=

ニュートンを重量ポンドに換算する方法

ニュートンの値に0.2248を掛けます。欧州の仕様書はニュートンやキロニュートンで、米国の仕様書は重量ポンドで書かれますが、単位が変わるだけで測っている力は同じです。

lbf = N × 0.2248N = lbf × 4.4482

この二つの単位が使われる場所

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。

身近な力のNとlbfの対応

1 N(リンゴ 1 個)0.22 lbf
5 N1.12 lbf
10 N2.25 lbf
20 N4.50 lbf
50 N11.24 lbf
100 N22.48 lbf
200 N44.96 lbf
500 N112.40 lbf
1,000 N224.81 lbf
5,000 N1,124.04 lbf
20,000 N(カラビナ)4,496.18 lbf
すべての値を表示
  • 1 N = 0.2248 lbf
  • 2 N = 0.4496 lbf
  • 3 N = 0.6744 lbf
  • 4 N = 0.8992 lbf
  • 5 N = 1.124 lbf
  • 6 N = 1.3489 lbf
  • 7 N = 1.5737 lbf
  • 8 N = 1.7985 lbf
  • 9 N = 2.0233 lbf
  • 10 N = 2.2481 lbf
  • 11 N = 2.4729 lbf
  • 12 N = 2.6977 lbf
  • 13 N = 2.9225 lbf
  • 14 N = 3.1473 lbf
  • 15 N = 3.3721 lbf
  • 16 N = 3.5969 lbf
  • 17 N = 3.8218 lbf
  • 18 N = 4.0466 lbf
  • 19 N = 4.2714 lbf
  • 20 N = 4.4962 lbf
  • 21 N = 4.721 lbf
  • 22 N = 4.9458 lbf
  • 23 N = 5.1706 lbf
  • 24 N = 5.3954 lbf
  • 25 N = 5.6202 lbf
  • 26 N = 5.845 lbf
  • 27 N = 6.0698 lbf
  • 28 N = 6.2947 lbf
  • 29 N = 6.5195 lbf
  • 30 N = 6.7443 lbf
  • 31 N = 6.9691 lbf
  • 32 N = 7.1939 lbf
  • 33 N = 7.4187 lbf
  • 34 N = 7.6435 lbf
  • 35 N = 7.8683 lbf
  • 36 N = 8.0931 lbf
  • 37 N = 8.3179 lbf
  • 38 N = 8.5427 lbf
  • 39 N = 8.7675 lbf
  • 40 N = 8.9924 lbf
  • 41 N = 9.2172 lbf
  • 42 N = 9.442 lbf
  • 43 N = 9.6668 lbf
  • 44 N = 9.8916 lbf
  • 45 N = 10.1164 lbf
  • 46 N = 10.3412 lbf
  • 47 N = 10.566 lbf
  • 48 N = 10.7908 lbf
  • 49 N = 11.0156 lbf
  • 50 N = 11.2404 lbf
  • 51 N = 11.4653 lbf
  • 52 N = 11.6901 lbf
  • 53 N = 11.9149 lbf
  • 54 N = 12.1397 lbf
  • 55 N = 12.3645 lbf
  • 56 N = 12.5893 lbf
  • 57 N = 12.8141 lbf
  • 58 N = 13.0389 lbf
  • 59 N = 13.2637 lbf
  • 60 N = 13.4885 lbf
  • 61 N = 13.7133 lbf
  • 62 N = 13.9382 lbf
  • 63 N = 14.163 lbf
  • 64 N = 14.3878 lbf
  • 65 N = 14.6126 lbf
  • 66 N = 14.8374 lbf
  • 67 N = 15.0622 lbf
  • 68 N = 15.287 lbf
  • 69 N = 15.5118 lbf
  • 70 N = 15.7366 lbf
  • 71 N = 15.9614 lbf
  • 72 N = 16.1862 lbf
  • 73 N = 16.4111 lbf
  • 74 N = 16.6359 lbf
  • 75 N = 16.8607 lbf
  • 76 N = 17.0855 lbf
  • 77 N = 17.3103 lbf
  • 78 N = 17.5351 lbf
  • 79 N = 17.7599 lbf
  • 80 N = 17.9847 lbf
  • 81 N = 18.2095 lbf
  • 82 N = 18.4343 lbf
  • 83 N = 18.6591 lbf
  • 84 N = 18.884 lbf
  • 85 N = 19.1088 lbf
  • 86 N = 19.3336 lbf
  • 87 N = 19.5584 lbf
  • 88 N = 19.7832 lbf
