重量キログラムをニュートンに換算する

以下の解説は重量キログラムをニュートンに換算する (kgf → n) のままです。力

重量キログラムをニュートンに換算する方法

9.80665 を掛けます。小数二桁でよければ 9.81 でかまいません。50 kgf は 490.3 N、100 kgf は 980.7 N です。

N = kgf × 9.80665逆方向は 9.80665 で割ります。

この二つの単位が使われる場所

重量キログラムは正確に 9.80665 ニュートンで、質量ではなく力です。国際単位系が両者を分けたのは、まさにこの混同を終わらせるためでした。ニュートンは 1 キログラムに毎秒毎秒 1 メートルの加速度を与える力で、この名を与えられたのは 1948 年のことにすぎません。

重量キログラムからニュートンへの換算表

1 kgf	9.81 N
2 kgf	19.61 N
5 kgf	49.03 N
10 kgf	98.07 N
20 kgf	196.13 N
50 kgf	490.33 N
100 kgf	980.67 N
200 kgf	1,961.33 N
300 kgf	2,942.00 N
500 kgf	4,903.33 N
1,000 kgf	9,806.65 N

すべての値を表示

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

1 kgf = 9.807 N
2 kgf = 19.613 N
3 kgf = 29.42 N
4 kgf = 39.227 N
5 kgf = 49.033 N
6 kgf = 58.84 N
7 kgf = 68.647 N
8 kgf = 78.453 N
9 kgf = 88.26 N
10 kgf = 98.066 N
11 kgf = 107.873 N
12 kgf = 117.68 N
13 kgf = 127.486 N
14 kgf = 137.293 N
15 kgf = 147.1 N
16 kgf = 156.906 N
17 kgf = 166.713 N
18 kgf = 176.52 N
19 kgf = 186.326 N
20 kgf = 196.133 N
21 kgf = 205.94 N
22 kgf = 215.746 N
23 kgf = 225.553 N
24 kgf = 235.36 N
25 kgf = 245.166 N
26 kgf = 254.973 N
27 kgf = 264.78 N
28 kgf = 274.586 N
29 kgf = 284.393 N
30 kgf = 294.2 N
31 kgf = 304.006 N
32 kgf = 313.813 N
33 kgf = 323.619 N
34 kgf = 333.426 N
35 kgf = 343.233 N
36 kgf = 353.039 N
37 kgf = 362.846 N
38 kgf = 372.653 N
39 kgf = 382.459 N
40 kgf = 392.266 N
41 kgf = 402.073 N
42 kgf = 411.879 N
43 kgf = 421.686 N
44 kgf = 431.493 N
45 kgf = 441.299 N
46 kgf = 451.106 N
47 kgf = 460.913 N
48 kgf = 470.719 N
49 kgf = 480.526 N
50 kgf = 490.333 N
51 kgf = 500.139 N
52 kgf = 509.946 N
53 kgf = 519.752 N
54 kgf = 529.559 N
55 kgf = 539.366 N
56 kgf = 549.172 N
57 kgf = 558.979 N
58 kgf = 568.786 N
59 kgf = 578.592 N
60 kgf = 588.399 N
61 kgf = 598.206 N
62 kgf = 608.012 N
63 kgf = 617.819 N
64 kgf = 627.626 N
65 kgf = 637.432 N
66 kgf = 647.239 N
67 kgf = 657.046 N
68 kgf = 666.852 N
69 kgf = 676.659 N
70 kgf = 686.465 N
71 kgf = 696.272 N
72 kgf = 706.079 N
73 kgf = 715.885 N
74 kgf = 725.692 N
75 kgf = 735.499 N
76 kgf = 745.305 N
77 kgf = 755.112 N
78 kgf = 764.919 N
79 kgf = 774.725 N
80 kgf = 784.532 N
81 kgf = 794.339 N
82 kgf = 804.145 N
83 kgf = 813.952 N
84 kgf = 823.759 N
85 kgf = 833.565 N
86 kgf = 843.372 N
87 kgf = 853.179 N
88 kgf = 862.985 N
89 kgf = 872.792 N
90 kgf = 882.599 N
91 kgf = 892.405 N
92 kgf = 902.212 N
93 kgf = 912.018 N
94 kgf = 921.825 N
95 kgf = 931.632 N
96 kgf = 941.438 N
97 kgf = 951.245 N
98 kgf = 961.052 N
99 kgf = 970.858 N
100 kgf = 980.665 N

