Atmospheres

Atmospheres atmospheres x 29.92 = inches of mercury at 0°C
atmospheres x 1013.25 = millibars
atmospheres x 760 = millimeters of mercury at 0°C
atmospheres x 14.7 = pounds/square inch

BTU/foot2

BTU/foot2 min. x 1.134 = joules/centimeter2 min.
BTU/foot2 min. x 0.271 = langleys/min.
BTU/foot2 min. x 189 = watts/meter2

Cubic feet/sec.

cubic feet/sec. x 0.02832 = cubic meters/sec.
cubic feet/sec. x 0.6463 = million gallons/day

Feet/sec.

feet/sec. x 1.097 = kilometers/hour
feet/sec. x 0.592 = knots
feet/sec. x 0.305 = meters/sec.
feet/sec. x 0.682 = miles/hour

Footcandles

footcandles (lumens/square foot) x 10.764 = lux (lumens/square meter)

Inches of mercury

inches of mercury x 33.864 = millibars
inches of mercury x 25.4 = millimeters of mercury
inches of mercury x 3.3864 = kilopascals
inches of mercury x 0.4912 = pounds/square inch
inches of mercury x 0.03342 = standard atmospheres

Joules/centimeter2 min.

joules/centimeter2 min. x 0.8821 = BTU/foot2 min.
joules/centimeter2 min. x 0.2389 = langleys/min.
joules/centimeter2 min. x 166.66 = watts/meter2

Kilometers/hour

kilometers/hour x 0.911 = feet/sec.
kilometers/hour x 0.540 = knots
kilometers/hour x 0.278 = meters/sec.
kilometers/hour x 0.621 = miles/hour

Kilopascals

kilopascals x 0.2953 = inches of mercury at 0°C
kilopascals x 10 = millibars
kilopascals x 7.50075 = millimeters of mercury at 0°C
kilopascals x 0.1450 = pounds/square inch

Knots

knots x 1.689 = feet/sec.
knots x 1.853 = kilometers/hour
knots x 0.515 = meters/sec.
knots x 1.152 = miles/hour

Langleys/min.

langleys/min. x 697.32 = watts/meter2
langleys/min. x 4.1855 = joules/centimeter2 min.
langleys/min. x 3.692 = BTU/foot2 min.

Lumens/square foot

lumens/square foot (footcandles) x 10.764 = lumens/square meter (lux)
lumens/square meter (lux) x 0.0929 = lumens/square foot (foot candles)

Meters/sec.

meters/sec. x 3.281 = feet/sec.
meters/sec. x 3.600 = kilometers/hour
meters/sec. x 1.943 = knots
meters/sec. x 2.237= miles/hour

Miles/hour

miles/hour x 1.467 = feet/sec.
miles/hour x 1.609 = kilometers/hour
miles/hour x 0.868 = knots
miles/hour x 0.447 = meters/sec.

Millibars

millibars x 0.02953 = inches of mercury
millibars x 0.0010197 = kilograms/centimeter2
millibars x 0.100 = kilopascals
millibars x 0.7500616 = millimeters of mercury
millibars x 0.014504 = pounds/square inch
millibars x 0.0009869 = standard atmospheres

Millimeters of mercury

millimeters of mercury x 0.03937 = inches of mercury
millimeters of mercury x 0.13332 = kilopascals
millimeters of mercury x 1.33322 = millibars
millimeters of mercury x 0.01934 = pounds/square inch
millimeters of mercury x 0.001316 = standard atmospheres

Million gallons/day

million gallons/day x 1.54723 = cubic feet/second

Watts/meter2

watts/meter2 x 0.00529 = BTU/foot2 min.
watts/meter2 x 0.006 = joules/centimeter2 min.
watts/meter2 x 0.00143 = langleys/min.