21 Kilojoules to BTU
Convert 21 kilojoules (kJ) to btu (BTU) with formulas, examples, and conversion tables.
kJ
BTU
21 kJ = 19.9041 BTU
Full precision:19.9041 BTU
Step-by-Step Solution
To convert 21 kilojoules to btu, we divide by 1.0551 because one british thermal unit equals exactly 1.0551 kilojoules.
1 british thermal unit = 1.0551 kilojoules
Since there are 1.0551 kilojoules in every british thermal unit, we divide our value by this factor:
21 ÷ 1.0551 = 19.9041 btu
So 21 kilojoules = 19.9041 btu.
Quick check: 19.9041 × 1.0551 = 21 kilojoules
Kilojoules to BTU Conversion Table
| Kilojoules | BTU |
|---|---|
| 1 kJ | 0.94781 BTU |
| 2 kJ | 1.8956 BTU |
| 3 kJ | 2.8434 BTU |
| 4 kJ | 3.7913 BTU |
| 5 kJ | 4.7391 BTU |
| 10 kJ | 9.4781 BTU |
| 20 kJ | 18.9563 BTU |
| 21 kJ | 19.9041 BTU |
| 50 kJ | 47.3907 BTU |
| 100 kJ | 94.7813 BTU |
21 Kilojoules in Other Units
| Unit | 21 kJ = |
|---|---|
| Kilojoules to Joules | 21000 J |
| Kilojoules to Megajoules | 0.021 MJ |
| Kilojoules to Gigajoules | 0.000021 GJ |
| Kilojoules to Watt-hours | 5.8333 Wh |
| Kilojoules to Kilowatt-hours | 0.0058333 kWh |
| Kilojoules to Megawatt-hours | 0.00000583 MWh |
| Kilojoules to Calories | 5019.12 cal |
| Kilojoules to Kilocalories | 5.0191 kcal |
| Kilojoules to BTU | 19.9041 BTU |
| Kilojoules to Therms | 0.00019904 therm |
| Kilojoules to Foot-pounds | 15488.78 ft·lb |
| Kilojoules to Electronvolts | 1.3107e+23 eV |
| Kilojoules to Ergs | 2.1e+11 erg |