# Conversion/Equivalency Factors

## "A" Conversion/Equivalency Factors

Original Unit Multiplied
By
Conversion
Factor
Equals Final Unit
acres x 0.404 69 = hectares or square hectometers
acres x 10 = square chains (Gunter's)
acres x 43,560 = square feet (ft2)
acres x 100,000 = square links (Gunter's)
acres x 4,046.873 = square meters (m2)
acres x 1.562E–03 = square miles (mi2)
acres x 4,840 = square yards (yd2)
acre–feet x 43,560 = cubic feet (ft3 or cf)
acre–feet x 325,900 = gallons (gal)
ampere–hours x 3,600 = coulombs (C)
ampere–turns x 1.25 = gilberts
angstrom units x 3.94E–06 = inches (in)
angstrom units x 1.0E–10 = meters (m)
angstrom units x 1.0E–04 = microns
astronomical units x 149,597,900 = kilometers (km)
atmospheres x 1.03 = kilograms/square centimeter
atmospheres x 10,332 = kilograms/square meter
atmospheres x 14.70 = pounds/square inch
atmospheres x 1.05 = tons/square foot
atmospheres x 7.348E–03 = tons/square inch
atmospheres of mercury [at 0 degrees Celsius (°C)] x 29.92 = inches of mercury [at 0 degrees Celsius (°C)]
atmospheres of mercury x 76 = centimeters of mercury
atmospheres of water [at 4 degrees Celsius (°C)] x 33.90 = feet of water [at 4 degrees Celsius (°C)]