フィート毎秒をメートル毎秒に換算する

以下の解説はフィート毎秒をメートル毎秒に換算する (ft/s → m/s) のままです。速度

フィート毎秒をメートル毎秒に換算する方法

0.3048 を掛けます。3 で割って少し引くと考えても構いません。毎秒 100 フィートは毎秒 30.48 メートルです。

m/s = ft/s × 0.3048逆方向は 0.3048 で割るか、3.28 を掛けます。

この二つの単位が使われる場所

メートル毎秒は国際単位系の速度の単位ですが、道路標識には一つも現れません。物理と風速の観測のなかで生きています。自由落下は両方の言葉で語られます。片方では 9.81 m/s²、もう片方では 32.2 ft/s²。手を離した物体が 1 秒ごとに得る速さを、どちらの表で読むかの違いです。

フィート毎秒からメートル毎秒への換算表

1 ft/s	0.30 m/s
3.28 ft/s	1.00 m/s
5 ft/s	1.52 m/s
10 ft/s	3.05 m/s
16.67 ft/s	5.08 m/s
30 ft/s	9.14 m/s
50 ft/s	15.24 m/s
88 ft/s	26.82 m/s
100 ft/s	30.48 m/s
176 ft/s	53.64 m/s
1,125 ft/s	342.90 m/s

すべての値を表示

1 – 100 101 – 200 205 – 500 510 – 1,000 1,025 – 10,000

1 ft/s = 0.3048 m/s
2 ft/s = 0.6096 m/s
3 ft/s = 0.9144 m/s
4 ft/s = 1.2192 m/s
5 ft/s = 1.524 m/s
6 ft/s = 1.8288 m/s
7 ft/s = 2.1336 m/s
8 ft/s = 2.4384 m/s
9 ft/s = 2.7432 m/s
10 ft/s = 3.048 m/s
11 ft/s = 3.3528 m/s
12 ft/s = 3.6576 m/s
13 ft/s = 3.9624 m/s
14 ft/s = 4.2672 m/s
15 ft/s = 4.572 m/s
16 ft/s = 4.8768 m/s
17 ft/s = 5.1816 m/s
18 ft/s = 5.4864 m/s
19 ft/s = 5.7912 m/s
20 ft/s = 6.096 m/s
21 ft/s = 6.4008 m/s
22 ft/s = 6.7056 m/s
23 ft/s = 7.0104 m/s
24 ft/s = 7.3152 m/s
25 ft/s = 7.62 m/s
26 ft/s = 7.9248 m/s
27 ft/s = 8.2296 m/s
28 ft/s = 8.5344 m/s
29 ft/s = 8.8392 m/s
30 ft/s = 9.144 m/s
31 ft/s = 9.4488 m/s
32 ft/s = 9.7536 m/s
33 ft/s = 10.0584 m/s
34 ft/s = 10.3632 m/s
35 ft/s = 10.668 m/s
36 ft/s = 10.9728 m/s
37 ft/s = 11.2776 m/s
38 ft/s = 11.5824 m/s
39 ft/s = 11.8872 m/s
40 ft/s = 12.192 m/s
41 ft/s = 12.4968 m/s
42 ft/s = 12.8016 m/s
43 ft/s = 13.1064 m/s
44 ft/s = 13.4112 m/s
45 ft/s = 13.716 m/s
46 ft/s = 14.0208 m/s
47 ft/s = 14.3256 m/s
48 ft/s = 14.6304 m/s
49 ft/s = 14.9352 m/s
50 ft/s = 15.24 m/s
51 ft/s = 15.5448 m/s
52 ft/s = 15.8496 m/s
53 ft/s = 16.1544 m/s
54 ft/s = 16.4592 m/s
55 ft/s = 16.764 m/s
56 ft/s = 17.0688 m/s
57 ft/s = 17.3736 m/s
58 ft/s = 17.6784 m/s
59 ft/s = 17.9832 m/s
60 ft/s = 18.288 m/s
61 ft/s = 18.5928 m/s
62 ft/s = 18.8976 m/s
63 ft/s = 19.2024 m/s
64 ft/s = 19.5072 m/s
65 ft/s = 19.812 m/s
66 ft/s = 20.1168 m/s
67 ft/s = 20.4216 m/s
68 ft/s = 20.7264 m/s
69 ft/s = 21.0312 m/s
70 ft/s = 21.336 m/s
71 ft/s = 21.6408 m/s
72 ft/s = 21.9456 m/s
73 ft/s = 22.2504 m/s
74 ft/s = 22.5552 m/s
75 ft/s = 22.86 m/s
76 ft/s = 23.1648 m/s
77 ft/s = 23.4696 m/s
78 ft/s = 23.7744 m/s
79 ft/s = 24.0792 m/s
80 ft/s = 24.384 m/s
81 ft/s = 24.6888 m/s
82 ft/s = 24.9936 m/s
83 ft/s = 25.2984 m/s
84 ft/s = 25.6032 m/s
85 ft/s = 25.908 m/s
86 ft/s = 26.2128 m/s
87 ft/s = 26.5176 m/s
88 ft/s = 26.8224 m/s
89 ft/s = 27.1272 m/s
90 ft/s = 27.432 m/s
91 ft/s = 27.7368 m/s
92 ft/s = 28.0416 m/s
93 ft/s = 28.3464 m/s
94 ft/s = 28.6512 m/s
95 ft/s = 28.956 m/s
96 ft/s = 29.2608 m/s
97 ft/s = 29.5656 m/s
98 ft/s = 29.8704 m/s
99 ft/s = 30.1752 m/s
100 ft/s = 30.48 m/s

