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 to Petajoules
Convert British thermal unit (BTU) to Petajoule (PJ) instantly with an exact formula, conversion table, and FAQ.
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Convert btu (BTU) to petajoules (PJ) instantly with formula, conversion table, and FAQ.
Context values
Some unit families need one extra value for a physically accurate result.
A petajoule (PJ) is a metric-prefixed unit of energy equal to 1015 joules, using the SI peta prefix.
PJ = BTU × 1.055055853e-12
Results update instantly for Btu to Petajoules conversions.
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Formula
PJ = BTU × 1.055055853e-12
BTU = PJ × 947817120313
Conversion table
| 1 BTU | 1.055056e-12 PJ |
| 5 BTU | 5.275279e-12 PJ |
| 10 BTU | 1.055056e-11 PJ |
| 20 BTU | 2.110112e-11 PJ |
| 50 BTU | 5.275279e-11 PJ |
| 100 BTU | 1.055056e-10 PJ |
| 500 BTU | 5.275279e-10 PJ |
| 1000 BTU | 1.055056e-09 PJ |
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How the formula works
Both british thermal unit and petajoule measure the same physical quantity, so converting between them is a single multiplication. Multiply a value in btu by 1.055055853e-12 to get petajoules. To reverse the conversion, multiply a petajoule value by 947817120313 to get back to btu.
Frequently asked questions
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.
What is Petajoule (PJ)?
A petajoule (PJ) is a metric-prefixed unit of energy equal to 1015 joules, using the SI peta prefix.
How do I convert btu to petajoules?
Multiply the british thermal unit value by 1.055055853e-12 to get the equivalent in petajoules. For example, 5 BTU × 1.055055853e-12 = 5.275279e-12 PJ.
Is this conversion exact?
Yes. Both units are defined against the SI base unit for this dimension, so the factor 1.055055853e-12 is an exact, non-rounded value.
Can I convert petajoules back to btu?
Yes. Divide the petajoule value by 1.055055853e-12, or multiply it by 947817120313, to get btu.
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About converting btu to petajoules
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. A petajoule (PJ) is a metric-prefixed unit of energy equal to 1015 joules, using the SI peta prefix.
Use this calculator to move between btu and petajoules accurately for homework, engineering, billing, or everyday energy calculations. The Universal Converter uses exact unit factors, so results stay consistent across the site.