S
• Sack = 3 bushels, 0.10911 cubic meter.
• Scruple (apothecary) = 0.002857143
avoirdupois pound, 0.003472222 apothecary or
troy pound, 0.0457143 avoirdupois ounce, 0.041667
apothecary or troy ounce, 0.7314286 avoirdupois
dram, 1/3 apothecary or troy dram, 0.833333
pennyweight, 20 grains, 1.2959784 grams, 1295.9784
milligrams.
• Seam (Br) = 8 bushels, 0.29095 cubic
meter.
• Second (angle) = 4.84814x10^-6 radian,
4.84814 microradians, 2.7778x10^-4 degree, 0.016667
minute.
• Second (time, mean solar) = 1.1574x10^-5
mean solar day, 1.1606x10^-5 sidereal day, 2.7778x10^-4
mean solar hour, 0.016667 mean solar minute,
1.00273791 sidereal seconds.
• Second (time, sidereal) = 0.997270
mean solar second.
• Sign = 30 degrees.
• Skein = 360 feet, 120 yards, 109.73
meters.
• Slug = 1 geepound, 32.174 pounds,
14.594 kilograms.
• Space, Entire (solid angle) = 4 Pi,
12.5664 steradians.
• Spherical Right Angle = 0.125 sphere,
0.25 hemisphere, Pi/2 steradians.
• Square Centimeter = 1x10^24 barns,
2.47104x10^-7 square chain, 3.95367x10^-6 square
rod, 1.1960x10^-4 square yard, 0.0010764 square
foot, 0.00247104 square link, 0.15500 square
inch, 1.5500x10^5 square mils, 1.9735x10^5 circular
mils, 127.32 circular millimeters, 1x10^-4 square
meter, 0.01 square decimeter, 100 square millimeters.
• Square Chain (Gunter's) = 1.5625x10-4
square mile, 16 square rods, 484 square yards,
4356 square feet, 1x10^4 square links, 6.27264x10^5
square inches, 404.6873 square meters.
• Square Decimeter = 15500 square inch,
0.01 square meter, 100 square centimeters.
• Square Degree = 3.0462x10^-4 steradian.
• Square Dekameter = 0.02471044 acre,
119.60 square yards, 1 are, 100 square meters.
• Square Foot = 3.58701x10^-8 square
mile, 2.29568x10^-5 acre, 2.29568x10^-4 square
chain, 0.00367309 square rod, 1/9 square yard,
2.29568 square links, 144 square inches, 9.290341x10^-4
are, 0.09290341 square meter, 929.0341 square
centimeters.
• Square Foot (Br) = 0.90290289 square
meter.
• Square Hectometer = 2.471044 acres,
2.471058 acres (Br), 1x10^4 square meters.
• Square Inch = 1.59423x10^-6 square
chain, 1/144 square foot, 1/1296 square yard,
0.0159423 square link, 1x10^6 square mils, 1.27324x10^6
circular mils, 6.4516258x10^-4 square meter,
6.4516258 square centimeters, 645.16258 square
millimeters.
• Square Kilometer = 0.3861006 square
mile, 247.1044 acres, 247.1058 Br acres, 1.1960x10^6
square yards, 1.0764x10^7 square feet, 1x10^6
square meters.
• Square Link (Gunter's) = 1x10^-5
acre, 1x10^-4 square chain, 0.0016 square rod,
0.0484 square yard, 0.4356 square foot, 62.7264
square inches, 0.040469 square meter, 404.69
square centimeters.
• Square Meter = 3.8610x10^-7 square
mile, 2.471044x10^-4 acre, 2.471058x10^-4 Br
acre, 0.00247104 square Gunter's chain, 0.039537
square rod, 1.195985 square yards, 1.195992
square Br yards, 10.76387 square feet, 10.76390
square Br feet, 24.7104 square Gunter's links,
1550.0 square inches, 1x10^-6 square kilometer,
1x10^-4 hectare, 0.01 are, 1 centare, 1x10^4
square centimeters, 1x10^6 square millimeters.
• Square Mil = 1x10^-6 square inch,
1.2732 circular mils, 6.4516x10^-6 square centimeter,
6.4516x10^-4 square millimeter.
• Square Mile = 640 acres, 6400 square
chains, 1.02400x10^5 square rods, 3.0976x10^6
square yards, 2.78784x10^7 square feet, 2.589998
square kilometers, 258.9998 hectares, 2.589998x10^6
square meters.
