Originally any good-sized rock chosen as a local standard, the stone came to be widely used as a unit of weight in trade, its value fluctuating with the commodity and region. The stone remains widely used in Britain and Ireland for human body weight, (although younger people tend to use kilograms in Ireland): in those countries people may commonly be said to weigh, e.g., "11 stone 4" (11 stones and 4 pounds), rather than "72 kilograms" as in many other countries, or "158 pounds" (the conventional way of expressing the same weight in the United States, but decreasingly in Canada). In Australia and New Zealand, the metric system (kilograms) has displaced stone and pounds since the 1970s.
"The plural of stone is also stone. Many scales provide a weight display setting in kilograms, pounds or stone."
The stone (st) is a unit of measure equal to 14 pounds (lb) avoirdupois, or 6.3503 kilograms (kg).
This unit of measurement is used in Australia, Great Britain, and Ireland for measuring human body weight, and people there may commonly be said to weigh, e.g., 11 stone 4 (11 stone - 4 pounds), which equals approx. 72 kilograms or 158 pounds.
The plural of stone is also stone. Many scales provide a weight display setting in kilograms, pounds or stone.
Use our calculator below to convert stones to pounds and/or kilograms - and vice versa.
Simply enter the value you know in the appropriate box and the other figures will be calculated for you.
Listed below the conversion calculator is a conversion table showing approximate comparison weight in Pounds, Kilograms, and Stones.
Note: This converter requires you to have JavaScript enabled in your browser settings.
| Stones to Pounds and Kilograms Conversion Table | ||
|---|---|---|
| Kilograms | Pounds | Stone/Pounds |
| 45.0 kg = | 99 lb = | 7 stone 1 lb |
| 45.5 kg = | 100 lb = | 7 stone 2 lb |
| 45.9 kg = | 101 lb = | 7 stone 3 lb |
| 46.4 kg = | 102 lb = | 7 stone 4 lb |
| 46.8 kg = | 103 lb = | 7 stone 5 lb |
| 47.3 kg = | 104 lb = | 7 stone 6 lb |
| 47.7 kg = | 105 lb = | 7 stone 7 lb |
| 48.2 kg = | 106 lb = | 7 stone 8 lb |
| 48.6 kg = | 107 lb = | 7 stone 9 lb |
| 49.1 kg = | 108 lb = | 7 stone 10 lb |
| 49.5 kg = | 109 lb = | 7 stone 11 lb |
| 50.0 kg = | 110 lb = | 7 stone 12 lb |
| 50.5 kg = | 111 lb = | 7 stone 13 lb |
| 50.9 kg = | 112 lb = | 8 stone 0 lb |
| 51.4 kg = | 113 lb = | 8 stone 1 lb |
| 51.8 kg = | 114 lb = | 8 stone 2 lb |
| 52.3 kg = | 115 lb = | 8 stone 3 lb |
| 52.7 kg = | 116 lb = | 8 stone 4 lb |
| 53.2 kg = | 117 lb = | 8 stone 5 lb |
| 53.6 kg = | 118 lb = | 8 stone 6 lb |
| 54.1 kg = | 119 lb = | 8 stone 7 lb |
