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TABLES AND CHARTS
CONVERSION FACTORS
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Multiply units in left column by proper factor below
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| Units of Length |
in. |
ft. |
yd. |
mile |
mm. |
cm |
m. |
km. |
| 1 inch |
1 |
0.0833 |
0.0278 |
---- |
25.40 |
2.540 |
0.0254 |
---- |
| 1 foot |
12 |
1 |
0.333 |
---- |
304.8 |
30.48 |
0.3048 |
---- |
| 1 yard |
36 |
3 |
1 |
---- |
914.4 |
9144 |
0.9144 |
---- |
| 1 mile |
---- |
5280 |
1760 |
1 |
---- |
---- |
1609.3 |
1.609 |
| 1 millimeter |
0.0394 |
0.0033 |
---- |
---- |
1 |
0.100 |
0.001 |
---- |
| 1 centimeter |
0.3937 |
0.0328 |
0.0109 |
---- |
10 |
1 |
0.01 |
---- |
| 1 meter |
39.37 |
3.281 |
1.904 |
|
1000 |
100 |
1 |
0.001 |
| 1 kilometer |
|
3281 |
1094 |
0.6214 |
---- |
---- |
1000 |
1 |
|
(1 micron = 0.001 millimeter)
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Multiply units in left column by proper factor below
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| Units of Area |
sq. in |
sq. ft |
acre |
sq. mile |
sq. cm. |
sq. m. |
hectare |
| 1 sq. inch |
1 |
0.0069 |
---- |
---- |
6.452 |
---- |
---- |
| 1 sq. foot |
144 |
1 |
---- |
---- |
929.0 |
0.0929 |
---- |
| 1 acre |
---- |
43,560 |
1 |
0.001 |
---- |
4047 |
0.4047 |
| 1 sq.mile |
---- |
---- |
640 |
1 |
---- |
---- |
259.0 |
| 1 sq.centimeter |
0.1550 |
---- |
---- |
---- |
1 |
0.0001 |
---- |
| 1 sq. meter |
1550 |
10.76 |
---- |
---- |
10,000 |
1 |
---- |
| 1 hectare |
---- |
---- |
2.471 |
---- |
---- |
10,000 |
1 |
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Multiply units in left column by proper factor below
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| Units of Volume |
cu. in. |
cu. ft. |
cu. yd. |
cu. cm. |
cu. meter |
liter |
U.S. Gal. |
Imp. gal. |
| 1 cu. inch |
1 |
---- |
---- |
16387 |
---- |
00164 |
---- |
---- |
| 1 cu. foot |
1728 |
1 |
0.0370 |
28.317 |
0.028 |
28.32 |
7.481 |
6.229 |
| 1 cu. yard |
46,656 |
27 |
1 |
---- |
0.7646 |
764.5 |
202.0 |
168.2 |
| 1 cu.centimeter |
00610 |
---- |
---- |
1 |
---- |
00010 |
---- |
---- |
| 1 cu. meter |
61,023 |
35.31 |
1.308 |
1,000,000 |
1 |
999.97 |
264.2 |
220.0 |
| 1 liter |
61.025 |
0.0353 |
---- |
1000.028 |
0.0010 |
1 |
02642 |
0.2200 |
| 1 US gallon |
231 |
0.1337 |
---- |
3785.4 |
---- |
3.785 |
1 |
0.8327 |
| 1 Imperial gallon |
277.4 |
0.1605 |
---- |
4546.1 |
---- |
4.546 |
1.201 |
1 |
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Multiply units in left column by proper factor below
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| Unit of Weight |
grain |
oz. |
lb. |
ton |
gram |
kg. |
metric ton |
| 1 grain |
1 |
---- |
---- |
---- |
0.0648 |
---- |
---- |
| 1 ounce |
437.5 |
1 |
0.0625 |
---- |
28 35 |
0.0283 |
---- |
| 1 pound |
7000 |
16 |
1 |
0,0005 |
453.6 |
0.4536 |
---- |
| 1 ton |
---- |
32,000 |
2000 |
1 |
---- |
907.2 |
0.9072 |
| 1 gram |
15.43 |
0.0353 |
---- |
---- |
1 |
0.001 |
---- |
| 1 kilogram |
---- |
35.27 |
2.205 |
---- |
1000 |
1 |
0.001 |
| 1 metric ton |
---- |
35,274 |
2205 |
1.1023 |
---- |
1000 |
1 |
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Multiply units in left column by proper factor below
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| Units of Density |
lb/cu. in. |
lb/cu. ft. |
lb/gal. |
g/cu. cm. |
g/liter |
| 1 pound/cu. in. |
1 |
1728 |
231.0 |
27.68 |
27,680 |
| 1 pound/cu.ft. |
---- |
1 |
0.1337 |
0.0160 |
16.019 |
| 1 pound/gal. |
0.00433 |