  • 89 N = 20.008 lbf
  • 90 N = 20.2328 lbf
  • 91 N = 20.4576 lbf
  • 92 N = 20.6824 lbf
  • 93 N = 20.9072 lbf
  • 94 N = 21.132 lbf
  • 95 N = 21.3568 lbf
  • 96 N = 21.5817 lbf
  • 97 N = 21.8065 lbf
  • 98 N = 22.0313 lbf
  • 99 N = 22.2561 lbf
  • 100 N = 22.4809 lbf
  • 101 N = 22.7057 lbf
  • 102 N = 22.9305 lbf
  • 103 N = 23.1553 lbf
  • 104 N = 23.3801 lbf
  • 105 N = 23.6049 lbf
  • 106 N = 23.8297 lbf
  • 107 N = 24.0546 lbf
  • 108 N = 24.2794 lbf
  • 109 N = 24.5042 lbf
  • 110 N = 24.729 lbf
  • 111 N = 24.9538 lbf
  • 112 N = 25.1786 lbf
  • 113 N = 25.4034 lbf
  • 114 N = 25.6282 lbf
  • 115 N = 25.853 lbf
  • 116 N = 26.0778 lbf
  • 117 N = 26.3026 lbf
  • 118 N = 26.5275 lbf
  • 119 N = 26.7523 lbf
  • 120 N = 26.9771 lbf
  • 121 N = 27.2019 lbf
  • 122 N = 27.4267 lbf
  • 123 N = 27.6515 lbf
  • 124 N = 27.8763 lbf
  • 125 N = 28.1011 lbf
  • 126 N = 28.3259 lbf
  • 127 N = 28.5507 lbf
  • 128 N = 28.7755 lbf
  • 129 N = 29.0004 lbf
  • 130 N = 29.2252 lbf
  • 131 N = 29.45 lbf
  • 132 N = 29.6748 lbf
  • 133 N = 29.8996 lbf
  • 134 N = 30.1244 lbf
  • 135 N = 30.3492 lbf
  • 136 N = 30.574 lbf
  • 137 N = 30.7988 lbf
  • 138 N = 31.0236 lbf
  • 139 N = 31.2484 lbf
  • 140 N = 31.4733 lbf
  • 141 N = 31.6981 lbf
  • 142 N = 31.9229 lbf
  • 143 N = 32.1477 lbf
  • 144 N = 32.3725 lbf
  • 145 N = 32.5973 lbf
  • 146 N = 32.8221 lbf
  • 147 N = 33.0469 lbf
  • 148 N = 33.2717 lbf
  • 149 N = 33.4965 lbf
  • 150 N = 33.7213 lbf
  • 151 N = 33.9462 lbf
  • 152 N = 34.171 lbf
  • 153 N = 34.3958 lbf
  • 154 N = 34.6206 lbf
  • 155 N = 34.8454 lbf
  • 156 N = 35.0702 lbf
  • 157 N = 35.295 lbf
  • 158 N = 35.5198 lbf
  • 159 N = 35.7446 lbf
  • 160 N = 35.9694 lbf
  • 161 N = 36.1942 lbf
  • 162 N = 36.419 lbf
  • 163 N = 36.6439 lbf
  • 164 N = 36.8687 lbf
  • 165 N = 37.0935 lbf
  • 166 N = 37.3183 lbf
  • 167 N = 37.5431 lbf
  • 168 N = 37.7679 lbf
  • 169 N = 37.9927 lbf
  • 170 N = 38.2175 lbf
  • 171 N = 38.4423 lbf
  • 172 N = 38.6671 lbf
  • 173 N = 38.8919 lbf
  • 174 N = 39.1168 lbf
  • 175 N = 39.3416 lbf
  • 176 N = 39.5664 lbf
  • 177 N = 39.7912 lbf
  • 178 N = 40.016 lbf
  • 179 N = 40.2408 lbf
  • 180 N = 40.4656 lbf
  • 181 N = 40.6904 lbf
  • 182 N = 40.9152 lbf
  • 183 N = 41.14 lbf
  • 184 N = 41.3648 lbf
  • 185 N = 41.5897 lbf
  • 186 N = 41.8145 lbf
  • 187 N = 42.0393 lbf
  • 188 N = 42.2641 lbf