| 54.5 kg = | 120 lb = | 8 stone 8 lb |
| 55.0 kg = | 121 lb = | 8 stone 9 lb |
| 55.5 kg = | 122 lb = | 8 stone 10 lb |
| 55.9 kg = | 123 lb = | 8 stone 11 lb |
| 56.4 kg = | 124 lb = | 8 stone 12 lb |
| 56.8 kg = | 125 lb = | 8 stone 13 lb |
| 57.3 kg = | 126 lb = | 9 stone 0 lb |
| 57.7 kg = | 127 lb = | 9 stone 1 lb |
| 58.2 kg = | 128 lb = | 9 stone 2 lb |
| 58.6 kg = | 129 lb = | 9 stone 3 lb |
| 59.1 kg = | 130 lb = | 9 stone 4 lb |
| 59.5 kg = | 131 lb = | 9 stone 5 lb |
| 60.0 kg = | 132 lb = | 9 stone 6 lb |
| 60.5 kg = | 133 lb = | 9 stone 7 lb |
| 60.9 kg = | 134 lb = | 9 stone 8 lb |
| 61.4 kg = | 135 lb = | 9 stone 9 lb |
| 61.8 kg = | 136 lb = | 9 stone 10 lb |
| 62.3 kg = | 137 lb = | 9 stone 11 lb |
| 62.7 kg = | 138 lb = | 9 stone 12 lb |
| 63.2 kg = | 139 lb = | 9 stone 13 lb |
| 63.6 kg = | 140 lb = | 10 stone 0 lb |
| 64.1 kg = | 141 lb = | 10 stone 1 lb |
| 64.5 kg = | 142 lb = | 10 stone 2 lb |
| 65.0 kg = | 143 lb = | 10 stone 3 lb |
| 65.5 kg = | 144 lb = | 10 stone 4 lb |
| 65.9 kg = | 145 lb = | 10 stone 5 lb |
| 66.4 kg = | 146 lb = | 10 stone 6 lb |
| 66.8 kg = | 147 lb = | 10 stone 7 lb |
| 67.3 kg = | 148 lb = | 10 stone 8 lb |
| 67.7 kg = | 149 lb = | 10 stone 9 lb |
| 68.2 kg = | 150 lb = | 10 stone 10 lb |
| 68.6 kg = | 151 lb = | 10 stone 11 lb |
| 69.1 kg = | 152 lb = | 10 stone 12 lb |
| 69.5 kg = | 153 lb = | 10 stone 13 lb |
| 70.0 kg = | 154 lb = | 11 stone 0 lb |
| 70.5 kg = | 155 lb = | 11 stone 1 lb |
| 70.9 kg = | 156 lb = | 11 stone 2 lb |
| 71.4 kg = | 157 lb = | 11 stone 3 lb |
| 71.8 kg = | 158 lb = | 11 stone 4 lb |
| 72.3 kg = | 159 lb = | 11 stone 5 lb |
| 72.7 kg = | 160 lb = | 11 stone 6 lb |
| 73.2 kg = | 161 lb = | 11 stone 7 lb |
| 73.6 kg = | 162 lb = | 11 stone 8 lb |
| 74.1 kg = | 163 lb = | 11 stone 9 lb |
| 74.5 kg = | 164 lb = | 11 stone 10 lb |
| 75.0 kg = | 165 lb = | 11 stone 11 lb |
| 75.5 kg = | 166 lb = | 11 stone 12 lb |
| 75.9 kg = | 167 lb = | 11 stone 13 lb |
| 76.3 kg = | 168 lb = | 12 stone 0 lb |
| 76.8 kg = | 169 lb = | 12 stone 1 lb |
| 77.3 kg = | 170 lb = | 12 stone 2 lb |
| 77.7 kg = | 171 lb = | 12 stone 3 lb |
| 78.2 kg = | 172 lb = | 12 stone 4 lb |
| 78.6 kg = | 173 lb = | 12 stone 5 lb |
| 79.1 kg = | 174 lb = | 12 stone 6 lb |
| 79.5 kg = | 175 lb = | 12 stone 7 lb |
| 80.0 kg = | 176 lb = | 12 stone 8 lb |
| 80.5 kg = | 177 lb = | 12 stone 9 lb |
| 80.9 kg = | 178 lb = | 12 stone 10 lb |
| 81.4 kg = | 179 lb = | 12 stone 11 lb |
| 81.8 kg = | 180 lb = | 12 stone 12 lb |
| 82.3 kg = | 181 lb = | 12 stone 13 lb |
| 82.7 kg = | 182 lb = | 13 stone 0 lb |
| 83.2 kg = | 183 lb = | 13 stone 1 lb |
| 83.6 kg = | 184 lb = | 13 stone 2 lb |