101 kgf = 990.472 N
102 kgf = 1,000.278 N
103 kgf = 1,010.085 N
104 kgf = 1,019.892 N
105 kgf = 1,029.698 N
106 kgf = 1,039.505 N
107 kgf = 1,049.312 N
108 kgf = 1,059.118 N
109 kgf = 1,068.925 N
110 kgf = 1,078.731 N
111 kgf = 1,088.538 N
112 kgf = 1,098.345 N
113 kgf = 1,108.151 N
114 kgf = 1,117.958 N
115 kgf = 1,127.765 N
116 kgf = 1,137.571 N
117 kgf = 1,147.378 N
118 kgf = 1,157.185 N
119 kgf = 1,166.991 N
120 kgf = 1,176.798 N
121 kgf = 1,186.605 N
122 kgf = 1,196.411 N
123 kgf = 1,206.218 N
124 kgf = 1,216.025 N
125 kgf = 1,225.831 N
126 kgf = 1,235.638 N
127 kgf = 1,245.445 N
128 kgf = 1,255.251 N
129 kgf = 1,265.058 N
130 kgf = 1,274.865 N
131 kgf = 1,284.671 N
132 kgf = 1,294.478 N
133 kgf = 1,304.284 N
134 kgf = 1,314.091 N
135 kgf = 1,323.898 N
136 kgf = 1,333.704 N
137 kgf = 1,343.511 N
138 kgf = 1,353.318 N
139 kgf = 1,363.124 N
140 kgf = 1,372.931 N
141 kgf = 1,382.738 N
142 kgf = 1,392.544 N
143 kgf = 1,402.351 N
144 kgf = 1,412.158 N
145 kgf = 1,421.964 N
146 kgf = 1,431.771 N
147 kgf = 1,441.578 N
148 kgf = 1,451.384 N
149 kgf = 1,461.191 N
150 kgf = 1,470.998 N
151 kgf = 1,480.804 N
152 kgf = 1,490.611 N
153 kgf = 1,500.417 N
154 kgf = 1,510.224 N
155 kgf = 1,520.031 N
156 kgf = 1,529.837 N
157 kgf = 1,539.644 N
158 kgf = 1,549.451 N
159 kgf = 1,559.257 N
160 kgf = 1,569.064 N
161 kgf = 1,578.871 N
162 kgf = 1,588.677 N
163 kgf = 1,598.484 N
164 kgf = 1,608.291 N
165 kgf = 1,618.097 N
166 kgf = 1,627.904 N
167 kgf = 1,637.711 N
168 kgf = 1,647.517 N
169 kgf = 1,657.324 N
170 kgf = 1,667.131 N
171 kgf = 1,676.937 N
172 kgf = 1,686.744 N
173 kgf = 1,696.55 N
174 kgf = 1,706.357 N
175 kgf = 1,716.164 N
176 kgf = 1,725.97 N
177 kgf = 1,735.777 N
178 kgf = 1,745.584 N
179 kgf = 1,755.39 N
180 kgf = 1,765.197 N
181 kgf = 1,775.004 N
182 kgf = 1,784.81 N
183 kgf = 1,794.617 N
184 kgf = 1,804.424 N
185 kgf = 1,814.23 N
186 kgf = 1,824.037 N
187 kgf = 1,833.844 N
188 kgf = 1,843.65 N
189 kgf = 1,853.457 N
190 kgf = 1,863.263 N
191 kgf = 1,873.07 N
192 kgf = 1,882.877 N
193 kgf = 1,892.683 N
194 kgf = 1,902.49 N
195 kgf = 1,912.297 N
196 kgf = 1,922.103 N
197 kgf = 1,931.91 N
198 kgf = 1,941.717 N
199 kgf = 1,951.523 N
200 kgf = 1,961.33 N

