Page 489 - Trenchless Technology Piping Installation and Inspection

APPENDIX E

Conversion Table

From To Multiply by
Linear
mil in. 0.001
in. mm 25.4
ft m 0.3048
yards m 0.9144
ft in. 12
mile km 1.609
mile ft 5280
Area
in. 2 mm 2 645.16
ft 2 m 2 0.0929
sq yards m 2 0.8361
sq mi km 2 2.5889
acres km 2 4.0469 × 10 –3
ha km 2 0.01
acres ft 2 43,560
m 2 ha 10 4
Pressure
psi kN/m 2 6.895
psi atm 0.0680
psi kg/m 2 9.80665
psi Pa 6894.757
psi lb/ft 2 144
N/m 2 Pa 1
atm psi 14.696
atm Pa 101.325
bar Pa 10 5
bar psi 14.5

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