101 ft/s = 30.7848 m/s
102 ft/s = 31.0896 m/s
103 ft/s = 31.3944 m/s
104 ft/s = 31.6992 m/s
105 ft/s = 32.004 m/s
106 ft/s = 32.3088 m/s
107 ft/s = 32.6136 m/s
108 ft/s = 32.9184 m/s
109 ft/s = 33.2232 m/s
110 ft/s = 33.528 m/s
111 ft/s = 33.8328 m/s
112 ft/s = 34.1376 m/s
113 ft/s = 34.4424 m/s
114 ft/s = 34.7472 m/s
115 ft/s = 35.052 m/s
116 ft/s = 35.3568 m/s
117 ft/s = 35.6616 m/s
118 ft/s = 35.9664 m/s
119 ft/s = 36.2712 m/s
120 ft/s = 36.576 m/s
121 ft/s = 36.8808 m/s
122 ft/s = 37.1856 m/s
123 ft/s = 37.4904 m/s
124 ft/s = 37.7952 m/s
125 ft/s = 38.1 m/s
126 ft/s = 38.4048 m/s
127 ft/s = 38.7096 m/s
128 ft/s = 39.0144 m/s
129 ft/s = 39.3192 m/s
130 ft/s = 39.624 m/s
131 ft/s = 39.9288 m/s
132 ft/s = 40.2336 m/s
133 ft/s = 40.5384 m/s
134 ft/s = 40.8432 m/s
135 ft/s = 41.148 m/s
136 ft/s = 41.4528 m/s
137 ft/s = 41.7576 m/s
138 ft/s = 42.0624 m/s
139 ft/s = 42.3672 m/s
140 ft/s = 42.672 m/s
141 ft/s = 42.9768 m/s
142 ft/s = 43.2816 m/s
143 ft/s = 43.5864 m/s
144 ft/s = 43.8912 m/s
145 ft/s = 44.196 m/s
146 ft/s = 44.5008 m/s
147 ft/s = 44.8056 m/s
148 ft/s = 45.1104 m/s
149 ft/s = 45.4152 m/s
150 ft/s = 45.72 m/s
151 ft/s = 46.0248 m/s
152 ft/s = 46.3296 m/s
153 ft/s = 46.6344 m/s
154 ft/s = 46.9392 m/s
155 ft/s = 47.244 m/s
156 ft/s = 47.5488 m/s
157 ft/s = 47.8536 m/s
158 ft/s = 48.1584 m/s
159 ft/s = 48.4632 m/s
160 ft/s = 48.768 m/s
161 ft/s = 49.0728 m/s
162 ft/s = 49.3776 m/s
163 ft/s = 49.6824 m/s
164 ft/s = 49.9872 m/s
165 ft/s = 50.292 m/s
166 ft/s = 50.5968 m/s
167 ft/s = 50.9016 m/s
168 ft/s = 51.2064 m/s
169 ft/s = 51.5112 m/s
170 ft/s = 51.816 m/s
171 ft/s = 52.1208 m/s
172 ft/s = 52.4256 m/s
173 ft/s = 52.7304 m/s
174 ft/s = 53.0352 m/s
175 ft/s = 53.34 m/s
176 ft/s = 53.6448 m/s
177 ft/s = 53.9496 m/s
178 ft/s = 54.2544 m/s
179 ft/s = 54.5592 m/s
180 ft/s = 54.864 m/s
181 ft/s = 55.1688 m/s
182 ft/s = 55.4736 m/s
183 ft/s = 55.7784 m/s
184 ft/s = 56.0832 m/s
185 ft/s = 56.388 m/s
186 ft/s = 56.6928 m/s
187 ft/s = 56.9976 m/s
188 ft/s = 57.3024 m/s
189 ft/s = 57.6072 m/s
190 ft/s = 57.912 m/s
191 ft/s = 58.2168 m/s
192 ft/s = 58.5216 m/s
193 ft/s = 58.8264 m/s
194 ft/s = 59.1312 m/s
195 ft/s = 59.436 m/s
196 ft/s = 59.7408 m/s
197 ft/s = 60.0456 m/s
198 ft/s = 60.3504 m/s
199 ft/s = 60.6552 m/s
200 ft/s = 60.96 m/s

