wikiHow Weight in Stones Conversion Chart Pounds (lbs) Kilograms (kg) Stones (st) 1 0.4536 0.0714 10 4.536 0.714 20 9.072 1.429 30 13.608 2.143 40 18.144 2.857 50 22.680 3.571 60 27.216 4.286 70 31.752 5.000 80 36.288 5.714 90 40.824 6.429 100 45.360 7.143 110 49.896 7.857 120 54.432 8.571 130 58.968 9.286 140 63.504 10.000 150 68.040 10.714 160 72.576 11.429 170 77.112 12.143 180 81.648 12.857 190 86.184 13.571 200 90.720 14.286 210 95.256 15.000 220 99.792 15.714 230 104.328 16.429 240 108.864 17.143 250 113.400 17.857 260 117.936 18.571 270 122.472 19.286 280 127.008 20.000 290 131.544 20.714 300 136.080 21.429 Page