205 kgf = 2,010.363 N
210 kgf = 2,059.397 N
215 kgf = 2,108.43 N
220 kgf = 2,157.463 N
225 kgf = 2,206.496 N
230 kgf = 2,255.529 N
235 kgf = 2,304.563 N
240 kgf = 2,353.596 N
245 kgf = 2,402.629 N
250 kgf = 2,451.663 N
255 kgf = 2,500.696 N
260 kgf = 2,549.729 N
265 kgf = 2,598.762 N
270 kgf = 2,647.795 N
275 kgf = 2,696.829 N
280 kgf = 2,745.862 N
285 kgf = 2,794.895 N
290 kgf = 2,843.929 N
295 kgf = 2,892.962 N
300 kgf = 2,941.995 N
305 kgf = 2,991.028 N
310 kgf = 3,040.062 N
315 kgf = 3,089.095 N
320 kgf = 3,138.128 N
325 kgf = 3,187.161 N
330 kgf = 3,236.194 N
335 kgf = 3,285.228 N
340 kgf = 3,334.261 N
345 kgf = 3,383.294 N
350 kgf = 3,432.328 N
355 kgf = 3,481.361 N
360 kgf = 3,530.394 N
365 kgf = 3,579.427 N
370 kgf = 3,628.46 N
375 kgf = 3,677.494 N
380 kgf = 3,726.527 N
385 kgf = 3,775.56 N
390 kgf = 3,824.594 N
395 kgf = 3,873.627 N
400 kgf = 3,922.66 N
405 kgf = 3,971.693 N
410 kgf = 4,020.726 N
415 kgf = 4,069.76 N
420 kgf = 4,118.793 N
425 kgf = 4,167.826 N
430 kgf = 4,216.86 N
435 kgf = 4,265.893 N
440 kgf = 4,314.926 N
445 kgf = 4,363.959 N
450 kgf = 4,412.992 N
455 kgf = 4,462.026 N
460 kgf = 4,511.059 N
465 kgf = 4,560.092 N
470 kgf = 4,609.126 N
475 kgf = 4,658.159 N
480 kgf = 4,707.192 N
485 kgf = 4,756.225 N
490 kgf = 4,805.259 N
495 kgf = 4,854.292 N
500 kgf = 4,903.325 N

510 kgf = 5,001.392 N
520 kgf = 5,099.458 N
530 kgf = 5,197.524 N
540 kgf = 5,295.591 N
550 kgf = 5,393.657 N
560 kgf = 5,491.724 N
570 kgf = 5,589.791 N
580 kgf = 5,687.857 N
590 kgf = 5,785.924 N
600 kgf = 5,883.99 N
610 kgf = 5,982.057 N
620 kgf = 6,080.123 N
630 kgf = 6,178.189 N
640 kgf = 6,276.256 N
650 kgf = 6,374.322 N
660 kgf = 6,472.389 N
670 kgf = 6,570.456 N
680 kgf = 6,668.522 N
690 kgf = 6,766.589 N
700 kgf = 6,864.655 N
710 kgf = 6,962.722 N
720 kgf = 7,060.788 N
730 kgf = 7,158.854 N
740 kgf = 7,256.921 N
750 kgf = 7,354.987 N
760 kgf = 7,453.054 N
770 kgf = 7,551.121 N
780 kgf = 7,649.187 N
790 kgf = 7,747.254 N
800 kgf = 7,845.32 N
810 kgf = 7,943.387 N
820 kgf = 8,041.453 N
830 kgf = 8,139.519 N
840 kgf = 8,237.586 N
850 kgf = 8,335.653 N
860 kgf = 8,433.719 N
870 kgf = 8,531.786 N
880 kgf = 8,629.852 N
890 kgf = 8,727.919 N
900 kgf = 8,825.985 N
910 kgf = 8,924.052 N
920 kgf = 9,022.118 N
930 kgf = 9,120.185 N
940 kgf = 9,218.251 N
950 kgf = 9,316.318 N
960 kgf = 9,414.384 N
970 kgf = 9,512.45 N
980 kgf = 9,610.517 N
990 kgf = 9,708.583 N
1,000 kgf = 9,806.65 N