| 84.1 kg = | 185 lb = | 13 stone 3 lb |
| 84.5 kg = | 186 lb = | 13 stone 4 lb |
| 85.0 kg = | 187 lb = | 13 stone 5 lb |
| 85.5 kg = | 188 lb = | 13 stone 6 lb |
| 85.9 kg = | 189 lb = | 13 stone 7 lb |
| 86.4 kg = | 190 lb = | 13 stone 8 lb |
| 86.8 kg = | 191 lb = | 13 stone 9 lb |
| 87.3 kg = | 192 lb = | 13 stone 10 lb |
| 87.7 kg = | 193 lb = | 13 stone 11 lb |
| 88.2 kg = | 194 lb = | 13 stone 12 lb |
| 88.6 kg = | 195 lb = | 13 stone 13 lb |
| 89.1 kg = | 196 lb = | 14 stone 0 lb |
| 89.5 kg = | 197 lb = | 14 stone 1 lb |
| 90.0 kg = | 198 lb = | 14 stone 2 lb |
| 90.5 kg = | 199 lb = | 14 stone 3 lb |
| 90.9 kg = | 200 lb = | 14 stone 4 lb |
| 91.4 kg = | 201 lb = | 14 stone 5 lb |
| 91.8 kg = | 202 lb = | 14 stone 6 lb |
| 92.3 kg = | 203 lb = | 14 stone 7 lb |
| 92.7 kg = | 204 lb = | 14 stone 8 lb |
| 93.2 kg = | 205 lb = | 14 stone 9 lb |
| 93.6 kg = | 206 lb = | 14 stone 10 lb |
| 94.1 kg = | 207 lb = | 14 stone 11 lb |
| 94.5 kg = | 208 lb = | 14 stone 12 lb |
| 95.0 kg = | 209 lb = | 14 stone 13 lb |
| 95.5 kg = | 210 lb = | 15 stone 0 lb |
| 95.9 kg = | 211 lb = | 15 stone 1 lb |
| 96.4 kg = | 212 lb = | 15 stone 2 lb |
| 96.8 kg = | 213 lb = | 15 stone 3 lb |
| 97.3 kg = | 214 lb = | 15 stone 4 lb |
| 97.7 kg = | 215 lb = | 15 stone 5 lb |
| 98.2 kg = | 216 lb = | 15 stone 6 lb |
| 98.6 kg = | 217 lb = | 15 stone 7 lb |
| 99.1 kg = | 218 lb = | 15 stone 8 lb |
| 99.5 kg = | 219 lb = | 15 stone 9 lb |
| 100 kg = | 220 lb = | 15 stone 10 lb |
| 100.5 kg = | 221 lb = | 15 stone 11 lb |
| 100.9 kg = | 222 lb = | 15 stone 12 lb |
| 101.4 kg = | 223 lb = | 15 stone 13 lb |
| 101.8 kg = | 224 lb = | 16 stone 0 lb |
| 102.3 kg = | 225 lb = | 16 stone 1 lb |
| 102.7 kg = | 226 lb = | 16 stone 2 lb |
| 103.2 kg = | 227 lb = | 16 stone 3 lb |
| 103.6 kg = | 228 lb = | 16 stone 4 lb |
| 104.1 kg = | 229 lb = | 16 stone 5 lb |
| 104.5 kg = | 230 lb = | 16 stone 6 lb |
| 105.0 kg = | 231 lb = | 16 stone 7 lb |
| 105.5 kg = | 232 lb = | 16 stone 8 lb |
| 105.9 kg = | 233 lb = | 16 stone 9 lb |
| 106.4 kg = | 234 lb = | 16 stone 10 lb |
| 106.8 kg = | 235 lb = | 16 stone 11 lb |
| 107.3 kg = | 236 lb = | 16 stone 12 lb |
| 107.7 kg = | 237 lb = | 16 stone 13 lb |
| 108.2 kg = | 238 lb = | 17 stone 0 lb |
| 108.6 kg = | 239 lb = | 17 stone 1 lb |
| 109.1 kg = | 240 lb = | 17 stone 2 lb |
| 109.5 kg = | 241 lb = | 17 stone 3 lb |
| 110.0 kg = | 242 lb = | 17 stone 4 lb |
| 110.5 kg = | 243 lb = | 17 stone 5 lb |
| 110.9 kg = | 244 lb = | 17 stone 6 lb |
| 111.4 kg = | 245 lb = | 17 stone 7 lb |
| 111.8 kg = | 246 lb = | 17 stone 8 lb |
| 112.3 kg = | 247 lb = | 17 stone 9 lb |
