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**This program converts English and American measures to metric units**

● Conversions of weight and mass units ●Weight conversion m |

**Conversion: units of volume, measures of capacity, and the weight of water**

**Conversion: milliliter in liter and liter in milliliter and more**

**Conversions of many more weight and mass units**

1 long ton = 2240 lb exactly. (This amount is called a long ton in US customary units) 1 hundredweight = 112 lb exactly. (This amount is called a long hundredweight in US customary units) 1 ounce (oz) = 16 drams exactly = 437.5 grain exactly = 0.028 349 523 125 kg 1 pound (lb) = 16 oz exactly = 7000 grain exactly = 0.453 592 37 kg 1 grain (gr) = 64.79891 mg exactly 1 dram (dr) = 27.34375 grain exactly 1 scruple (s ap) = 20 grain exactly 1 pennyweight (dwt) = 24 gain exactly 1 dram apothecaries (dr ap) = 3 s ap exactly 1 ounce apothecaries (oz ap) or 1 ounce troy (oz t) = 8 dr ap exactly = 480 grain exactly 1 pound apothecaries (lb ap) or pound troy (lb t) = 5760 grain (gr) |

**Weight and mass units conversion chart**

**Sorted from light to heavy**

Name of mass unit, m |
Symbol |
Definition |
Relation to SI unit kg |

kilogram | kg | - | kilogram = SI base unit |

electron rest mass | me | - | ≈ 9.109 381 88×10^{−31} ±72×10^{−39} kg |

atomicunit of mass | au | - | ≈ 9.109 381 88×10^{−31} ±72×10^{−39} kg |

unifiedatomic mass unit | amu | - | ≈ 1.660 538 73×10^{−27} ±13×10^{−35} kg |

dalton | Da | - | ≈ 1.660 902 10×10^{−27} ±13×10^{−35} kg |

gamma | γ | - | ≡ 1 μg |

point | - | ≡ 1/100 kt (metric) | = 2 mg |

mite | - | ≡ 1/20 gr | = 3.239 945 5 mg |

mite (metric) | - | ≡ 1/20 g | = 50 mg |

grain | gr | - | ≡ 64.798 91 mg |

crith | - | - | ≈ 89.9349 mg |

carat (metric) | kt | - | ≡ 200 mg |

carat | kt | ≡ 3 1/6 gr | ≈ 205.196 548 333 mg |

sheet | - | ≡ 1/700 lb av | = 647.9891 mg |

scruple (avoirdupois) | s av | ≡ 20 gr | = 1.295 978 2 g |

pennyweight | dwt; pwt | ≡ 1/20 oz t | = 1.555 173 84 g |

dram (avoirdupois) | dr av | ≡ 27 11/32 gr | = 1.771 845 195 312 5 g |

dram (apothecary; troy) | dr t | ≡ 60 gr | = 3.887 934 6 g |

hyl (CGS unit) | - | ≡ 1 gee × 1 g × 1 s²/m | = 9.806 65 g |

ounce (avoirdupois) | oz av | ≡ 1/16 lb | = 28.349 523 125 g |

assayton (short) | AT | ≡ 1 mg × 1 sh tn ÷ 1 oz t | ≈ 29.166 667 g |

ounce (apothecary; troy) | oz t | ≡ 1/12 lb t | = 31.103 476 8 g |

assay ton (long) | AT | ≡ 1 mg × 1 long tn ÷ 1 oz t | ≈ 32.666 667 g |

mark | - | ≡ 8 oz t | = 248.827 814 4 g |

pond (troy) | lb t | ≡ 5760 grains | = 0.373 241 721 6 kg |

pound (avoirdupois) | lb av | ≡ 7000 grains | = 0.453 592 37 kg |

pond (metric) | - | - | ≡ 500 g |

clove | - | ≡ 8 lb av | = 3.628 738 96 kg |

stone | st | ≡ 14 lb av | = 6.350 293 18 kg |

hyl (MKS unit) | - | ≡ 1 gee × 1 kg × 1 s²/m | = 9.806 65 kg |

quarter (Imperial) | - | ≡ 1/4 long cwt = 2 st = 28 lb av | = 12.700 586 36 kg |

slug; geepound | slug | ≡ 1 gee × 1 lb av × 1 s²/ft | ≈ 14.593 903 kg |

bag (Portland cement) | - | ≡ 94 lb av | = 42.637 682 78 kg |

short hundredweight; cental | sh cwt | ≡ 100 lb av | = 45.359 237 kg |

long hundredweight | long cwt or cwt | ≡ 112 lb av | = 50.802 345 44 kg |

bag (coffee) | - | ≡ 60 kg | = 60 kg |

quintal (metric) | q | - | ≡ 100 kg |

wey | - | ≡ 252 lb = 18 st | = 114.305 277 24 kg |

long quarter | - | ≡ ¼ long tn | = 254.011 727 2 kg |

kip | kip | ≡ 1000 lb av | = 453.592 37 kg |

short ton | sh tn | ≡ 2000 lb | = 907.184 74 kg |

tonne (mts unit) | t | - | ≡ 1000 kg |

long ton | long tn or ton | ≡ 2240 lb | = 1016.046 908 8 kg |

barge | - | ≡ 22 ½ sh tn | = 20411.656 65 kg |

Zentner | Ztr. | ≡ 100 Pfund | = 50 kg |

In physics, the pound of mass is sometimes written **lbm** to distinguish it from the pound-force (**lbf**).