205 ft/s = 62.484 m/s
210 ft/s = 64.008 m/s
215 ft/s = 65.532 m/s
220 ft/s = 67.056 m/s
225 ft/s = 68.58 m/s
230 ft/s = 70.104 m/s
235 ft/s = 71.628 m/s
240 ft/s = 73.152 m/s
245 ft/s = 74.676 m/s
250 ft/s = 76.2 m/s
255 ft/s = 77.724 m/s
260 ft/s = 79.248 m/s
265 ft/s = 80.772 m/s
270 ft/s = 82.296 m/s
275 ft/s = 83.82 m/s
280 ft/s = 85.344 m/s
285 ft/s = 86.868 m/s
290 ft/s = 88.392 m/s
295 ft/s = 89.916 m/s
300 ft/s = 91.44 m/s
305 ft/s = 92.964 m/s
310 ft/s = 94.488 m/s
315 ft/s = 96.012 m/s
320 ft/s = 97.536 m/s
325 ft/s = 99.06 m/s
330 ft/s = 100.584 m/s
335 ft/s = 102.108 m/s
340 ft/s = 103.632 m/s
345 ft/s = 105.156 m/s
350 ft/s = 106.68 m/s
355 ft/s = 108.204 m/s
360 ft/s = 109.728 m/s
365 ft/s = 111.252 m/s
370 ft/s = 112.776 m/s
375 ft/s = 114.3 m/s
380 ft/s = 115.824 m/s
385 ft/s = 117.348 m/s
390 ft/s = 118.872 m/s
395 ft/s = 120.396 m/s
400 ft/s = 121.92 m/s
405 ft/s = 123.444 m/s
410 ft/s = 124.968 m/s
415 ft/s = 126.492 m/s
420 ft/s = 128.016 m/s
425 ft/s = 129.54 m/s
430 ft/s = 131.064 m/s
435 ft/s = 132.588 m/s
440 ft/s = 134.112 m/s
445 ft/s = 135.636 m/s
450 ft/s = 137.16 m/s
455 ft/s = 138.684 m/s
460 ft/s = 140.208 m/s
465 ft/s = 141.732 m/s
470 ft/s = 143.256 m/s
475 ft/s = 144.78 m/s
480 ft/s = 146.304 m/s
485 ft/s = 147.828 m/s
490 ft/s = 149.352 m/s
495 ft/s = 150.876 m/s
500 ft/s = 152.4 m/s

