|
U.S.
Weights & Measures Tables
|
Linear
Measure
|
|
12 inches (in.)
|
= 1 foot (ft.)
|
| 1 mil |
= 0 .001 in. |
|
3 feet
|
= 1 yard (yd)
= 36"
|
| Surveyors'
Measurements |
| 1 link |
= 7.92 in |
|
1 rod (rd)
|
= 5 1/2 yards
= 16.5 ft.
|
| 1 chain |
= 4 rods
= 22 yds.
= 66 ft
= 100 links |
|
40 rods
|
= 1 furlong (fur)
= 220 yds
= 660 ft.
|
|
8 furlongs
|
= 1 statute mile
(mi.)
= 80 chains
= 1,760 yds
= 5,280 ft.
|
|
5,280 feet
|
= 1 statute or
land mile
|
| Nautical
Measurements |
| 1 fathom |
= 2 yds
= 6 ft. |
100 fathoms
|
= 1 cable length |
10 cables length
|
= 1 international nautical mile |
|
6,076.11549 feet
|
= 1 international
nautical mile
= length of a minute of longitude
at equator
= 1.1508 statute miles
|
|
3 nautical miles
|
= 1 league
|
| 1 knot |
= 1 nautical mile per hour
= 1.1508 statute miles per hour |
| 60 nautical miles |
= 1 degree of a great circle of earth (latitude) |
| 360 degrees |
= circumference of earth at equator
= 21,600 nautical miles
= 24,856.8 statute miles
|
| Area Measure |
| 1 sq ft. |
= 144 square inches |
| 1 sq yd |
= 9 sq. ft
= 1,296 sq in. |
| 1 sq rod |
= 30.25 square yards
= 272.25 sq ft.
= 625 sq. links |
| 1 acre |
= 160 square rods
= 4,840 sq yds
= 43,560 sq ft. |
| 1 sq mi. |
= 640 acres
= 1 section (of land) |
| 1 township |
= 6 miles square
= 36 sections
= 36 sq mi. |
|
Volumes
- Cubic
|
| 1,728 cubic inches = |
1 cu ft. |
| 27 cubic feet = |
1 cu yd |
|
|
| 1 pint (pt) |
= 4 gills (gi)
= 16 fluid ounces (oz)
= 28.875 cu in.
|
| 1 quart (qt) |
= 2 pints
= 57.75 cu in.
|
| 1 gallon (gal) |
= 4 quarts
= 231 cu in.
= 8 pts
= 32 gills |
| 1 cubic foot |
= 7.48 gallons |
| 1 barrel |
= 31.5 gallons
|
| 1 hogshead |
= 2 barrels |
| Apothecaries' Fluid Measure |
| 60 minims (min.) |
= 1 fluid dram (fl dr)
= 0.2256 cu in. |
| 8 fluid drams |
= 1 fluid ounce (fl oz)
= 1.8047 cu in. |
| 16 fluid ounces |
= 1 pt = 28.875 cu in.
= 128 fl drs |
| 2 pints |
= 1 qt
= 57.75 cu in.
= 32 fl oz
= 256 fl drs |
| 4 quarts |
= 1 gal
= 231 cu in.
= 128 fl oz
= 1,024 fl drs |
When necessary to distinguish the avoirdupois dram from the apothecaries'
dram, or to distinguish the avoirdupois
dram or ounce from the fluid dram or
ounce, or to distinguish the avoirdupois
ounce or pound from the troy or apothecaries'
ounce or pound, the word “avoirdupois”
or the abbreviation “avdp”
should be used in combination with the
name or abbreviation of the avoirdupois
unit. (The “grain” is the
same in avoirdupois, troy, and apothecaries'
weights.)
| Avoirdupois
Weight |
| 2711/32 grains |
= 1 dram (dr) |
| 16 drams |
= 1 oz
= 437 1/2 grains |
| 16 ounces |
= 1 lb
= 256 drams
= 7,000 grains |
| 100 pounds |
= 1 hundredweight (cwt)1 |
| 20 hundredweights |
= 1 ton (tn)
= 2,000 lbs1 |
| In “gross” or “long” measure, the following values
are recognized: |
| 112 pounds |
= 1 gross or long cwt1 |
| 20 gross or long hundredweights |
= 1 gross or
long ton
= 2,240 lbs1
|
1. When the terms “hundredweight”
and “ton” are used unmodified,
they are commonly understood to mean
the 100-pound hundredweight and the
2,000-pound ton, respectively; these
units may be designated “net”
or “short” when necessary
to distinguish them from the corresponding
units in gross or long measure.
When necessary to distinguish the dry pint or quart from the liquid pint or quart,
the word “dry” should
be used in combination with the name
or abbreviation of the dry unit.
|
Volume
- Dry Measure
|
| 1
quart |
= 2 pints
= 67.2006 cu in.
|
| 1 peck (pk) |
= 8 quarts
= 537.605 cu in.
= 16 pts |
| 1 bushel (bu) |
= 4 pecks
= 2,150.42 cu in.
= 32 qts |
| Apothecaries' Weight |
| 20 grains |
=1 scruple (s ap) |
| 3 scruples |
= 1 dram apothecaries' (dr ap)
= 60 grains |
| 8 drams apothecaries' |
= 1 ounce apothecaries' (oz ap)
= 24 scruples = 480 grains |
| 12 ounces apothecaries' |
= 1 pound apothecaries' (lb ap)
= 96 drams apothecaries'
= 288 scruples
= 5,760 grains |
| Units of Circular Measure |
| Second ('') = |
— |
| Minute (') = |
60 seconds |
| Degree (°) = |
60 minutes |
| Right angle = |
90 degrees |
| Straight angle = |
180 degrees |
| Circle = |
360 degrees |
| Troy Weight |
| 24 grains |
= 1 pennyweight (dwt) |
| 20 pennyweights |
= 1 ounce troy (oz t)
= 480 grains |
| 12 ounces troy |
= 1 pound troy (lb t)
= 240 pennyweights
= 5,760 grains |
| Gunter's or Surveyor's Chain Measure |
| 7.92 inches |
=1 link (li) |
| 100 links |
= 1 chain (ch)
= 4 rods
= 66 ft. |
| 80 chains |
=1 statute mile
= 320 rods
= 5,280 ft. |
|
