Linear Conversion (input Quantity)
mile
Nautical mile
Nautical league
furlong
chain
rod
yard
feet
inch
km
hm
metre
dm
cm
mm
Light Second
Light year (Julian)
Light year (Mean Tropical)
=>
(answer here)
mile
Nautical mile
Nautical league
furlong
chain
rod
yard
feet
inch
km
hm
metre
dm
cm
mm
Light Second
Light year (Julian)
Light year (Mean Tropical)
Area Conversion (Input Quantity)
sq. miles
acres
sq. yards
sq. feet
sq. km
hectares
ares
sq. m
sq. dm
sq. cm
sq. mm
talangwah
ngarn
rai
=>
(answer here)
sq. miles
acres
sq. yards
sq. feet
sq. km
hectares
ares
sq. m
sq. dm
sq. cm
sq. mm
talangwah
ngarn
rai
Volume Conversion (Input Quantity)
gallons
quarts
pints
gills
cu. inches
fl. oz.
US fl. oz.
fl. drachms
US gal
US pint
cu. yard
cu. feet
cu. inch
cu. m
litres
cu. dm
cc
ml
=>
(answer here)
gallons
quarts
pints
gills
cu. inches
fl. oz.
US fl. oz.
fl. drachms
US gal
US pint
cu. yard
cu. feet
cu. inch
cu. m
litres
cu. dm
cc
ml
Weight Conversion (Input Quantity)
ton
cwt
US ton
quarters
stone
lb.
oz.
drams
grains
tonne
kg
g
mg
=>
(answer here)
ton
cwt
US ton
quarters
stone
lb.
oz.
drams
grains
tonne
kg
g
mg
Pressure Conversion (Input Quantity)
atmosphere [standard]
atmosphere [technical]
attobar
attopascal
bar
barad
barye
centibar
centihg
centimeter of mercury [0 °C]
centimeter of water [4 °C]
centipascal
centitorr
decibar
decipascal
decitorr
dekabar
dekapascal
dyne/square centimeter
exabar
exapascal
femtobar
femtopascal
foot of air [0 °C]
foot of air [15 °C]
foot of head
foot of mercury [0 °C]
foot of water [4 °C]
gigabar
gigapascal
gram-force/square centimeter
hectobar
hectopascal
inch of air [0 °C]
inch of air [15 °C]
inch of mercury [0 °C]
inch of water [4 °C]
kilobar
kilogram-force/square centimeter
kilogram-force/square meter
kilogram-force/square millimeter
kilonewton/square meter
kilopascal
kilopond/square centimeter
kilopond/square meter
kilopond/square millimeter
kip/square foot
kip/square inch
megabar
meganewton/square meter
megapascal
meter of air [0 °C]
meter of air [15 °C]
meter of head
microbar
micrometer of mercury [0 °C]
micrometer of water [4 °C]
micron of mercury [0 °C]
micropascal
millibar
millihg
millimeter of mercury [0 °C]
millimeter of water [4 °C]
millipascal
millitorr
nanobar
nanopascal
newton/square meter
newton/square millimeter
ounce/square inch
pascal
petabar
petapascal
picobar
picopascal
pieze
pound/square foot
pound/square inch [absolute]
poundal/square foot
sthene/square meter
technical atmosphere
terabar
terapascal
ton/square foot [long]
ton/square foot [short]
ton/square inch [long]
ton/square inch [short]
ton/square meter
torr
Water Column [centimeter]
Water Column [inch]
Water Column [millimeter]
yoctobar
yoctopascal
yottabar
yottapascal
zeptobar
zeptopascal
zettabar
zettapascal
=>
(answer here)
atmosphere [standard]
atmosphere [technical]
attobar
attopascal
bar
barad
barye
centibar
centihg
centimeter of mercury [0 °C]
centimeter of water [4 °C]
centipascal
centitorr
decibar
decipascal
decitorr
dekabar
dekapascal
dyne/square centimeter
exabar
exapascal
femtobar
femtopascal
foot of air [0 °C]
foot of air [15 °C]
foot of head
foot of mercury [0 °C]
foot of water [4 °C]
gigabar
gigapascal
gram-force/square centimeter
hectobar
hectopascal
inch of air [0 °C]
inch of air [15 °C]
inch of mercury [0 °C]
inch of water [4 °C]
kilobar
kilogram-force/square centimeter
kilogram-force/square meter
kilogram-force/square millimeter
kilonewton/square meter
kilopascal
kilopond/square centimeter
kilopond/square meter
kilopond/square millimeter
kip/square foot
kip/square inch
megabar
meganewton/square meter
megapascal
meter of air [0 °C]
meter of air [15 °C]
meter of head
microbar
micrometer of mercury [0 °C]
micrometer of water [4 °C]
micron of mercury [0 °C]
micropascal
millibar
millihg
millimeter of mercury [0 °C]
millimeter of water [4 °C]
millipascal
millitorr
nanobar
nanopascal
newton/square meter
newton/square millimeter
ounce/square inch
pascal
petabar
petapascal
picobar
picopascal
pieze
pound/square foot
pound/square inch [absolute]
poundal/square foot
sthene/square meter
technical atmosphere
terabar
terapascal
ton/square foot [long]
ton/square foot [short]
ton/square inch [long]
ton/square inch [short]
ton/square meter
torr
Water Column [centimeter]
Water Column [inch]
Water Column [millimeter]
yoctobar
yoctopascal
yottabar
yottapascal
zeptobar
zeptopascal
zettabar
zettapascal
Angle Conversion (Input Quantity)
degrees
(arc) minutes (or moa)
(arc) seconds
radians
grad (or gon)
mgon
mil US WWII
mil NATO
=>
(answer here)
degrees
(arc) minutes (or moa)
(arc) seconds
radians
grad (or gon)
mgon
mil US WWII
mil NATO
Temperature Conversion (Input Quantity)
Centigrade
Farenheit
Kelvin
=>
(answer here)
Centigrade
Farenheit
Kelvin
For all the above use this for precision adjustment(sort of rounding, 6 is good) avoids .999999 type answers
Degrees Minutes Seconds =>
<= Decimal Degrees (values in degrees minutes seconds will be automatically adjusted modulo 360, 60 and 60 respectively)

