光年をkm（キロメートル）に変換
1 光年 = 9.4607×10¹² km（9,460,730,472,580.8 km）、9.4607×10¹⁵ m。ユリウス年基準です。
換算式
1 光年 = 9.4607×10¹² km（9,460,730,472,580.8 km）、9.4607×10¹⁵ m。ユリウス年基準です。
換算表
| 1 light-year | 9460730000000 km |
|---|---|
| 2 light-year | 18921500000000 km |
| 3 light-year | 28382200000000 km |
| 4 light-year | 37842900000000 km |
| 5 light-year | 47303700000000 km |
| 6 light-year | 56764400000000 km |
| 7 light-year | 66225100000000 km |
| 8 light-year | 75685800000000 km |
| 9 light-year | 85146600000000 km |
| 10 light-year | 94607300000000 km |
| 15 light-year | 141911000000000 km |
| 20 light-year | 189215000000000 km |
| 25 light-year | 236518000000000 km |
| 50 light-year | 473037000000000 km |
| 100 light-year | 946073000000000 km |
| 1000 light-year | 9460730000000000 km |
逆方向の換算表
| 1 km | 1.057e-13 light-year |
|---|---|
| 2 km | 2.114e-13 light-year |
| 3 km | 3.171e-13 light-year |
| 4 km | 4.228e-13 light-year |
| 5 km | 5.285e-13 light-year |
| 6 km | 6.34201e-13 light-year |
| 7 km | 7.39901e-13 light-year |
| 8 km | 8.45601e-13 light-year |
| 9 km | 9.51301e-13 light-year |
| 10 km | 1.057e-12 light-year |
| 15 km | 1.5855e-12 light-year |
| 20 km | 2.114e-12 light-year |
| 25 km | 2.6425e-12 light-year |
| 50 km | 5.285e-12 light-year |
| 100 km | 1.057e-11 light-year |
| 1000 km | 1.057e-10 light-year |
主要データ
| 1 光年 | 9,460,730,472,580.8 km |
|---|---|
| 1 光年 | 9.4607304725808×10¹⁵ m |
| 1 光年 | 約63,241 AU |
| 1 光年 | 約0.306601 パーセク |
よくある質問
1光年は何km？
1光年は約9.4607×10¹²km（9,460,730,472,580.8km）で、光が1ユリウス年に進む距離です。
光年は距離の単位？
はい。「年」とありますが光年は距離の単位で、9.4607×10¹⁵メートルです。
逆方向の換算
印刷用 A4 換算チートシートは Downloads ページへ