It should not be read as the mongrel unit "pound metre".

1 long ton = 2240 lb exactly.
1 hundredweight = 112 lb exactly.

1 ounce (oz) = 16 dr exactly = 437.5 gr exactly = 0.028 349 523 125 kg exactly

1 pound (lb) = 16 oz exactly = 7000 gr exactly = 0.453 592 37 kg exactly

1 grain (gr) = 64.79891 mg exactly

1 dram (dr) = 27.34375 gr exactly

1 scruple (s ap) = 20 gr exactly

1 pennyweight (dwt) = 24 gr exactly

1 dram apothecaries (dr ap) = 3 s ap exactly

1 ounce apothecaries (oz ap) or ounce troy (oz t) = 8 dr ap exactly = 480 gr exactly

1 pound apothecaries (lb ap) or pound troy (lb t) = 5760 grain (gr)

In physics, the pound of mass is sometimes written **lbm** to distinguish it from the
pound-force (**lbf**).

It should not be read as the mongrel unit "pound metre".

Unit |
Comments to distance, length, width, breath, and height measures |

Metric ton(t) |
A metric ton is equal to 1,000,000 grams = 1,000 kilograms = 2,204 pounds = 1.102 U.S. short tons. |

Kilogram(kg, kilos) |
The prefix "kilo" means 1,000, so there are 1,000 grams in a kilogram. One kg = 2.205 pounds. A cube of water 10 centimeters on each side has a mass of 1 kg. |

Gram(g, gm) |
A gram is 1/1000th of a kilogram. A gram is equal to the mass of water contained in a cube one cm on each side (One cubic centimeter = 1 cc = 1 cm^{3} of water weighs 1 gram). |

Carat(c) |
Used primarily for gemstones, one carat = 0.2 gram = 0.00705 ounce. There are 5 carats in a gram. |

Milligram(mg, mgs) |
The prefix "milli" means 1/1000. Therefore, 1 milligram = 0.001 grams, or 1000 mg = 1 g. 1 mg = 10^{-6} kg. 1 mg = 3.52·10^{−5} ounces. |

Microgram(mg, mgs) |
The prefix "micro" means 1/1,000,000 = 10^{−6}. Therefore, 1 microgram = 0.001 milligram = 0.000001 grams, or 1,000,000 mg = 1 g. 1 mg =
10^{-9} kg. |

Nanogram(ng, ngs) |
The prefix "nano" means 1/1,000,000,000 = 10^{−9}, so 1,000,000,000 ng = 10^{9} ng = 1 g. 1 ng = 1,000 picograms. 1000 ng = 1 microgram. 1 ng = 10^{−12} kg. |

Picogram(pg, pgs) |
The prefix "pico" means 1/1,000,000,000,000 = 10^{−12}, so 1,000,000,000,000 pg = 10^{12} pg = 1 g. 1 pg = 1,000 femtograms. 1000 pg = 1 nanogram. 1 ng = 10^{−15} kg. |

Femtogram(fg, fgs) |
The prefix "femto" means 1/1,000,000,000,000,000 = 10^{−15}, so 1,000,000,000,000,000 fg = 10^{15} pg = 1 g. 1 fg = 1,000 attograms. 1000 fg = 1 picogram. 1 fg = 10^{−18} kg. |

Attogram(ag, ags) |
The prefix "atto" means 1/1,000,000,000,000,000,000 = 10^{−18}, so 1,000,000,000,000,000,000 ag = 10^{18} ag = 1 g. 1000 ag = 1 femtogram. 1 ag = 10^{−21} kg. For comparison, one atom of carbon weighs approximately 2·10^{−23} g so 50,000 atoms of carbon weigh roughly 1 attogram. |

Zeptogram(zg, zgs) |
The prefix "zepto" means 1/1,000,000,000,000,000,000,000 = 10^{−21}, so 1,000,000,000,000,000,000,000 zg = 10^{21} zg = 1 g. 1000 zg = 1 attogram. 1 zg = 10^{−24} kg. For comparison, one atom of platinum weighs approximately 3.02·10^{−22} g so 3 atoms of platinum weigh roughly 1 zeptogram. See also atomic mass unit. |

Ton(long ton) |
In the U.S., a long ton = 1.12 short tons = 2,240 pounds = 1.016 metric tons. |

Ton(short ton) |
In the U.S., a ton is 2,000 pounds = 907.18 kilograms = 0.907 metric tons. This is the "ton" that most Americans use. |

Pound(lb, lbs) |
A pound is an English unit of weight. There are 16 ounces or 7,000 grains (a less common unit) or 453.592 grams in a pound. |

Ounce(oz, oz avdp) |
An ounce is equal to 437.5 grains, 1/16 of a pound, or 28.350 grams. The system of having 16 ounces in a pound is called the avoirdupois system. Note:
not equal to a fluid ounce which is a measureof volume. and 12 ounces = 1 pound. That means one avoirdupois ounce is equal to 0.910 troy ounce. |

Dram(dr, dr avdp) |
Fairly uncommon. There are 256 drams in a pound. 1 dram = 27.34 grains = 1/16 ounces. Caution: apothecary drams and fluid drams are different from the avoirdupois dram. |

Grain(lb, lbs) |
Fairly uncommon. There are 480 grains in a troy ounce and 7,000 grains in a pound. One grain = 64.799 milligrams = 0.324 carats. |

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