7.481 |
1 |
0.1198 |
119.83 |
| 1 gram/cu. cm. |
0.0361 |
62.43 |
8.345 |
1 |
1000.0 |
| 1 gram/liter |
---- |
0.0624 |
0.00835 |
0.001 |
1 |
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Multiply units in left column by proper factor below
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| Unit of Pressure |
lb/sq. in. |
lb/sq. ft |
int. ata. |
kg/cm2 |
mm Hg at 32°F |
in. Hg at 32°F |
ft. water at 39.2°F |
| 1 pound/sq. in. |
1 |
144 |
---- |
0.0703 |
51.713 |
2.0359 |
2.307 |
| 1 pound/sq. ft. |
0.00694 |
1 |
---- |
---- |
0.3591 |
0.01414 |
0.01602 |
| 1 intern. atmosphere |
14.696 |
2116.2 |
1 |
1.0333 |
760 |
29.921 |
33.90 |
| 1 kilogram/sq. cm. |
14.223 |
2048.1 |
0.9678 |
1 |
735.56 |
28.958 |
32.81 |
1 mm-mercury
1 torr (torricelli) |
0.0193 |
2.785 |
---- |
---- |
1 |
0.0394 |
0.0446 |
| 1 inch mercury |
0.4912 |
70.73 |
0.0334 |
0.0345 |
25.400 |
1 |
1.133 |
| 1 foot water |
0.4335 |
62.42 |
---- |
0.0305 |
22.41 |
0.8826 |
1 |
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Multiply units in left column by proper factor below
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| Units of Energy |
ft-lb. |
Btu |
g. Cal. |
Joule |
kw-hr. |
ph-hr. |
| 1 foot-pound |
1 |
0.001285 |
0.3240 |
1.3556 |
---- |
---- |
| 1 Btu |
778.2 |
1 |
252.16 |
1054.9 |
---- |
---- |
| 1 gram calorie |
3.0860 |
0.003966 |
1 |
4.1833 |
---- |
---- |
| 1 int. Joule |
0.7377 |
0.000948 |
0.2390 |
1 |
---- |
---- |
| 1 int. kilowatt-hour |
2,655,656 |
3412.8 |
860,563 |
---- |
1 |
1.3412 |
| 1 horsepower-hour |
1,980,000 |
2544.5 |
641,617 |
---- |
0.7456 |
1 |
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Multiply units in left column by proper factor below
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| Units of Specific Energy |
absolute Joule/g |
int. Joule/g |
Cal/s |
int. Cal/g |
Btu/lb. |
| 1 absolute Joule/gram |
1 |
0.99984 |
0.23901 |
0.23885 |
0.42993 |
| 1 int. Joule/gram |
1.000165 |
1 |
0.23904 |
0.23892 |
0.43000 |
| 1 calorie/gram |
4.1840 |
4.1833 |
1 |
0.99935 |
1.7988 |
| 1 int. calorie/gram |
4.1867 |
4.1860 |
1.00065 |
1 |
1.8000 |
| 1 Btu/lb. |
2.3260 |
2.3256 |
0.55592 |
0.55556 |
1 |
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Multiply units in left column by proper factor below
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Units of Power
(rate of energy use) |
hp |
Watt |
kw |
Btu./min |
Btu./hr. |
ft-lb/sec |
ft-lb/min |
g.Cal/sec |
metric hq |
| 1 horsepower |
1 |
745.7 |
0.7475 |
42.41 |
2544.5 |
550 |
33.000 |
178.2 |
1.014 |
| 1 Watt |
---- |
1 |
0.001 |
0.0569 |
3.413 |
0.7376 |
44.25 |
0.2390 |
0.00136 |
| 1 kilowatt |
1.3410 |
1000 |
1 |
56.88 |
3412.8 |
737.6 |
44254 |
239.0 |
1.360 |
| 1 Btu per min. |
---- |
---- |
---- |
1 |
60 |
12.97 |
778.2 |
4.203 |
0.0239 |
| 1 metric hp |
0.9863 |
735.5 |
0.7355 |
41.83 |
2509.6 |
542.5 |
32.550 |
175.7 |
1 |
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Multiply units in left column by proper factor below
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| Units of Refrigeration |
Btu (IT)/min |
Btu (IT)/hr. |
kg Cal/hr. |
1 ton (U.S.) comm |
ton (Brit.) comm |
frigorie/hr. |
| 1 ton (U.S.) comm |
200 |
12,000 |
3025.9 |
1 |
08965 |
3025.9 |
| 1 ton (Brit) comm |
223.08 |
13,385 |
3375.2 |
1.1154 |
1 |
3025.9 |
| 1 frigorie/hr. |
0.06609 |
3.9657 |
1 |
0.000330 |
0.0002963 |
1 |
| NOTE: Btu is International Steam Table Btu (IT). |
1 frigorie = 1kg casl (Not IT). |
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