A petajoule (PJ) is a metric-prefixed unit of energy equal to 1015 joules, using the SI peta prefix.
Petajoules to Btu
Convert Petajoule (PJ) to British thermal unit (BTU) instantly with an exact formula, conversion table, and FAQ.
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Convert petajoules (PJ) to btu (BTU) instantly with formula, conversion table, and FAQ.
Context values
Some unit families need one extra value for a physically accurate result.
The British thermal unit (BTU) is the energy needed to raise one pound of water by one degree Fahrenheit, widely used for heating and air-conditioning ratings.
BTU = PJ × 947817120313
Results update instantly for Petajoules to Btu conversions.
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Formula
BTU = PJ × 947817120313
PJ = BTU × 1.055055853e-12
Conversion table
| 1 PJ | 9.478171e+11 BTU |
| 5 PJ | 4.739086e+12 BTU |
| 10 PJ | 9.478171e+12 BTU |
| 20 PJ | 1.895634e+13 BTU |
| 50 PJ | 4.739086e+13 BTU |
| 100 PJ | 9.478171e+13 BTU |
| 500 PJ | 4.739086e+14 BTU |
| 1000 PJ | 9.478171e+14 BTU |
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How the formula works
Both petajoule and british thermal unit measure the same physical quantity, so converting between them is a single multiplication. Multiply a value in petajoules by 947817120313 to get btu. To reverse the conversion, multiply a british thermal unit value by 1.055055853e-12 to get back to petajoules.
Frequently asked questions
What is Petajoule (PJ)?
A petajoule (PJ) is a metric-prefixed unit of energy equal to 1015 joules, using the SI peta prefix.
What is British thermal unit (BTU)?
The British thermal unit (BTU) is the energy needed to raise one pound of water by one degree Fahrenheit, widely used for heating and air-conditioning ratings.
How do I convert petajoules to btu?
Multiply the petajoule value by 947817120313 to get the equivalent in btu. For example, 5 PJ × 947817120313 = 4.739086e+12 BTU.
Is this conversion exact?
Yes. Both units are defined against the SI base unit for this dimension, so the factor 947817120313 is an exact, non-rounded value.
Can I convert btu back to petajoules?
Yes. Divide the british thermal unit value by 947817120313, or multiply it by 1.055055853e-12, to get petajoules.
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About converting petajoules to btu
A petajoule (PJ) is a metric-prefixed unit of energy equal to 1015 joules, using the SI peta prefix. The British thermal unit (BTU) is the energy needed to raise one pound of water by one degree Fahrenheit, widely used for heating and air-conditioning ratings.
Use this calculator to move between petajoules and btu accurately for homework, engineering, billing, or everyday energy calculations. The Universal Converter uses exact unit factors, so results stay consistent across the site.