510 ft/s = 155.448 m/s
520 ft/s = 158.496 m/s
530 ft/s = 161.544 m/s
540 ft/s = 164.592 m/s
550 ft/s = 167.64 m/s
560 ft/s = 170.688 m/s
570 ft/s = 173.736 m/s
580 ft/s = 176.784 m/s
590 ft/s = 179.832 m/s
600 ft/s = 182.88 m/s
610 ft/s = 185.928 m/s
620 ft/s = 188.976 m/s
630 ft/s = 192.024 m/s
640 ft/s = 195.072 m/s
650 ft/s = 198.12 m/s
660 ft/s = 201.168 m/s
670 ft/s = 204.216 m/s
680 ft/s = 207.264 m/s
690 ft/s = 210.312 m/s
700 ft/s = 213.36 m/s
710 ft/s = 216.408 m/s
720 ft/s = 219.456 m/s
730 ft/s = 222.504 m/s
740 ft/s = 225.552 m/s
750 ft/s = 228.6 m/s
760 ft/s = 231.648 m/s
770 ft/s = 234.696 m/s
780 ft/s = 237.744 m/s
790 ft/s = 240.792 m/s
800 ft/s = 243.84 m/s
810 ft/s = 246.888 m/s
820 ft/s = 249.936 m/s
830 ft/s = 252.984 m/s
840 ft/s = 256.032 m/s
850 ft/s = 259.08 m/s
860 ft/s = 262.128 m/s
870 ft/s = 265.176 m/s
880 ft/s = 268.224 m/s
890 ft/s = 271.272 m/s
900 ft/s = 274.32 m/s
910 ft/s = 277.368 m/s
920 ft/s = 280.416 m/s
930 ft/s = 283.464 m/s
940 ft/s = 286.512 m/s
950 ft/s = 289.56 m/s
960 ft/s = 292.608 m/s
970 ft/s = 295.656 m/s
980 ft/s = 298.704 m/s
990 ft/s = 301.752 m/s
1,000 ft/s = 304.8 m/s

