速さ・距離・時間の計算機
速さ = 距離 ÷ 時間 を使い、残り 2 つから速さ・距離・時間のどれかを求めます。単位は km/h、m/s、mph から選べます。
結果
値を入力して「計算」を押すと結果が表示されます。
公式
How far you go in each unit of time.
Rearranged to find the distance.
Rearranged to find the time.
この計算ツールの使い方
- Choose what you want to find and the units you are using.
- Enter the other two values in those units, then press Calculate.
解き方付き例題
150 km in 2.5 hours
speed = distance ÷ time = 150 ÷ 2.5 = 60 km/h.
In metres per second: 60 × 1000 ÷ 3600 ≈ 16.666667 m/s.
よくある質問
How do I remember the formula?
Use the triangle: D on top, S and T underneath. Cover the one you want — D = S × T, S = D ÷ T, T = D ÷ S.
How do I convert km/h to m/s?
Multiply by 5/18 (that is × 1000 ÷ 3600). To go back, multiply by 18/5.