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0 - Convert-Units IP-SI

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									Energy Efficient Building Design                     College of Architecture      Illinois Institute of Technology (IIT) Chicago
     Input         Multiply    Output        Input             Multiply    Output           Input        Multiply   Output
     Units         By          Units         Units             By          Units            Units        By         Units
     ( k = 1,000 , m = 1,000,000 )
     Length                                  Calorific Values (volume basis)                Horse-Power
     ft            0.3048      m             btu/ft3            37.259        k-J/m3        hp boiler 13.15          hp electric
     in            2.54        cm            btu/ft3            8.899         k-cal/m3      hp boiler 9.81           kw
     in            0.0254      m             therms/ft3         3725.89       m-J/m3        hp electric 0.076        hp boiler
     miles         1.60934     km            Coeff. Of Exp. (volumetric)                    hp electric 1.0143       hp metric
     yds           0.9144      m             lbs/ft3.F          28.833        kgs/cm3.C     hp electric 746          watts (J/sec)
     Areas                                   Heat Capacity (specific heat)                  hp electric 0.746        kw
     ft/sec2       0.3048      m/sec2        btu/lb.F           4186.8        J/kg.C        hp metric 0.7355         kw
     acre          0.004047 sq.km            Heat Flux Density (Q) (W=J/sec)                Velocity
     sq.ft         0.0929      sq.m          btu/hr.ft2         3.1546        W/m2          ft/min       0.508       cm/sec
     sq.in         6.4516      sq.cm         Thermal Conductivity (k) (W=J/sec)             ft/min       0.01829     km/hr
     sq.miles 2.59             sq.km         btu.ft/hr.ft2.F    1.731         W/m.C         ft/sec       30.48       cm/sec
     sq.yd         0.83613     sq.m          btu.in/hr.ft2.F 0.14423          W/m.C         ft/sec       1.0973      km/hr
     Density                                 Resistance / Length ( R = 1/k)                 ft/sec       18.288      m/min
     lbs/ft3       0.01602     kgs/liter     F.ft2.hr/btu.ft    0.578         C.m/W         mph          44.704      cm/sec
     lbs/ft3       16.0185     kgs/m3        F.ft2.hr/btu.in 6.933            C.m/W         mph          1.609344 km/hr
     lbs/in3       27.68       gms/cm3       Heat Transfer Coeff. (U) (W=J/sec)             mph          26.822      m/min
     lbs/in3       27679.9     gms/liter     btu/hr.ft2.F       5.6783        W/m2.C        mph          0.4471      m/sec
     lbs/gal       0.11983     gms/cm3       Conductance ( C , h ) (W=J/sec)                knots        0.5144      m/sec
     lbs/gal       119.83      kgs/m3        btu/hr.ft2.F       5.6783        W/m2.C        mph          0.869       knots
     lbs/gal       0.11983     kgs/liter     Resistance ( 1/U , 1/h , L/k , 1/C )           Volume Flow              (gpm water)
     Energy                                  F.ft2.hr/btu       0.1761        C.m2/W        ft3/hr       7.865791 cm3/sec
     btu           251.996     cals          Pressure                                       ft3/hr       0.028317 m3/hr
     btu           0.251996 k-cals           atmos              10332.27 kgf/m2             ft3/hr       0.47195     liters/min
     btu           1.0551      kJ            atmos              1013.25       millibars     ft3/hr       471.948     cm3/sec
     btu           0.0002931 kwh             atmos              101325        N/m2 (Pa)     ft3/min      1.699       m3/hr
     btu           1055.056 watt-secs        ft.H2o             304.398       kgf/m2        ft3/min      0.47195     liters/sec
     btu           1054.728 Joules (J)       ft.H2o             2985.13       N/m2 (Pa)     ft3/min      7.48052     gpm
     btu           1054.728 newton-m         in.H2O             25.367        kgf/m2        ft3/min      62.3456     lbs H2O/m
     hp            2.648 E 6 J or N-M        in.H2O             2.487         millibars     gpm          0.22713     m3/hr
     hp            632.415     k-cals        in.H2O             1.865         mm.Hg         gpm          3.7854      liters/min
     therms        2.52 E 7    cals          in.H2O             248.76        N/m2 (Pa)     gpm          3785.4      cm3/sec
     therms        1.055 E 8 J or N-M        in.Hg              345.315       kgf/m2        gpm          0.1337      ft3/min
     Enthalpy                                in.Hg              25.4          mm.Hg         Volume                   (gals water)
     btu/lb        0.55555     cals/gm       in.Hg (60 F)       3376.8        N/m2 (Pa)     ft3          28317       cm3
     btu/lb        0.55555     k-cals/kg     in.Hg (32 F)       3386.39       N/m2 (Pa)     ft3          0.028317 m3
     btu/lb        2.326       J/gm          lbsf/ft2           0.0004725 atmos             in3          16.3871     cm3
     btu/lb        2.326       k-J/kg        lbsf/ft2           0.4788        millibars     in3          1.6387 E -5 m3
     Force (Weight)                          lbsf/ft2           4.88243       kgf/m2        in3          0.016387 liters
     oz            28.349      gms           lbsf/ft2           0.35913       mm.Hg         yds3         0.7645      m3
     oz            0.02835     kgs           lbsf/ft2           47.88         N/m2 (Pa)     gals         3785.41     cm3
     oz            0.278       newtons       lbsf/in2           0.068046 atmos              gals         0.003785 m3
     lbs           4.448       newtons       lbsf/in2           68.947        millibars     gals         3.78541     liters
     lbs           0.4536      kgs           lbsf/in2           6894.76       N/m2 (Pa)     oz           29.57353 cm3
     lbs           0.0004536 metric tons     atmos              33.9          ft H2O        oz           2.96E-05    m3
     Mass Flow                               atmos              29.921        in.Hg         oz           0.029573 liters
     lbs/hr        0.454       kgs/hr        ft.H2o             62.345        lbf/ft2       in3          0.554       oz
     lbs/hr.ft2 0.001356 kgs/sec.m2          ft.H2o             0.433         lbf/in2       ft3          7.481       gals
     lbs/sec.ft2 4.8824        kgs/sec.m2    lbsf/in2           2.31          ft.H2O        ft3          62.357      lbs H2O
     Mass                                    Power                                          gals         128         oz
     lbs H2o       0.000454 m3 (60 F)        btu/hr             0.2931        watts (J/sec) gals         4           quarts
     tons long 1.016           tons metric   btu/hr             0.000293 kw                 quarts       2           pints
     tons long 1016.047 kgs                  btu/min            17.584        watts (J/sec) Specific Volume
     tons short 907.185        kgs           btu/min            0.017584 kw                 ft3/lb       62.428      cm3/gm
     tons long 2240            lbs           hp boiler          33472         btu/hr        ft3/lb       0.06243     m3/kg
Varkie C. Thomas, Ph.D., P.E.                   Skidmore, Owings Merrill, LLP Arch-551 (Fall-2002) Arch-552 (Spring-2003)
Energy Efficient Building Design         College of Architecture      Illinois Institute of Technology (IIT) Chicago
     tons short 2000         lbs   hp electric     2545.46     btu/hr           ft3/lb       62.428     liters/kg




Varkie C. Thomas, Ph.D., P.E.        Skidmore, Owings Merrill, LLP Arch-551 (Fall-2002) Arch-552 (Spring-2003)

								
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