A watt-hour (Wh) is the energy delivered by one watt of power sustained for one hour, equal to 3,600 joules.
Watt hours to Decajoules
Convert Watt-hour (Wh) to Decajoule (daJ) instantly with an exact formula, conversion table, and FAQ.
Reserved for a responsive leaderboard above the conversion details.
Professional calculator style
World-scale conversion engine
30+ categories
6,500+ units
Instant results
Offline ready
Energy calculator
Energy Converter
Convert watt hours (Wh) to decajoules (daJ) instantly with formula, conversion table, and FAQ.
Context values
Some unit families need one extra value for a physically accurate result.
A decajoule (daJ) is a metric-prefixed unit of energy equal to 101 joules, using the SI deca prefix.
daJ = Wh × 360
Results update instantly for Watt hours to Decajoules conversions.
Reserved above the conversion cards and below the converter.
Formula
daJ = Wh × 360
Wh = daJ × 0.002777777778
Conversion table
| 1 Wh | 360 daJ |
| 5 Wh | 1800 daJ |
| 10 Wh | 3600 daJ |
| 20 Wh | 7200 daJ |
| 50 Wh | 18000 daJ |
| 100 Wh | 36000 daJ |
| 500 Wh | 180000 daJ |
| 1000 Wh | 360000 daJ |
Related conversions
Reserved between the cards and the FAQ so the page stays balanced.
How the formula works
Both watt-hour and decajoule measure the same physical quantity, so converting between them is a single multiplication. Multiply a value in watt hours by 360 to get decajoules. To reverse the conversion, multiply a decajoule value by 0.002777777778 to get back to watt hours.
Frequently asked questions
What is Watt-hour (Wh)?
A watt-hour (Wh) is the energy delivered by one watt of power sustained for one hour, equal to 3,600 joules.
What is Decajoule (daJ)?
A decajoule (daJ) is a metric-prefixed unit of energy equal to 101 joules, using the SI deca prefix.
How do I convert watt hours to decajoules?
Multiply the watt-hour value by 360 to get the equivalent in decajoules. For example, 5 Wh × 360 = 1800 daJ.
Is this conversion exact?
Yes. Both units are defined against the SI base unit for this dimension, so the factor 360 is an exact, non-rounded value.
Can I convert decajoules back to watt hours?
Yes. Divide the decajoule value by 360, or multiply it by 0.002777777778, to get watt hours.
Reserved between the FAQ and the article so the page stays balanced.
About converting watt hours to decajoules
A watt-hour (Wh) is the energy delivered by one watt of power sustained for one hour, equal to 3,600 joules. A decajoule (daJ) is a metric-prefixed unit of energy equal to 101 joules, using the SI deca prefix.
Use this calculator to move between watt hours and decajoules accurately for homework, engineering, billing, or everyday energy calculations. The Universal Converter uses exact unit factors, so results stay consistent across the site.