21英呎等於多少千米？英呎（符號為：ft）和千米（亦稱“千米”，符號為：km）是長度單位，它們之間的換算關係是：1英呎等於0.0003048千米。要將21英呎轉換為千米，我們可以透過英呎與千米換算比率來計算：
21 英呎 = 21 * 0.0003048 千米 = 0.0064008 千米
因此，21英呎換算成千米的答案是21英呎等於0.0064008千米。
了解更多：21千米等於多少英呎? | 1英呎等於幾千米? | 1千米等於幾英呎?
| 英呎 (ft) | 千米 (km) |
|---|---|
| 21.1 ft | 0.00643128 km |
| 21.2 ft | 0.00646176 km |
| 21.3 ft | 0.00649224 km |
| 21.4 ft | 0.00652272 km |
| 21.5 ft | 0.0065532 km |
| 21.6 ft | 0.00658368 km |
| 21.7 ft | 0.00661416 km |
| 21.8 ft | 0.00664464 km |
| 21.9 ft | 0.00667512 km |
| 22 ft | 0.0067056 km |
| 22.1 ft | 0.00673608 km |
| 22.2 ft | 0.00676656 km |
| 22.3 ft | 0.00679704 km |
| 22.4 ft | 0.00682752 km |
| 22.5 ft | 0.006858 km |
| 22.6 ft | 0.00688848 km |
| 22.7 ft | 0.00691896 km |
| 22.8 ft | 0.00694944 km |
| 22.9 ft | 0.00697992 km |
| 23 ft | 0.0070104 km |
| 23.1 ft | 0.00704088 km |
| 23.2 ft | 0.00707136 km |
| 23.3 ft | 0.00710184 km |
| 23.4 ft | 0.00713232 km |
| 23.5 ft | 0.0071628 km |
| 23.6 ft | 0.00719328 km |
| 23.7 ft | 0.00722376 km |
| 23.8 ft | 0.00725424 km |
| 23.9 ft | 0.00728472 km |
| 24 ft | 0.0073152 km |
| 英呎 (ft) | 千米 (km) |
|---|---|
| 24.1 ft | 0.00734568 km |
| 24.2 ft | 0.00737616 km |
| 24.3 ft | 0.00740664 km |
| 24.4 ft | 0.00743712 km |
| 24.5 ft | 0.0074676 km |
| 24.6 ft | 0.00749808 km |
| 24.7 ft | 0.00752856 km |
| 24.8 ft | 0.00755904 km |
| 24.9 ft | 0.00758952 km |
| 25 ft | 0.00762 km |
| 25.1 ft | 0.00765048 km |
| 25.2 ft | 0.00768096 km |
| 25.3 ft | 0.00771144 km |
| 25.4 ft | 0.00774192 km |
| 25.5 ft | 0.0077724 km |
| 25.6 ft | 0.00780288 km |
| 25.7 ft | 0.00783336 km |
| 25.8 ft | 0.00786384 km |
| 25.9 ft | 0.00789432 km |
| 26 ft | 0.0079248 km |
| 26.1 ft | 0.00795528 km |
| 26.2 ft | 0.00798576 km |
| 26.3 ft | 0.00801624 km |
| 26.4 ft | 0.00804672 km |
| 26.5 ft | 0.0080772 km |
| 26.6 ft | 0.00810768 km |
| 26.7 ft | 0.00813816 km |
| 26.8 ft | 0.00816864 km |
| 26.9 ft | 0.00819912 km |
| 27 ft | 0.0082296 km |