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Technical Information
Equivalents and Conversions

       
  Decimal and Millimeter Equivalents
   
 
DECIMALS MM
1 0.015625   0.397
64
1   0.031250   0.794
32
3 0.046875   1.191
64
1     0.062500   1.588
16
5 0.078125   1.984
64
3   0.093750   2.381
32
7 0.109375   2.778
64
1     0.125000   3.175
8
9 0.140625   3.572
64
5   0.156250   3.969
32
11 0.171875   4.366
64
3     0.187500   4.763
16
13 0.203125   5.159
64
7   0.218750   5.556
32
15 0.234375   5.953
64
1     0.250000   6.350
4
17 0.265625   6.747
64
9   0.281250   7.144
32
19 0.296875   7.541
64
5     0.312500   7.938
16
21 0.328125   8.334
64
11   0.343750   8.731
32
23 0.359375   9.128
64
3     0.375000   9.525
8
25 0.390625   9.922
64
13   0.406250   10.319
32
27 0.421875   10.716
64
7     0.437500   11.113
16
29 0.453125   11.509
64
15   0.468750   11.906
32
31 0.484375   12.303
64
1     0.500000   12.700
2
1 mm = .03937”
DECIMALS MM
33 0.515625   13.097
64
17   0.531250   13.494
32
35 0.546875   13.891
64
9     0.562500   14.288
16
37 0.578125   14.684
64
19   0.593750   15.081
32
39 0.609375   15.478
64
5     0.625000   15.875
8
41 0.640625   16.272
64
21   0.656250   16.669
32
43 0.671875   17.066
64
11     0.687500   17.463
16
45 0.703125   17.859
64
23   0.718750   18.256
32
47 0.734375   18.653
64
3     0.750000   19.050
4
49 0.765625   19.447
64
25   0.781250   19.844
32
51 0.796875   20.241
64
13     0.812500   20.638
16
53 0.828125   21.034
64
27   0.843750   21.431
32
55 0.859375   21.828
64
7     0.875000   22.225
8
57 0.890625   22.622
64
29   0.906250   23.019
32
59 0.921875   23.416
64
15     0.937500   23.813
16
61 0.953125   24.209
64
31   0.968750   24.606
32
63 0.984375   25.003
64
1     1.000000   25.400
001" = .0254 mm
MM IN MM IN
0.1 -- 0.0039 46 -- 1.8110
0.2 -- 0.0079 47 -- 1.8504
0.3 -- 0.0118 48 -- 1.8898
0.4 -- 0.0157 49 -- 1.9291
0.5 -- 0.0197 50 -- 1.9685
0.6 -- 0.0236 51 -- 2.0079
0.7 -- 0.0276 52 -- 2.0472
0.8 -- 0.0315 53 -- 2.0866
0.9 -- 0.0354 54 -- 2.1260
1 -- 0.0394 55 -- 2.1654
2 -- 0.0787 56 -- 2.2047
3 -- 0.1181 57 -- 2.2441
4 -- 0.1575 58 -- 2.2835
5 -- 0.1969 59 -- 2.3228
6 -- 0.2362 60 -- 2.3622
7 -- 0.2756 61 -- 2.4016
8 -- 0.3150 62 -- 2.4409
9 -- 0.3543 63 -- 2.4803
10 -- 0.3937 64 -- 2.5197
11 -- 0.4331 65 -- 2.5591
12 -- 0.4724 66 -- 2.5984
13 -- 0.5118 67 -- 2.6378
14 -- 0.5512 68 -- 2.6772
15 -- 0.5906 69 -- 2.7165
16 -- 0.6299 70 -- 2.7559
17 -- 0.6693 71 -- 2.7953
18 -- 0.7087 72 -- 2.8346
19 -- 0.7480 73 -- 2.8740
20 -- 0.7874 74 -- 2.9134
21 -- 0.8268 75 -- 2.9528
22 -- 0.8661 76 -- 2.9921
23 -- 0.9055 77 -- 3.0315
24 -- 0.9449 78 -- 3.0709
25 -- 0.9843 79 -- 3.1102
26 -- 1.0236 80 -- 3.1496
27 -- 1.0630 81 -- 3.1890
28 -- 1.1024 82 -- 3.2283
29 -- 1.1417 83 -- 3.2677
30 -- 1.1811 84 -- 3.3071
31 -- 1.2205 85 -- 3.3465
32 -- 1.2598 86 -- 3.3858
33 -- 1.2992 87 -- 3.4252
34 -- 1.3386 88 -- 3.4646
35 -- 1.3780 89 -- 3.5039
36 -- 1.4173 90 -- 3.5433
37 -- 1.4567 91 -- 3.5827
38 -- 1.4961 92 -- 3.6220
39 -- 1.5354 93 -- 3.6614
40 -- 1.5748 94 -- 3.7008
41 -- 1.6142 95 -- 3.7402
42 -- 1.6535 96 -- 3.7795
43 -- 1.6929 97 -- 3.8189
44 -- 1.7323 98 -- 3.8583
45 -- 1.7717 99 -- 3.8976
      100 -- 3.9370
   
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Metric System/Length
Unit     Metric Equivalent   US Equivalent
millimeter (mm) = 0.001 meter = 0.03937
inch
centimeter (cm) = 0.01   meter = 0.3937   inch
decimeter (dm) = 0.1   meter = 3.937   inches
METER (m) = 1   meter = 39.37   inches
dekameter (dkm) = 10.0   meters = 10.93   yards
hectometer (hm) = 100.0   meters = 328.08   feet
kilometer (km) = 1000.0   meters = 0.6214   mile
           