Convert to and from Decimal Latitude and Longitude AND GRS-80 zone and Grid coordinates using Redfearn formula
Note: entering silly values in these cells may give you coordinates in an alternate universe.

Decimal Latitude Decimal Longitude

GRS-80 Zone Easting Northing

See an implementation of this with google maps API which I am experimenting with here . Hint go there on your mobile phone to use geolocation

IMPERIAL

Length
Area
Capacity
Weight
1 mile = 1760 yards
1 mile = 8 furlong
1 furlong = 10 chains
1 chain = 4 rods
1 rod = 5 1/2 yards
1 yard = 3 feet
1 foot = 12 inches
1 sq. mile = 640 acres
1 acre = 4840 sq. yard
1 sq. yard = 9 sq. feet
1 sq. foot = 144 sq. inches
1 gal. = 4 quarts
1 quart = 2 pints
1 pint = 4 gills
1 pint = 34.6774 inchs^{3}
1 gill = 5 fl. oz.
1 fl. oz. = 8 fl. drachms
1 US gal = 0.8327 gal
1 US pint = 0.8327 pint
1 US pint = 16 fl. oz.
1 yard^{3} = 27 feet^{3}
1 foot^{3} = 1728 inches^{3}
1 ton = 20 cwt
1 ton = 2240 lb.
1 ton = 1.12 US ton
1 cwt = 4 quarters
1 quarter = 2 stone.
1 stone = 14 lb.
1 lb. = 16 oz.
1 oz. = 16 drams
1 oz. = 437.5 grains
1 US ton = 2000 lb.

METRIC

Length
Area
Capacity
Weight
1 km = 10 hm
1 km = 1000 m
1 hm = 100 m
1 m = 10 dm
1 dm = 10 cm
1 cm = 10 mm
1 km^{2} = 100 hectares
1 hectare = 100 ares
1 are = 100 m^{2}
1 m^{2} = 100 dm^{2}
1 dm^{2} = 100 cm^{2}
1 cm^{2} = 100 mm^{2}
1 m^{3} = 1000 litres
1 litre = 1 dm^{3}
1 litre = 1000 cc
1 litre = 1000 ml
1 tonne = 1000 kg
1 kg = 1000 g
1 g = 1000 mg

IMPERIAL to METRIC

Length
Area
Capacity
Weight
1 mile = 1.609 km
1 yard = 0.9144 m
1 foot = 0.3048 m
1 inch = 25.4 mm
1 sq. mile = 2.59 km^{2}
1 acre = 0.4047 hectares
1 acre = 4046.86 m^{2}
1 sq. yard = 0.8361 m^{2}
1 sq. foot = 0.0929 m^{2}
1 sq. inch = 645.16 mm^{2}
1 gallon = 4.5461 litres
1 US gallon = 3.785 litres
1 pint = 0.5683 litres
1 cu. inch = 16.3871 cm^{3}
1 ton = 1.016 tonnes
1 lb. = 0.4536 kg
1 oz. = 28.3495 g
1 US ton = 0.9072 tonnes

METRIC to IMPERIAL

Length
Area
Capacity
Weight
1 km = 0.6214 miles
1 m = 1.0936 yards
1 m = 3.2808 feet
1 mm = 0.0394 inches
1 km^{2} = 0.3861 mile^{2}
1 km^{2} = 247.105 acres
1 hectares = 2.4711 acres
1 m^{2} = 10.7639 feet^{2}
1 mm^{2} = 0.0016 inches^{2}
1 litre = 0.22 gal.
1litre = 0.2642 US gal.
1 litre = 1.7598 pint
1 m^{3} = 219.969 gal.
1 m^{3} = 35.3147 feet^{3}
1 tonne = 0.9842 ton
1 tonne = 1.1023 US ton
1 kg = 2.2046 lb.
1 kg = 35.274 oz.

TEMPERATURE

deg. C to deg. F
deg. F to deg. C
deg. C x 9/5 + 32 = deg. F
(deg. F - 32) x 5/9 = deg. C