# Hartrees to Kilocalories Conversion

Hartree to kilocalorie conversion allow you make a conversion between hartree and kilocalorie easily. You can find the tool in the following.

### Energy Conversion

to

input
= 1.042 × 10-21
= 1.042E-21
= 1.042e-21

= 2.08401 × 10-21
= 2.08401E-21
= 2.08401e-21

= 3.12601 × 10-21
= 3.12601E-21
= 3.12601e-21

= 4.16802 × 10-21
= 4.16802E-21
= 4.16802e-21

= 5.21002 × 10-21
= 5.21002E-21
= 5.21002e-21

### Quick Look: hartrees to kilocalories

 hartree 1 Eh 2 Eh 3 Eh 4 Eh 5 Eh 6 Eh 7 Eh 8 Eh 9 Eh 10 Eh 11 Eh 12 Eh 13 Eh 14 Eh 15 Eh 16 Eh 17 Eh 18 Eh 19 Eh 20 Eh 21 Eh 22 Eh 23 Eh 24 Eh 25 Eh 26 Eh 27 Eh 28 Eh 29 Eh 30 Eh 31 Eh 32 Eh 33 Eh 34 Eh 35 Eh 36 Eh 37 Eh 38 Eh 39 Eh 40 Eh 41 Eh 42 Eh 43 Eh 44 Eh 45 Eh 46 Eh 47 Eh 48 Eh 49 Eh 50 Eh 51 Eh 52 Eh 53 Eh 54 Eh 55 Eh 56 Eh 57 Eh 58 Eh 59 Eh 60 Eh 61 Eh 62 Eh 63 Eh 64 Eh 65 Eh 66 Eh 67 Eh 68 Eh 69 Eh 70 Eh 71 Eh 72 Eh 73 Eh 74 Eh 75 Eh 76 Eh 77 Eh 78 Eh 79 Eh 80 Eh 81 Eh 82 Eh 83 Eh 84 Eh 85 Eh 86 Eh 87 Eh 88 Eh 89 Eh 90 Eh 91 Eh 92 Eh 93 Eh 94 Eh 95 Eh 96 Eh 97 Eh 98 Eh 99 Eh 100 Eh kilocalorie 1.0420038240918 × 10-21 kcal 2.0840076481836 × 10-21 kcal 3.1260114722753 × 10-21 kcal 4.1680152963671 × 10-21 kcal 5.2100191204589 × 10-21 kcal 6.2520229445507 × 10-21 kcal 7.2940267686424 × 10-21 kcal 8.3360305927342 × 10-21 kcal 9.378034416826 × 10-21 kcal 1.0420038240918 × 10-20 kcal 1.146204206501 × 10-20 kcal 1.2504045889101 × 10-20 kcal 1.3546049713193 × 10-20 kcal 1.4588053537285 × 10-20 kcal 1.5630057361377 × 10-20 kcal 1.6672061185468 × 10-20 kcal 1.771406500956 × 10-20 kcal 1.8756068833652 × 10-20 kcal 1.9798072657744 × 10-20 kcal 2.0840076481836 × 10-20 kcal 2.1882080305927 × 10-20 kcal 2.2924084130019 × 10-20 kcal 2.3966087954111 × 10-20 kcal 2.5008091778203 × 10-20 kcal 2.6050095602294 × 10-20 kcal 2.7092099426386 × 10-20 kcal 2.8134103250478 × 10-20 kcal 2.917610707457 × 10-20 kcal 3.0218110898662 × 10-20 kcal 3.1260114722753 × 10-20 kcal 3.2302118546845 × 10-20 kcal 3.3344122370937 × 10-20 kcal 3.4386126195029 × 10-20 kcal 3.542813001912 × 10-20 kcal 3.6470133843212 × 10-20 kcal 3.7512137667304 × 10-20 kcal 3.8554141491396 × 10-20 kcal 3.9596145315488 × 10-20 kcal 4.0638149139579 × 10-20 kcal 4.1680152963671 × 10-20 kcal 4.2722156787763 × 10-20 kcal 4.3764160611855 × 10-20 kcal 4.4806164435946 × 10-20 kcal 4.5848168260038 × 10-20 kcal 4.689017208413 × 10-20 kcal 4.7932175908222 × 10-20 kcal 4.8974179732314 × 10-20 kcal 5.0016183556405 × 10-20 kcal 5.1058187380497 × 10-20 kcal 5.2100191204589 × 10-20 kcal 5.3142195028681 × 10-20 kcal 5.4184198852772 × 10-20 kcal 5.5226202676864 × 10-20 kcal 5.6268206500956 × 10-20 kcal 5.7310210325048 × 10-20 kcal 5.835221414914 × 10-20 kcal 5.9394217973231 × 10-20 kcal 6.0436221797323 × 10-20 kcal 6.1478225621415 × 10-20 kcal 6.2520229445507 × 10-20 kcal 6.3562233269598 × 10-20 kcal 6.460423709369 × 10-20 kcal 6.5646240917782 × 10-20 kcal 6.6688244741874 × 10-20 kcal 6.7730248565966 × 10-20 kcal 6.8772252390057 × 10-20 kcal 6.9814256214149 × 10-20 kcal 7.0856260038241 × 10-20 kcal 7.1898263862333 × 10-20 kcal 7.2940267686424 × 10-20 kcal 7.3982271510516 × 10-20 kcal 7.5024275334608 × 10-20 kcal 7.60662791587 × 10-20 kcal 7.7108282982792 × 10-20 kcal 7.8150286806883 × 10-20 kcal 7.9192290630975 × 10-20 kcal 8.0234294455067 × 10-20 kcal 8.1276298279159 × 10-20 kcal 8.231830210325 × 10-20 kcal 8.3360305927342 × 10-20 kcal 8.4402309751434 × 10-20 kcal 8.5444313575526 × 10-20 kcal 8.6486317399618 × 10-20 kcal 8.7528321223709 × 10-20 kcal 8.8570325047801 × 10-20 kcal 8.9612328871893 × 10-20 kcal 9.0654332695985 × 10-20 kcal 9.1696336520076 × 10-20 kcal 9.2738340344168 × 10-20 kcal 9.378034416826 × 10-20 kcal 9.4822347992352 × 10-20 kcal 9.5864351816444 × 10-20 kcal 9.6906355640535 × 10-20 kcal 9.7948359464627 × 10-20 kcal 9.8990363288719 × 10-20 kcal 1.0003236711281 × 10-19 kcal 1.010743709369 × 10-19 kcal 1.0211637476099 × 10-19 kcal 1.0315837858509 × 10-19 kcal 1.0420038240918 × 10-19 kcal