 
Metric System/Weight or Mass
Unit     Metric Equivalent   US Equivalent
milligram (mg) = 0.001 gram = 0.0154
grain
centigram (cg) = 0.01   gram = 0.1543   grain
decigram (dg) = 0.1   gram = 1.543   grains
GRAM (g) = 1   gram = 15.43   grains
dekagram (dkg) = 10.0   grams = 0.3527   ounce avoirdupois
hectogram (hg) = 100.0   grams = 3.527   ounces avoirdupois
kilogram (kg) = 1000.0   grams = 2.2   pounds avoirdupois
           
 
Metric System/Capacity
Unit     Metric Equivalent   US Equivalent
milliliter (ml) = 0.001 liter = 0.0034
fluid ounce
centiliter (cl) = 0.01   liter = 0.338   fluid ounce
deciliter (dl) = 0.1   liter = 3.38   fluid ounces
LITER (l) = 1   liter = 1.05   liquid quarts
dekaliter (dkl) = 10.0   liters = 0.284   bushel
hectoliter (hl) = 100.0   liters = 2.837   bushels
kiloliter (kl) = 1000.0   liters = 264.18   gallon
           
 
Metric System/Area
Unit     Metric Equivalent   US Equivalent
square millimeter (mm2) = 0.000001 centare = 0.00155
square inch
square centimeter (cm2) = 0.0001   centare = 0.155   square inch
square decimeter (dm2) = 0.01   centare = 15.5   square inches
CENTARE, also (ca) = 1.0   centare = 10.76   square feet
square meter (m2)
are, also (a) = 100.0   centares = 0.0247   acre
square dekameter (dkm2)
hectare, also (ha) = 10,000.0   centares = 2.47   acres
square hectometer (hm2)
square kilometer (km2) = 1,000,000.0   centares = 0.386   square mile
           
 
Metric System/Volume
Unit     Metric Equivalent   US Equivalent
cubic millimeter (mm3) = 0.001 cubic centimeter = 0.016
minim
cubic centimeter (cc, cm3) = 0.001   cubic decimeter = 0.061   cubic inch
cubic decimeter (dm3) = 0.001   cubic meter = 61.023   cubic inches
STERE, also (s) = 1.0   cubic meter = 1.308   cubic yards
cubic meter (m3)
cubic dekameter (dkm3) = 1000.0   cubic meters = 1307.943   cubic yards
cubic hectometer (hm3) = 1,000,000.0   cubic meters = 1,307,942.8   cubic yards
cubic kilometer (km3) = 1,000,000,000.0   cubic meters = 0.25   cubic mile
           
 
Pressure
Unit Atm. kg/cm2 lb/in2 bar mm Hg.
(0°C)
in. Hg.
(32°F)
ft. H2O
(60°F)
1 Atmosphere 1* 1.033228 14.6959 1.013250 760* 29.921 33.934
1 kg./cm2 0.967841 1* 14.2233 0.980665* 735.559 28.959 32.843
10 lb./in.2 0.68046 0.70307 10* 0.689476 517.149 20.360 23.091
1 bar 0.986923 1.019716 14.5038 1* 750.062 29.530 33.490
1 meter Hg. (0°C)
1.31579 1.35951 19.3368 1.333224 1000* 39.370 44.65
10 in. Hg. (32°F)
0.33421 0.34532 4.9115 0.33864 254* 10* 11.341
100 ft. H20 (60°F) 2.9469 3.0448 43.308 2.9859 2239.6 88.175 100*
  1 inch of Hg (mercury) = 13.6 inch H20
1 PSI = 2.31 inches of H20
       
           
 
Conversion Table
1 Btu = 251.996 international calories
Multiply
Number of...
By... To Obtain...
British thermal
units
778.3 Foot-pounds
3.929 x 10-4 Horsepower-hours
2.930 x 10-4 Kilowatt-hours
.2930 Watts-hours
Foot-pounds 1.285 x 10-3 British thermal units
5.05 x 10-7 Horsepower-hours
3.766 x 10-7 Kilowatt-hours
3.766 x 10-4 Watts-hours
Horsepower-hours 2545 British thermal units
1.98 x 104 Foot-pounds
.7457 Kilowatt-hours
745.7 Watts-hours
Kilowatt-hours 3413 British thermal units
2.655 x 106 Foot-pounds
1.341 Horsepower-hours
1000 Watts-hours
Watt-hours 3.413 British thermal units
2655 Foot-pounds
1.341 x 10-3 Horsepower-hours
.001 Kilowatt-hours
Conversion Factors
Length Weight
1 in. = 2.54 cm 1 kg. = 2.205 lb.
1 ft. = .3048 m  
1 yd. = .9144 m Volume
1 m = 39.37 in. 1 cu. in. = 16.39 cm3
  1 cu. ft. = .02832 m3
Area 1 cu. ft. = 62.43 lb. water
1 sq. in. = 6.452 cm2 1 cu. ft. = 7.5 gal water
1 sq. ft. = .0929 m2 1 cu. ft. = 28.32 liters
  1 U.S. gal = .1337 cu. ft.
Horsepower 1 U.S. gal = 231 cu. in.
1 hp. = .746 kW 1 U.S. gal = 8.345 lb. water
1 boiler hp. = 9.8 kW 1 U.S.gal = 3.785 liters
   
 
Natural Gas Equivalent
One therm. = 1,000,000 BTU
One cu. ft. of gas = 1040 BTU (range 1020 - 1055)
One Therm (Rounding off) = 100 cu. ft. gas
One MCF = 1,040,000 BTU
Multiply
Number of...
By... To Obtain...
bar .987 Atmosphere
bar 100,000 Pascal
barrel (42 US gal.) .159 Cu. meters
calorie 4.184 Joule
Joule .00095 BTU
Kilojoule 3,600 Kilowatt-hours
Kilograms/sq. cm. 14.2 Pounds/sq. in.
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