1,025 kgf = 10,051.816 N
1,050 kgf = 10,296.983 N
1,075 kgf = 10,542.149 N
1,100 kgf = 10,787.315 N
1,125 kgf = 11,032.481 N
1,150 kgf = 11,277.648 N
1,175 kgf = 11,522.814 N
1,200 kgf = 11,767.98 N
1,225 kgf = 12,013.146 N
1,250 kgf = 12,258.313 N
1,275 kgf = 12,503.479 N
1,300 kgf = 12,748.645 N
1,325 kgf = 12,993.811 N
1,350 kgf = 13,238.977 N
1,375 kgf = 13,484.144 N
1,400 kgf = 13,729.31 N
1,425 kgf = 13,974.476 N
1,450 kgf = 14,219.643 N
1,475 kgf = 14,464.809 N
1,500 kgf = 14,709.975 N
1,525 kgf = 14,955.141 N
1,550 kgf = 15,200.307 N
1,575 kgf = 15,445.474 N
1,600 kgf = 15,690.64 N
1,625 kgf = 15,935.806 N
1,650 kgf = 16,180.973 N
1,675 kgf = 16,426.139 N
1,700 kgf = 16,671.305 N
1,725 kgf = 16,916.471 N
1,750 kgf = 17,161.638 N
1,775 kgf = 17,406.804 N
1,800 kgf = 17,651.97 N
1,825 kgf = 17,897.136 N
1,850 kgf = 18,142.302 N
1,875 kgf = 18,387.469 N
1,900 kgf = 18,632.635 N
1,925 kgf = 18,877.801 N
1,950 kgf = 19,122.968 N
1,975 kgf = 19,368.134 N
2,000 kgf = 19,613.3 N
2,050 kgf = 20,103.633 N
2,100 kgf = 20,593.965 N
2,150 kgf = 21,084.297 N
2,200 kgf = 21,574.63 N
2,250 kgf = 22,064.962 N
2,300 kgf = 22,555.295 N
2,350 kgf = 23,045.628 N
2,400 kgf = 23,535.96 N
2,450 kgf = 24,026.293 N
2,500 kgf = 24,516.625 N
2,550 kgf = 25,006.957 N
2,600 kgf = 25,497.29 N
2,650 kgf = 25,987.622 N
2,700 kgf = 26,477.955 N
2,750 kgf = 26,968.288 N
2,800 kgf = 27,458.62 N
2,850 kgf = 27,948.953 N
2,900 kgf = 28,439.285 N
2,950 kgf = 28,929.617 N
3,000 kgf = 29,419.95 N
3,050 kgf = 29,910.282 N
3,100 kgf = 30,400.615 N
3,150 kgf = 30,890.948 N
3,200 kgf = 31,381.28 N
3,250 kgf = 31,871.613 N
3,300 kgf = 32,361.945 N
3,350 kgf = 32,852.278 N
3,400 kgf = 33,342.61 N
3,450 kgf = 33,832.943 N
3,500 kgf = 34,323.275 N
3,550 kgf = 34,813.608 N
3,600 kgf = 35,303.94 N
3,650 kgf = 35,794.273 N
3,700 kgf = 36,284.605 N
3,750 kgf = 36,774.938 N
3,800 kgf = 37,265.27 N
3,850 kgf = 37,755.603 N
3,900 kgf = 38,245.935 N
3,950 kgf = 38,736.267 N
4,000 kgf = 39,226.6 N
4,050 kgf = 39,716.932 N
4,100 kgf = 40,207.265 N
4,150 kgf = 40,697.597 N
4,200 kgf = 41,187.93 N
4,250 kgf = 41,678.263 N
4,300 kgf = 42,168.595 N
4,350 kgf = 42,658.928 N
4,400 kgf = 43,149.26 N
4,450 kgf = 43,639.593 N
4,500 kgf = 44,129.925 N
4,550 kgf = 44,620.258 N
4,600 kgf = 45,110.59 N
4,650 kgf = 45,600.923 N
4,700 kgf = 46,091.255 N
4,750 kgf = 46,581.587 N
4,800 kgf = 47,071.92 N
4,850 kgf = 47,562.252 N
4,900 kgf = 48,052.585 N
4,950 kgf = 48,542.917 N
5,000 kgf = 49,033.25 N
5,100 kgf = 50,013.915 N
5,200 kgf = 50,994.58 N
5,300 kgf = 51,975.245 N
5,400 kgf = 52,955.91 N
5,500 kgf = 53,936.575 N
5,600 kgf = 54,917.24 N
5,700 kgf = 55,897.905 N
5,800 kgf = 56,878.57 N
5,900 kgf = 57,859.235 N
6,000 kgf = 58,839.9 N
6,100 kgf = 59,820.565 N
6,200 kgf = 60,801.23 N
6,300 kgf = 61,781.895 N
6,400 kgf = 62,762.56 N
6,500 kgf = 63,743.225 N
6,600 kgf = 64,723.89 N
6,700 kgf = 65,704.555 N
6,800 kgf = 66,685.22 N
6,900 kgf = 67,665.885 N
7,000 kgf = 68,646.55 N
7,100 kgf = 69,627.215 N
7,200 kgf = 70,607.88 N
7,300 kgf = 71,588.545 N
7,400 kgf = 72,569.21 N
7,500 kgf = 73,549.875 N
7,600 kgf = 74,530.54 N
7,700 kgf = 75,511.205 N
7,800 kgf = 76,491.87 N
7,900 kgf = 77,472.535 N
8,000 kgf = 78,453.2 N
8,100 kgf = 79,433.865 N
8,200 kgf = 80,414.53 N
8,300 kgf = 81,395.195 N
8,400 kgf = 82,375.86 N
8,500 kgf = 83,356.525 N
8,600 kgf = 84,337.19 N
8,700 kgf = 85,317.855 N
8,800 kgf = 86,298.52 N
8,900 kgf = 87,279.185 N
9,000 kgf = 88,259.85 N
9,100 kgf = 89,240.515 N
9,200 kgf = 90,221.18 N
9,300 kgf = 91,201.845 N
9,400 kgf = 92,182.51 N
9,500 kgf = 93,163.175 N
9,600 kgf = 94,143.84 N
9,700 kgf = 95,124.505 N
9,800 kgf = 96,105.17 N
9,900 kgf = 97,085.835 N
10,000 kgf = 98,066.5 N