  • 189 N = 42.4889 lbf
  • 190 N = 42.7137 lbf
  • 191 N = 42.9385 lbf
  • 192 N = 43.1633 lbf
  • 193 N = 43.3881 lbf
  • 194 N = 43.6129 lbf
  • 195 N = 43.8377 lbf
  • 196 N = 44.0626 lbf
  • 197 N = 44.2874 lbf
  • 198 N = 44.5122 lbf
  • 199 N = 44.737 lbf
  • 200 N = 44.9618 lbf
  • 205 N = 46.0858 lbf
  • 210 N = 47.2099 lbf
  • 215 N = 48.3339 lbf
  • 220 N = 49.458 lbf
  • 225 N = 50.582 lbf
  • 230 N = 51.7061 lbf
  • 235 N = 52.8301 lbf
  • 240 N = 53.9541 lbf
  • 245 N = 55.0782 lbf
  • 250 N = 56.2022 lbf
  • 255 N = 57.3263 lbf
  • 260 N = 58.4503 lbf
  • 265 N = 59.5744 lbf
  • 270 N = 60.6984 lbf
  • 275 N = 61.8225 lbf
  • 280 N = 62.9465 lbf
  • 285 N = 64.0705 lbf
  • 290 N = 65.1946 lbf
  • 295 N = 66.3186 lbf
  • 300 N = 67.4427 lbf
  • 305 N = 68.5667 lbf
  • 310 N = 69.6908 lbf
  • 315 N = 70.8148 lbf
  • 320 N = 71.9389 lbf
  • 325 N = 73.0629 lbf
  • 330 N = 74.187 lbf
  • 335 N = 75.311 lbf
  • 340 N = 76.435 lbf
  • 345 N = 77.5591 lbf
  • 350 N = 78.6831 lbf
  • 355 N = 79.8072 lbf
  • 360 N = 80.9312 lbf
  • 365 N = 82.0553 lbf
  • 370 N = 83.1793 lbf
  • 375 N = 84.3034 lbf
  • 380 N = 85.4274 lbf
  • 385 N = 86.5514 lbf
  • 390 N = 87.6755 lbf
  • 395 N = 88.7995 lbf
  • 400 N = 89.9236 lbf
  • 405 N = 91.0476 lbf
  • 410 N = 92.1717 lbf
  • 415 N = 93.2957 lbf
  • 420 N = 94.4198 lbf
  • 425 N = 95.5438 lbf
  • 430 N = 96.6678 lbf
  • 435 N = 97.7919 lbf
  • 440 N = 98.9159 lbf
  • 445 N = 100.04 lbf
  • 450 N = 101.164 lbf
  • 455 N = 102.2881 lbf
  • 460 N = 103.4121 lbf
  • 465 N = 104.5362 lbf
  • 470 N = 105.6602 lbf
  • 475 N = 106.7842 lbf
  • 480 N = 107.9083 lbf
  • 485 N = 109.0323 lbf
  • 490 N = 110.1564 lbf
  • 495 N = 111.2804 lbf
  • 500 N = 112.4045 lbf
  • 510 N = 114.6526 lbf
  • 520 N = 116.9007 lbf
  • 530 N = 119.1487 lbf
  • 540 N = 121.3968 lbf
  • 550 N = 123.6449 lbf
  • 560 N = 125.893 lbf
  • 570 N = 128.1411 lbf
  • 580 N = 130.3892 lbf
  • 590 N = 132.6373 lbf
  • 600 N = 134.8854 lbf
  • 610 N = 137.1335 lbf
  • 620 N = 139.3815 lbf
  • 630 N = 141.6296 lbf
  • 640 N = 143.8777 lbf
  • 650 N = 146.1258 lbf
  • 660 N = 148.3739 lbf
  • 670 N = 150.622 lbf
  • 680 N = 152.8701 lbf
  • 690 N = 155.1182 lbf
  • 700 N = 157.3663 lbf
  • 710 N = 159.6143 lbf
  • 720 N = 161.8624 lbf
  • 730 N = 164.1105 lbf
  • 740 N = 166.3586 lbf
  • 750 N = 168.6067 lbf
  • 760 N = 170.8548 lbf