| 112.7 kg = | 248 lb = | 17 stone 10 lb |
| 113.2 kg = | 249 lb = | 17 stone 11 lb |
| 113.6 kg = | 250 lb = | 17 stone 12 lb |
| 114.1 kg = | 251 lb = | 17 stone 13 lb |
| 114.5 kg = | 252 lb = | 18 stone 0 lb |
| 115.0 kg = | 253 lb = | 18 stone 1 lb |
| 115.5 kg = | 254 lb = | 18 stone 2 lb |
| 115.9 kg = | 255 lb = | 18 stone 3 lb |
| 116.4 kg = | 256 lb = | 18 stone 4 lb |
| 116.8 kg = | 257 lb = | 18 stone 5 lb |
| 117.3 kg = | 258 lb = | 18 stone 6 lb |
| 117.7 kg = | 259 lb = | 18 stone 7 lb |
| 118.1 kg = | 260 lb = | 18 stone 8 lb |
| 118.6 kg = | 261 lb = | 18 stone 9 lb |
| 119.1 kg = | 262 lb = | 18 stone 10 lb |
| 119.5 kg = | 263 lb = | 18 stone 11 lb |
| 120.0 kg = | 264 lb = | 18 stone 12 lb |
| 120.5 kg = | 265 lb = | 18 stone 13 lb |
| 120.9 kg = | 266 lb = | 19 stone 0 lb |
| 121.4 kg = | 267 lb = | 19 stone 1 lb |
| 121.8 kg = | 268 lb = | 19 stone 2 lb |
| 122.3 kg = | 269 lb = | 19 stone 3 lb |
| 122.7 kg = | 270 lb = | 19 stone 4 lb |
| 123.2 kg = | 271 lb = | 19 stone 5 lb |
| 123.6 kg = | 272 lb = | 19 stone 6 lb |
| 124.1 kg = | 273 lb = | 19 stone 7 lb |
| 124.5 kg = | 274 lb = | 19 stone 8 lb |
| 125.0 kg = | 275 lb = | 19 stone 9 lb |
| 125.5 kg = | 276 lb = | 19 stone 10 lb |
| 125.9 kg = | 277 lb = | 19 stone 11 lb |
| 126.4 kg = | 278 lb = | 19 stone 12 lb |
| 126.8 kg = | 279 lb = | 19 stone 13 lb |
| 127.3 kg = | 280 lb = | 20 stone 0 lb |
| 127.7 kg = | 281 lb = | 20 stone 1 lb |
| 128.2 kg = | 282 lb = | 20 stone 2 lb |
| 128.6 kg = | 283 lb = | 20 stone 3 lb |
| 129.1 kg = | 284 lb = | 20 stone 4 lb |
| 129.5 kg = | 285 lb = | 20 stone 5 lb |
| 130.0 kg = | 286 lb = | 20 stone 6 lb |
| 130.5 kg = | 287 lb = | 20 stone 7 lb |
| 130.9 kg = | 288 lb = | 20 stone 8 lb |
| 131.4 kg = | 289 lb = | 20 stone 9 lb |
| 131.8 kg = | 290 lb = | 20 stone 10 lb |
| 132.3 kg = | 291 lb = | 20 stone 11 lb |
| 132.7 kg = | 292 lb = | 20 stone 12 lb |
| 133.2 kg = | 293 lb = | 20 stone 13 lb |
| 133.6 kg = | 294 lb = | 21 stone 0 lb |
| 134.1 kg = | 295 lb = | 21 stone 1 lb |
| 134.5 kg = | 296 lb = | 21 stone 2 lb |
| 135.0 kg = | 297 lb = | 21 stone 3 lb |
| 135.5 kg = | 298 lb = | 21 stone 4 lb |
| 135.9 kg = | 299 lb = | 21 stone 5 lb |
| 136.4 kg = | 300 lb = | 21 stone 6 lb |
| 136.8 kg = | 301 lb = | 21 stone 7 lb |
| 137.3 kg = | 302 lb = | 21 stone 8 lb |
| 137.7 kg = | 303 lb = | 21 stone 9 lb |
| 138.2 kg = | 304 lb = | 21 stone 10 lb |
| 138.6 kg = | 305 lb = | 21 stone 11 lb |
| 139.1 kg = | 306 lb = | 21 stone 12 lb |
| 139.5 kg = | 307 lb = | 21 stone 13 lb |
| 140.0 kg = | 308 lb = | 22 stone 0 lb |
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