The hartree (symbol: Eh or Ha), also known as the Hartree energy, is the atomic unit of energy, named after the British physicist Douglas Hartree.

Name of unitSymbolDefinitionRelation to SI unitsUnit System
hartreeEh

≡ me·α2·c2 (= 2 Ry)

≈ 4.359744×10−18 J

Metric system Non-SI

#### conversion table

hartreeskilocalorieshartreeskilocalories
1≈ 1.0420038240918E-216≈ 6.2520229445507E-21
2≈ 2.0840076481836E-217≈ 7.2940267686424E-21
3≈ 3.1260114722753E-218≈ 8.3360305927342E-21
4≈ 4.1680152963671E-219≈ 9.378034416826E-21
5≈ 5.2100191204589E-2110≈ 1.0420038240918E-20

The kilocalorie is the unit of energy.

Name of unitSymbolDefinitionRelation to SI unitsUnit System
kilocaloriekcal

≡ 1000 calIT

= 4184 J

Metric system SI

### conversion table

kilocalorieshartreeskilocalorieshartrees
1≈ 9.5968937625695E+206≈ 5.7581362575417E+21
2≈ 1.9193787525139E+217≈ 6.7178256337987E+21
3≈ 2.8790681287709E+218≈ 7.6775150100556E+21
4≈ 3.8387575050278E+219≈ 8.6372043863126E+21
5≈ 4.7984468812848E+2110≈ 9.5968937625695E+21

### Conversion table

hartreeskilocalories
1≈ 1.0420038240918 × 10-21
9.5968937625695 × 1020≈ 1

### Legend

SymbolDefinition
exactly equal
approximately equal to
=equal to
digitsindicates that digits repeat infinitely (e.g. 8.294 369 corresponds to 8.294 369 369 369 369 …)