  • 770 N = 173.1029 lbf
  • 780 N = 175.351 lbf
  • 790 N = 177.5991 lbf
  • 800 N = 179.8472 lbf
  • 810 N = 182.0952 lbf
  • 820 N = 184.3433 lbf
  • 830 N = 186.5914 lbf
  • 840 N = 188.8395 lbf
  • 850 N = 191.0876 lbf
  • 860 N = 193.3357 lbf
  • 870 N = 195.5838 lbf
  • 880 N = 197.8319 lbf
  • 890 N = 200.08 lbf
  • 900 N = 202.328 lbf
  • 910 N = 204.5761 lbf
  • 920 N = 206.8242 lbf
  • 930 N = 209.0723 lbf
  • 940 N = 211.3204 lbf
  • 950 N = 213.5685 lbf
  • 960 N = 215.8166 lbf
  • 970 N = 218.0647 lbf
  • 980 N = 220.3128 lbf
  • 990 N = 222.5609 lbf
  • 1,000 N = 224.8089 lbf
  • 1,025 N = 230.4292 lbf
  • 1,050 N = 236.0494 lbf
  • 1,075 N = 241.6696 lbf
  • 1,100 N = 247.2898 lbf
  • 1,125 N = 252.9101 lbf
  • 1,150 N = 258.5303 lbf
  • 1,175 N = 264.1505 lbf
  • 1,200 N = 269.7707 lbf
  • 1,225 N = 275.391 lbf
  • 1,250 N = 281.0112 lbf
  • 1,275 N = 286.6314 lbf
  • 1,300 N = 292.2516 lbf
  • 1,325 N = 297.8718 lbf
  • 1,350 N = 303.4921 lbf
  • 1,375 N = 309.1123 lbf
  • 1,400 N = 314.7325 lbf
  • 1,425 N = 320.3527 lbf
  • 1,450 N = 325.973 lbf
  • 1,475 N = 331.5932 lbf
  • 1,500 N = 337.2134 lbf
  • 1,525 N = 342.8336 lbf
  • 1,550 N = 348.4539 lbf
  • 1,575 N = 354.0741 lbf
  • 1,600 N = 359.6943 lbf
  • 1,625 N = 365.3145 lbf
  • 1,650 N = 370.9348 lbf
  • 1,675 N = 376.555 lbf
  • 1,700 N = 382.1752 lbf
  • 1,725 N = 387.7954 lbf
  • 1,750 N = 393.4157 lbf
  • 1,775 N = 399.0359 lbf
  • 1,800 N = 404.6561 lbf
  • 1,825 N = 410.2763 lbf
  • 1,850 N = 415.8965 lbf
  • 1,875 N = 421.5168 lbf
  • 1,900 N = 427.137 lbf
  • 1,925 N = 432.7572 lbf
  • 1,950 N = 438.3774 lbf
  • 1,975 N = 443.9977 lbf
  • 2,000 N = 449.6179 lbf
  • 2,050 N = 460.8583 lbf
  • 2,100 N = 472.0988 lbf
  • 2,150 N = 483.3392 lbf
  • 2,200 N = 494.5797 lbf
  • 2,250 N = 505.8201 lbf
  • 2,300 N = 517.0606 lbf
  • 2,350 N = 528.301 lbf
  • 2,400 N = 539.5415 lbf
  • 2,450 N = 550.7819 lbf
  • 2,500 N = 562.0224 lbf
  • 2,550 N = 573.2628 lbf
  • 2,600 N = 584.5033 lbf
  • 2,650 N = 595.7437 lbf
  • 2,700 N = 606.9841 lbf
  • 2,750 N = 618.2246 lbf
  • 2,800 N = 629.465 lbf
  • 2,850 N = 640.7055 lbf
  • 2,900 N = 651.9459 lbf
  • 2,950 N = 663.1864 lbf
  • 3,000 N = 674.4268 lbf
  • 3,050 N = 685.6673 lbf
  • 3,100 N = 696.9077 lbf
  • 3,150 N = 708.1482 lbf
  • 3,200 N = 719.3886 lbf
  • 3,250 N = 730.6291 lbf
  • 3,300 N = 741.8695 lbf