1,025 ft/s = 312.42 m/s
1,050 ft/s = 320.04 m/s
1,075 ft/s = 327.66 m/s
1,100 ft/s = 335.28 m/s
1,125 ft/s = 342.9 m/s
1,150 ft/s = 350.52 m/s
1,175 ft/s = 358.14 m/s
1,200 ft/s = 365.76 m/s
1,225 ft/s = 373.38 m/s
1,250 ft/s = 381 m/s
1,275 ft/s = 388.62 m/s
1,300 ft/s = 396.24 m/s
1,325 ft/s = 403.86 m/s
1,350 ft/s = 411.48 m/s
1,375 ft/s = 419.1 m/s
1,400 ft/s = 426.72 m/s
1,425 ft/s = 434.34 m/s
1,450 ft/s = 441.96 m/s
1,475 ft/s = 449.58 m/s
1,500 ft/s = 457.2 m/s
1,525 ft/s = 464.82 m/s
1,550 ft/s = 472.44 m/s
1,575 ft/s = 480.06 m/s
1,600 ft/s = 487.68 m/s
1,625 ft/s = 495.3 m/s
1,650 ft/s = 502.92 m/s
1,675 ft/s = 510.54 m/s
1,700 ft/s = 518.16 m/s
1,725 ft/s = 525.78 m/s
1,750 ft/s = 533.4 m/s
1,775 ft/s = 541.02 m/s
1,800 ft/s = 548.64 m/s
1,825 ft/s = 556.26 m/s
1,850 ft/s = 563.88 m/s
1,875 ft/s = 571.5 m/s
1,900 ft/s = 579.12 m/s
1,925 ft/s = 586.74 m/s
1,950 ft/s = 594.36 m/s
1,975 ft/s = 601.98 m/s
2,000 ft/s = 609.6 m/s
2,050 ft/s = 624.84 m/s
2,100 ft/s = 640.08 m/s
2,150 ft/s = 655.32 m/s
2,200 ft/s = 670.56 m/s
2,250 ft/s = 685.8 m/s
2,300 ft/s = 701.04 m/s
2,350 ft/s = 716.28 m/s
2,400 ft/s = 731.52 m/s
2,450 ft/s = 746.76 m/s
2,500 ft/s = 762 m/s
2,550 ft/s = 777.24 m/s
2,600 ft/s = 792.48 m/s
2,650 ft/s = 807.72 m/s
2,700 ft/s = 822.96 m/s
2,750 ft/s = 838.2 m/s
2,800 ft/s = 853.44 m/s
2,850 ft/s = 868.68 m/s
2,900 ft/s = 883.92 m/s
2,950 ft/s = 899.16 m/s
3,000 ft/s = 914.4 m/s
3,050 ft/s = 929.64 m/s
3,100 ft/s = 944.88 m/s
3,150 ft/s = 960.12 m/s
3,200 ft/s = 975.36 m/s
3,250 ft/s = 990.6 m/s
3,300 ft/s = 1,005.84 m/s
3,350 ft/s = 1,021.08 m/s
3,400 ft/s = 1,036.32 m/s
3,450 ft/s = 1,051.56 m/s
3,500 ft/s = 1,066.8 m/s
3,550 ft/s = 1,082.04 m/s
3,600 ft/s = 1,097.28 m/s
3,650 ft/s = 1,112.52 m/s
3,700 ft/s = 1,127.76 m/s
3,750 ft/s = 1,143 m/s
3,800 ft/s = 1,158.24 m/s
3,850 ft/s = 1,173.48 m/s
3,900 ft/s = 1,188.72 m/s
3,950 ft/s = 1,203.96 m/s
4,000 ft/s = 1,219.2 m/s
4,050 ft/s = 1,234.44 m/s
4,100 ft/s = 1,249.68 m/s
4,150 ft/s = 1,264.92 m/s
4,200 ft/s = 1,280.16 m/s
4,250 ft/s = 1,295.4 m/s
4,300 ft/s = 1,310.64 m/s
4,350 ft/s = 1,325.88 m/s
4,400 ft/s = 1,341.12 m/s
4,450 ft/s = 1,356.36 m/s
4,500 ft/s = 1,371.6 m/s
4,550 ft/s = 1,386.84 m/s
4,600 ft/s = 1,402.08 m/s
4,650 ft/s = 1,417.32 m/s
4,700 ft/s = 1,432.56 m/s
4,750 ft/s = 1,447.8 m/s
4,800 ft/s = 1,463.04 m/s
4,850 ft/s = 1,478.28 m/s
4,900 ft/s = 1,493.52 m/s
4,950 ft/s = 1,508.76 m/s
5,000 ft/s = 1,524 m/s
5,100 ft/s = 1,554.48 m/s
5,200 ft/s = 1,584.96 m/s
5,300 ft/s = 1,615.44 m/s
5,400 ft/s = 1,645.92 m/s
5,500 ft/s = 1,676.4 m/s
5,600 ft/s = 1,706.88 m/s
5,700 ft/s = 1,737.36 m/s
5,800 ft/s = 1,767.84 m/s
5,900 ft/s = 1,798.32 m/s
6,000 ft/s = 1,828.8 m/s
6,100 ft/s = 1,859.28 m/s
6,200 ft/s = 1,889.76 m/s
6,300 ft/s = 1,920.24 m/s
6,400 ft/s = 1,950.72 m/s
6,500 ft/s = 1,981.2 m/s
6,600 ft/s = 2,011.68 m/s
6,700 ft/s = 2,042.16 m/s
6,800 ft/s = 2,072.64 m/s
6,900 ft/s = 2,103.12 m/s
7,000 ft/s = 2,133.6 m/s
7,100 ft/s = 2,164.08 m/s
7,200 ft/s = 2,194.56 m/s
7,300 ft/s = 2,225.04 m/s
7,400 ft/s = 2,255.52 m/s
7,500 ft/s = 2,286 m/s
7,600 ft/s = 2,316.48 m/s
7,700 ft/s = 2,346.96 m/s
7,800 ft/s = 2,377.44 m/s
7,900 ft/s = 2,407.92 m/s
8,000 ft/s = 2,438.4 m/s
8,100 ft/s = 2,468.88 m/s
8,200 ft/s = 2,499.36 m/s
8,300 ft/s = 2,529.84 m/s
8,400 ft/s = 2,560.32 m/s
8,500 ft/s = 2,590.8 m/s
8,600 ft/s = 2,621.28 m/s
8,700 ft/s = 2,651.76 m/s
8,800 ft/s = 2,682.24 m/s
8,900 ft/s = 2,712.72 m/s
9,000 ft/s = 2,743.2 m/s
9,100 ft/s = 2,773.68 m/s
9,200 ft/s = 2,804.16 m/s
9,300 ft/s = 2,834.64 m/s
9,400 ft/s = 2,865.12 m/s
9,500 ft/s = 2,895.6 m/s
9,600 ft/s = 2,926.08 m/s
9,700 ft/s = 2,956.56 m/s
9,800 ft/s = 2,987.04 m/s
9,900 ft/s = 3,017.52 m/s
10,000 ft/s = 3,048 m/s

