# Conversion factors for units of energy, table

TABLE - CONVERSION FACTORS FOR UNITS OF ENERGY *

 Units g mass (energy equiv.) joule cal I.T. cal Btu kw-hr 1 g mass (energy equiv.) = 1 8.98656 X 1013 2.14784 X 1013 2.14664 X Ю43 8.51775 X 1010 2.49627 X 107 1 joule = 1.112772 X 10-14 1 0.239006 0.238849 0.947831 X 10-3 2.77778 X 10-7 1 cal = 4.65584 X 10-14 4.1840 † 1 0.999346 3.96573 X 10-3 1.16222 X 10-6 1 I.T. cal ‡ = 4.65888 X 10-14 4.18674 1.000654 1 3.96832 X 10-3 1.162983 X 10-6 1 Btu = 1.174019 X 10-11 1.055040 X 103 † 2.52161 X 102 2:51996 X 102 1 2.93066 X 10-4 1 kw-hr = 4.00598 X 10-8 3.6 X 10-3 8.60421 X 105 8.59858 X 105 3.41220 X 103 1 1 hp-hr = 2.98727 X 10-8 2.684525 X 106 6.41617 X 105 6.41197 X 105 2.54448 X 103 0.745701 1 ft-lb (wt.) = 1.50872 X 10-11 1.355821 0.324049 0.323837 1.285089 X 10-3 3.76614 X 10-7 1 ft3-ib (wt.)/in.2 = 2.17256 X 10-12 1.952382 X 102 46.6630 46.6325 0.1850529 5.42328 X 10-5 1 liter-atm = 1.127548 X 10-12 1.013278 X 102 24.2179 24.2021 0.0960416 2.81466 X 10-5 1 quantum (λ = .6μ) = 3.6829 X 10-33 3.3096 X 10-19 7.91021 X 10-20 7.90504 X 10-33 3.13676 X 10-22 9.19342 X 10-26 1 Mev = 1.78270 X 10-27 1.60203 X 10-13 3.82894 X 10-14 3.82644 X 10-14 1.51845 X 10-16 4.44998 X 10-20 1 amu § = 1.66035 X 10-24 1.49208 X 10-10 3.56616 X 10-11 3.56379 X 10-11 1.41422 X 10-13 4.14453 X 10-17

 Units hp-hr ft-lb (wt.) ft3-ib (wt.)/in.2 liter-atm quantum (λ = .6μ) Mev amu § 1 g mass (energy equiv.) = 3.34754 X 107 6.62814 X 1013 4.60287 X 1011 8.86880 X 1011 2.71503 X 1022 5.60961 X 1020 6.02308 X 1023 1 joule = 3.72505 X 10-7 0.737561 5.12195 X 10-3 9.86896 X 10-3 3.02125 X 1018 6.24222 X 1012 6.70232 X 108 1 cal = 1.558562 X 10-6 3.08595 2.14302 X 10-2 4.12917 X 10-2 1.26409 X 1010 2.61175 X 1018 2.80425 X 1010 1 I.T. cal ‡ = 1.559582 X 10-6 3.08797 2.14443 X 10-2 4.13187 X 10-2 1.26491 X 1010 2.61346 X 1013 2.80608 X 1010 1 Btu = 3.93008 X 10-4 7.78156 X 102 5.40386 10.41215 3.18754 X 1021 6.58580 X 1015 7.07121 X 1015 1 kw-hr = 1.341020 2.655218 X 106 1.843902 X 104 3.55282 X 104 1.08765 X 1025 2.24720 X 1010 2.41283 X 1010 1 hp-hr = 1 1.98000 X 106 1.3750 X 104 2.64935 X 104 8.11062 X 1024 1.67574 X 1019 1.79926 X 1010 1 ft-lb (wt.) = 5.05051 X 10-7 1 6.94444 X 10-3 1.338054 X 10-2 4.09627 X 1018 8.46334 X 1012 9.08711 X 106 1 ft3-ib (wt.)/in.2 = 7.27273 X 10-5 1.44 X 102 1 1.926797 5.89862 X 1020 1.21872 X 1015 1.30855 X 1012 1 liter-atm = 3.77452 X 10-5 74.7354 0.518996 1 3.06136 x 1020 6.32519 X 1014 6.79131 X 1011 1 quantum (λ = .6μ) = 1.23286 X 10-25 2.44116 X 10-10 1.69531 X 10-21 3.266520 X 10-21 1 2.06593 X 10-6 2.21839 X 10-9 1 Mev = 5.96751 X 10-30 1.18157 X 10-13 8.20535 X 10-10 1.58100 X 10-15 4.84001 X 106 1 1.07371 X 10-3 1 amu § = 5.55790 X 10-17 1.10046 X 10-10 7.64208 X 10-13 1.147247 X 10-12 4.50776 X 108 9.31354 X 102 1

* Adapted from National Bureau of Standards Tallies,

† Definition of calorie and Rtn.

As defined for international Steam Tables,

§ Unit atomic weight energy equivalent.

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