  • 3,350 N = 753.11 lbf
  • 3,400 N = 764.3504 lbf
  • 3,450 N = 775.5909 lbf
  • 3,500 N = 786.8313 lbf
  • 3,550 N = 798.0717 lbf
  • 3,600 N = 809.3122 lbf
  • 3,650 N = 820.5526 lbf
  • 3,700 N = 831.7931 lbf
  • 3,750 N = 843.0335 lbf
  • 3,800 N = 854.274 lbf
  • 3,850 N = 865.5144 lbf
  • 3,900 N = 876.7549 lbf
  • 3,950 N = 887.9953 lbf
  • 4,000 N = 899.2358 lbf
  • 4,050 N = 910.4762 lbf
  • 4,100 N = 921.7167 lbf
  • 4,150 N = 932.9571 lbf
  • 4,200 N = 944.1976 lbf
  • 4,250 N = 955.438 lbf
  • 4,300 N = 966.6785 lbf
  • 4,350 N = 977.9189 lbf
  • 4,400 N = 989.1593 lbf
  • 4,450 N = 1,000.3998 lbf
  • 4,500 N = 1,011.6402 lbf
  • 4,550 N = 1,022.8807 lbf
  • 4,600 N = 1,034.1211 lbf
  • 4,650 N = 1,045.3616 lbf
  • 4,700 N = 1,056.602 lbf
  • 4,750 N = 1,067.8425 lbf
  • 4,800 N = 1,079.0829 lbf
  • 4,850 N = 1,090.3234 lbf
  • 4,900 N = 1,101.5638 lbf
  • 4,950 N = 1,112.8043 lbf
  • 5,000 N = 1,124.0447 lbf
  • 5,100 N = 1,146.5256 lbf
  • 5,200 N = 1,169.0065 lbf
  • 5,300 N = 1,191.4874 lbf
  • 5,400 N = 1,213.9683 lbf
  • 5,500 N = 1,236.4492 lbf
  • 5,600 N = 1,258.9301 lbf
  • 5,700 N = 1,281.411 lbf
  • 5,800 N = 1,303.8919 lbf
  • 5,900 N = 1,326.3728 lbf
  • 6,000 N = 1,348.8537 lbf
  • 6,100 N = 1,371.3346 lbf
  • 6,200 N = 1,393.8154 lbf
  • 6,300 N = 1,416.2963 lbf
  • 6,400 N = 1,438.7772 lbf
  • 6,500 N = 1,461.2581 lbf
  • 6,600 N = 1,483.739 lbf
  • 6,700 N = 1,506.2199 lbf
  • 6,800 N = 1,528.7008 lbf
  • 6,900 N = 1,551.1817 lbf
  • 7,000 N = 1,573.6626 lbf
  • 7,100 N = 1,596.1435 lbf
  • 7,200 N = 1,618.6244 lbf
  • 7,300 N = 1,641.1053 lbf
  • 7,400 N = 1,663.5862 lbf
  • 7,500 N = 1,686.0671 lbf
  • 7,600 N = 1,708.548 lbf
  • 7,700 N = 1,731.0289 lbf
  • 7,800 N = 1,753.5098 lbf
  • 7,900 N = 1,775.9907 lbf
  • 8,000 N = 1,798.4715 lbf
  • 8,100 N = 1,820.9524 lbf
  • 8,200 N = 1,843.4333 lbf
  • 8,300 N = 1,865.9142 lbf
  • 8,400 N = 1,888.3951 lbf
  • 8,500 N = 1,910.876 lbf
  • 8,600 N = 1,933.3569 lbf
  • 8,700 N = 1,955.8378 lbf
  • 8,800 N = 1,978.3187 lbf
  • 8,900 N = 2,000.7996 lbf
  • 9,000 N = 2,023.2805 lbf
  • 9,100 N = 2,045.7614 lbf
  • 9,200 N = 2,068.2423 lbf
  • 9,300 N = 2,090.7232 lbf
  • 9,400 N = 2,113.2041 lbf
  • 9,500 N = 2,135.685 lbf
  • 9,600 N = 2,158.1659 lbf
  • 9,700 N = 2,180.6467 lbf
  • 9,800 N = 2,203.1276 lbf
  • 9,900 N = 2,225.6085 lbf
  • 10,000 N = 2,248.0894 lbf