国際フィートは 1959 年の国際ヤード・ポンド協定以来、厳密に 0.3048 メートルです。係数が厳密なのはそのためです。算出方法と出典.

よくある質問

なぜ 0.3048 は概数ではなく厳密なのですか。

フィートがもはや測られる長さではなく、メートルの一部として定められているからです。1959 年の国際ヤード・ポンド協定はヤードを厳密に 0.9144 メートルと定め、したがってフィートは 0.3048 メートルになりました。それ以前、アメリカとイギリスのフィートは 100 万分の 2 だけ違い、光学と航空にとっては無視できない差でした。フィート毎秒の速さは、したがって誤差なく換算できます。

アメリカの工学はなぜ 32.174 と書くのですか。

標準重力加速度をフィート毎秒毎秒で表した値だからです。SI の 9.80665 m/s² は 32.174 ft/s² となり、この数値がアメリカの力学と弾道学の式に現れます。自由落下する物体は空気抵抗を除けば、毎秒 32.174 ft/s ずつ速さを増すことになります。

毎分 1000 フィートの昇降率は、どれくらいですか。

毎秒 5.08 メートル、すなわち毎秒 16.67 フィートです。航空では上昇率と降下率を毎秒ではなく毎分フィートで数え、旅客機は 1000 ないし 1500 ft/min で降下するのがふつうです。60 で割ればフィート毎秒になり、そこに 0.3048 を掛ければメートル毎秒が得られます。

弾丸はどの速さから超音速ですか。

およそ毎秒 1125 フィート、すなわち毎秒 343 メートルからで、これは気温 20 度の空気中の音速です。アメリカの弾道学は初速をフィート毎秒で示します。9 mm 弾はおよそ 1150 ft/s、すなわち 350 m/s で、音速をわずかに超えるため、あの鋭い破裂音が生じます。亜音速弾はこの境目より下に意図的に抑えられています。

フィート毎秒から毎時マイルへはどう直しますか。

0.6818 を掛けます。毎時キロメートルなら 1.097 です。毎秒 100 フィートは 68.2 mph、109.7 km/h にあたります。暗算では逆向きのほうが簡単で、毎秒 15 フィートがおよそ毎時 10 マイルです。アメリカの風速を電卓なしで読むにはこれで足ります。

フィート毎秒をメートル毎秒に換算する (ft/s → m/s)