• Square Millimeter = 0.0015500 square
inch, 1550.0 square mils, 1973.5 circular mils,
1x10^-6 square meter, 0.01 square centimeter,
1.2732 circular millimeters.
• Square Perch = 1/160 acre, 30.25
square yards, 25.293 square meters.
• Square Pole (Br) = 30.25 square yards.
• Square Rod = 9.765625x10^-6 square
mile, 0.00625 acre, 0.0625 square Gunter's chain,
30.25 square yards, 272.25 square feet, 625
square Gunter's links, 3.9204x10^4 square inches,
0.0025293 hectare, 25.293 square meters.
• Square Yard = 3.22831x10^-7 square
mile, 2.06612x10^-4 acre, 0.00206612 square
chain, 0.0330579 square rod, 9 square feet,
20.6612 square link, 1296 square inches, 8.36131x10^-5
hectare, 0.0083613 square dekameter, 0.836131
square meter, 8361.31 square centimeters.
• Square Yard (Br) = 2.0661x10^-4 Br
acre, 8.2645x10^-4 rood, 0.836126 square meter.
• Steradian = 0.25 of the solid angle
around a point, 0.07958 sphere, 0.15916 hemisphere,
0.6366 spherical right angle, 3282.8 square
degrees.
• Stere = 0.1 dekastere, 1 cubic meter,
10 decisteres, 999.973 liters.
• Stoke (viscosity) = 1 gram per centimeter
per second per density (at a given temperature,
100 centistokes.
• Stone (Br) = 14 avoirdupois pounds,
6.35 kilograms.
• Strike (Br) = 2 dry bushels, 0.072738
cubic meter.
T
• Toise (Fr) = 6 Paris feet, 1.9490365
meters (legal), 1.949090 meters (measured).
• Ton (long) = 1.12 short tons, 22.4
short hundredweights, 2240 avoirdupois pounds,
2722.22 apothecary or troy pounds, 3.5840x10^4
avoirdupois ounces, 1.0160470 metric tons, 1016.0470
kilograms.
• Ton (short) = 0.89286 long ton, 20
short hundredweights, 2000 avoirdupois pounds,
2430.56 apothecary or troy pounds, 3.2000x10^4
avoirdupois ounces, 2.91666x10^4 apothecary
or troy ounces, 0.907185 metric ton, 907.185
kilograms.
• Tonne = 1 metric ton, 0.984206 long
ton, 1.10231 short tons, 22.046223 short hundredweights,
2204.62 avoirdupois pounds, 2679.23 apothecary
or troy pounds, 3.527396x10^4 avoirdupois ounces,
1000 kilograms, 1x10^6 grams.
• Township = 36 square miles, 2.3040x10^4
square yards, 93.240 square kilometers.
• Tun = 252 gallons.
W
• Watt = 0.001 kilowatt, 0.0013410
horse power, 0.0013596 horse power (metric)
or cheval vapeur, 0.01433 kilogram-calorie (mean)
per minute, 0.056896 BTU (mean) per minute,
0.73756 foot-pound per second, 1 joul per second,
44.254 foot-pounds per minute, 1x10^7 ergs per
second.
• Watt (Int'l) = 1.00032 watt (absolute).
• Watt of maximum visibility radiation
= 668 lumens.
• Watt-hour = 0.001 kilowatt-hour,
0.0013410 horse power-hour, 0.86001 kilogram-calorie
(mean), 3.4130 BTU (mean), 367.10 kilogram-meters,
860.01 gram-calories (mean), 2655.3 foot-pounds,
3600 joules.
• Week = 168 hours, 1.0080x10^4 minutes,
6.04800x10^5 seconds.
• Wey (Br, capacity) = 40 bushels (variable).
• Wey (Br, mass) = 252 pounds (variable).
Y
• Yard = 5.68182x10^-4 mile, 0.00454545
furlong, 0.0454545 Gunter's chain, 0.181818
rod, 3 feet, 4.54545 Gunter's links, 36 inches,
3600/3937 meter, 91.440183 centimeters.
• Yard (Br) = 0.18182 Br pole, 4 Br
linear quarters, 0.9143992 meter, 91.43992 centimeters,
1.420212x10^6 wavelengths of red line of cadmium.
• Year (leap) = 366 days, 8784 hours.
• Year (tropical, mean solar) = 365.2422
mean solar days, 8765.8128 mean solar hours,
3.15569x10^7 mean solar seconds.
• Year (sidereal) = 365.256 mean solar
days, 8766.144 mean solar hours.