1重量ポンドは正確に4.4482216152605ニュートンです。ポンドが正確に0.45359237キログラム、標準重力加速度が正確に9.80665メートル毎秒毎秒と、いずれも測定値ではなく取り決めで定められているためです。逆の係数0.2248089431は割り算で得られます。 算出方法と出典.

よくある質問

1ニュートンはどれくらいの重さですか。

リンゴ1個ほどです。1ニュートンは質量101.97グラムが地球の重力で及ぼす力で、0.2248重量ポンド、4分の1ポンドをわずかに下回ります。単位が小さいため仕様書はすぐキロニュートンに移ります。1 kNは224.8 lbf、およそ102キログラム分の重さです。

カラビナに刻まれた24 kNは何を意味しますか。

破断強度であり、使用荷重ではありません。規格EN 12275はクライミング用コネクターに三つの強度表示を求めます。ゲートを閉じた長軸、ゲートを開いた長軸、短軸の三つで、長軸は20 kN以上、他の二つは7 kN以上と定められています。一般的な製品の24 kNは5,395重量ポンド、2.4重量トン近くですが、これは金属が壊れる値です。

なぜジェットエンジンの推力はポンドで示されるのですか。

米国の航空産業が単位を変えなかったうえ、エンジンメーカーが同じ仕様書で世界中に売っているからです。推力27,000ポンドとされるエアバスA320のエンジンは120キロニュートン、サターンVのF-1エンジンの1,522,000ポンドは6.77メガニュートンです。欧州の型式証明の書類はキロニュートンで書かれます。

40ポンドの弓の力はどれくらいですか。

178ニュートンですが、基準の引き尺でのことです。弓の引き重量は重量ポンドで測り、慣習として28インチ、つまり71.1センチメートルの引き尺で表示します。腕の長い射手は表示より強く引き、背の低い射手はそれより弱く引きます。クロスボウも同じで、その引き重量は数百ポンドに達します。

ドアを開けるのにどれだけの力が要りますか。

米国では屋内ドアで最大5重量ポンド、つまり22.2ニュートンで、これがADAのアクセシビリティ規則の上限です。英国の基準は別の道筋でほぼ同じ水準に達し、開き始めの30度までは30ニュートン、その後は22.5ニュートンとしています。単位系は二つでも、動作は同じです。

関連する変換