长度是一个基本的物理量，可测量两个点之间的距离。它是国际单元（SI）中的七个基本单元之一，仪表（m）是其基本单元。
1 AU = 163,604,549,431.321 yd
1 yd = 6.1123e-12 AU
例子:
将15 天文单位转换为院子：
15 AU = 2,454,068,241,469.816 yd
| 天文单位 | 院子 |
|---|---|
| 0.01 AU | 1,636,045,494.313 yd |
| 0.1 AU | 16,360,454,943.132 yd |
| 1 AU | 163,604,549,431.321 yd |
| 2 AU | 327,209,098,862.642 yd |
| 3 AU | 490,813,648,293.963 yd |
| 5 AU | 818,022,747,156.605 yd |
| 10 AU | 1,636,045,494,313.211 yd |
| 20 AU | 3,272,090,988,626.421 yd |
| 30 AU | 4,908,136,482,939.632 yd |
| 40 AU | 6,544,181,977,252.843 yd |
| 50 AU | 8,180,227,471,566.054 yd |
| 60 AU | 9,816,272,965,879.264 yd |
| 70 AU | 11,452,318,460,192.475 yd |
| 80 AU | 13,088,363,954,505.686 yd |
| 90 AU | 14,724,409,448,818.896 yd |
| 100 AU | 16,360,454,943,132.107 yd |
| 250 AU | 40,901,137,357,830.266 yd |
| 500 AU | 81,802,274,715,660.53 yd |
| 750 AU | 122,703,412,073,490.81 yd |
| 1000 AU | 163,604,549,431,321.06 yd |
| 10000 AU | 1,636,045,494,313,210.8 yd |
| 100000 AU | 16,360,454,943,132,108 yd |
规则