Lets just take a look at how simple the British Imperial System that everyone loves is:
British Imperial and U.S. Customary systems of weights and measures
| Standard Measures | |
| short ton | 20 short hundredweight, or 2,000 pounds |
| long ton | 20 long hundredweight, or 2,240 pounds |
| short hundredweight | 100 pounds, or 0.05 short ton |
| long hundredweight | 112 pounds, or 0.05 long ton |
| pound | 16 ounces, or 7,000 grains |
| ounce | 16 drams, 437.5 grains, or 0.0625 pound |
| dram | 27.344 grains, or 0.0625 ounce |
| grain | 0.037 dram, or 0.002286 ounce |
| stone | 0.14 short hundredweight, or 14 pounds |
| Troy Measures for weighing precious metals | |
| pound | 12 ounces, 240 pennyweight, or 5,760 grains |
| ounce | 20 pennyweight, 480 grains, or 0.083 pound |
| pennyweight | 24 grains, or 0.05 ounce |
| grain | 0.042 pennyweight, or 0.002083 ounce |
| Apothecaries’ Measures (for drugs) | |
| pound | 12 ounces, or 5,760 grains |
| ounce | 8 drams, 480 grains, or 0.083 pound |
| dram | 3 scruples, or 60 grains |
| scruple | 20 grains, or 0.333 dram |
| grain | 0.05 scruple, 0.002083 ounce, or 0.0166 dram |
| U.S. liquid measures | |
| gallon | 4 quarts |
| quart | 2 pints |
| pint | 4 gills |
| gill | 4 fluid ounces |
| fluid ounce | 8 fluid drams |
| fluid dram | 60 minims |
| minim | 1/60 fluid dram |
| U.S. dry measures | |
| bushel | 4 pecks |
| peck | 8 quarts |
| quart | 2 pints |
| pint | 1/2 quart |
| British liquid and dry measures | |
| bushel | 4 pecks |
| peck | 2 gallons |
| gallon | 4 quarts |
| quart | 2 pints |
| pint | 4 gills |
| gill | 5 fluid ounces |
| fluid ounce | 8 fluid drams |
| fluid dram | 60 minims |
| minim | 1/60 fluid dram |
| Length | |
| nautical mile | 6,076 feet, or 1.151 miles |
| mile | 5,280 feet, 1,760 yards, or 320 rods |
| furlong | 660 feet, 220 yards, or 1/8 mile |
| rod | 5.50 yards, or 16.5 feet |
| fathom | 6 feet, or 72 inches |
| yard | 3 feet, or 36 inches |
| foot | 12 inches, or 0.333 yard |
| inch | 0.083 foot, or 0.028 yard |
| Area | |
| square mile | 640 acres, or 102,400 square rods |
| acre | 4,840 square yards, or 43,560 square feet |
| square rod | 30.25 square yards, or 0.00625 acre |
| square yard | 1,296 square inches, or 9 square feet |
| square foot | 144 square inches, or 0.111 square yard |
| square inch | 0.0069 square foot, or 0.00077 square yard |
| Volume | |
| cubic yard | 27 cubic feet, or 46,656 cubic inches |
| cubic foot | 1,728 cubic inches, or 0.0370 cubic yard |
| cubic inch | 0.00058 cubic foot, or 0.000021 cubic yard |
| acre-foot | 43,560 cubic feet, or 1,613 cubic yards |
| board foot | 144 cubic inches, or 1/12 cubic foot |
| cord | 128 cubic feet |
This is why Great Britain began adopting the metric system in 1965. After all, Metric is just too damn complicated.
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