標準重力加速度は 1901 年の第 3 回国際度量衡総会以来 9.80665 m/s² です。重量キログラムはここから定義されます。算出方法と出典.

よくある質問

なぜその土地の重力ではなく 9.80665 なのですか。

重量キログラムが測定値ではなく取り決めの値で定義されているからです。実際の重力加速度は赤道の 9.78 m/s² から極の 9.83 まで変わり、標高でさらに変わります。もし kgf が土地に従うなら、パリで校正したばねはキトで嘘をつくことになります。そこで国際度量衡総会は 1901 年に 9.80665 を定め、ニュートンへの換算はどこでも正確になりました。

kgf、kp、キロポンドは同じ単位ですか。

はい、同じものの三つの呼び名です。キロポンド、略して kp はドイツ語の呼び名で、工場の機材や古いばねにいまも読めます。キログラム重という書き方もあります。いずれも 9.80665 ニュートンであり、kp と kgf を併記する説明書は何も混同していません。

耐荷重 500 kg の棚は、力にすると。

4.9 キロニュートン、すなわち 500 kgf です。家具、アンカー、棚の耐荷重は習慣でキログラム表示ですが、実体は力です。50 kg と記されたアンカーは静的な引張りで 490 ニュートンを保ちますが、この数値は荷を静かに置くことを前提にしています。衝撃が加われば実際の力は容易に倍になります。

なぜ規格は重量キログラムを外したのですか。

同じ語が二つの量を指すからです。ある部品が 12 kg あり、そこに 12 kg かかる、と書けば、質量なのか力なのかは読み手の推測に委ねられ、しかも誤りは結果に現れません。ニュートンなら名前だけで曖昧さが消えます。重量キログラムは慣用としては通りますが、国際単位系にはもう属しません。

月面では重量キログラムはどうなりますか。

変わりません。定義により 9.80665 ニュートンの力の単位であり、それは月でも地球でも同じです。変わるのは 1 キログラムの物質の重さのほうで、地球では 1 kgf、月ではおよそ 0.17 kgf です。両者を取り違えるのは、山の上では 1 メートルが縮むと思い込むようなものです。

重量キログラムをニュートンに換算する (kgf → N)