
km
|
27
yd
|
0.0246888
km
|
28
yd
|
0.0256032
km
|
29
yd
|
0.0265176
km
|
30
yd
|
0.027432
km
|
31
yd
|
0.0283464
km
|
32
yd
|
0.0292608
km
|
33
yd
|
0.0301752
km
|
34
yd
|
0.0310896
km
|
35
yd
|
0.032004
km
|
36
yd
|
0.0329184
km
|
37
yd
|
0.0338328
km
|
38
yd
|
0.0347472
km
|
39
yd
|
0.0356616
km
|
40
yd
|
0.036576
km
|
41
yd
|
0.0374904
km
|
42
yd
|
0.0384048
km
|
43
yd
|
0.0393192
km
|
44
yd
|
0.0402336
km
|
45
yd
|
0.041148
km
|
46
yd
|
0.0420624
km
|
47
yd
|
0.0429768
km
|
48
yd
|
0.0438912
km
|
49
yd
|
0.0448056
km
|
50
yd
|
0.04572
km
|
51
yd
|
0.0466344
km
|
52
yd
|
0.0475488
km
|
53
yd
|
0.0484632
km
|
54
yd
|
0.0493776
km
|
55
yd
|
0.050292
km
|
56
yd
|
0.0512064
km
|
57
yd
|
0.0521208
km
|
58
yd
|
0.0530352
km
|
59
yd
|
0.0539496
km
|
60
yd
|
0.054864
km
|
61
yd
|
0.0557784
km
|
62
yd
|
0.0566928
km
|
63
yd
|
0.0576072
km
|
64
yd
|
0.0585216
km
|
65
yd
|
0.059436
km
|
66
yd
|
0.0603504
km
|
67
yd
|
0.0612648
km
|
68
yd
|
0.0621792
km
|
69
yd
|
0.0630936
km
|
70
yd
|
0.064008
km
|
71
yd
|
0.0649224
km
|
72
yd
|
0.0658368
km
|
73
yd
|
0.0667512
km
|
74
yd
|
0.0676656
km
|
75
yd
|
0.06858
km
|
76
yd
|
0.0694944
km
|
77
yd
|
0.0704088
km
|
78
yd
|
0.0713232
km
|
79
yd
|
0.0722376
km
|
80
yd
|
0.073152
km
|
81
yd
|
0.0740664
km
|
82
yd
|
0.0749808
km
|
83
yd
|
0.0758952
km
|
84
yd
|
0.0768096
km
|
85
yd
|
0.077724
km
|
86
yd
|
0.0786384
km
|
87
yd
|
0.0795528
km
|
88
yd
|
0.0804672
km
|
89
yd
|
0.0813816
km
|
90
yd
|
0.082296
km
|
91
yd
|
0.0832104
km
|
92
yd
|
0.0841248
km
|
93
yd
|
0.0850392
km
|
94
yd
|
0.0859536
km
|
95
yd
|
0.086868
km
|
96
yd
|
0.0877824
km
|
97
yd
|
0.0886968
km
|
98
yd
|
0.0896112
km
|
99
yd
|
0.0905256
km
|
100
yd
|
0.09144
km
|
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