Watt-hours to Nanojoules Converter
Enter the energy in watt-hours below to convert it to nanojoules.
Convert Watt-hours to Nanojoules
Enter a value in watt-hours (Wh) to convert to nanojoules (nJ).
Watt-hour to Nanojoule Conversion Table
Table showing various watt-hour measurements converted to nanojoules. Click any preset value or arrow to load it into the converter.
| Watt-hours (Wh) | Nanojoules (nJ) |
|---|---|
| 0.0000001 Wh | 360,000 nJ |
| 0.0000002 Wh | 720,000 nJ |
| 0.0000003 Wh | 1,080,000 nJ |
| 0.0000004 Wh | 1,440,000 nJ |
| 0.0000005 Wh | 1,800,000 nJ |
| 0.0000006 Wh | 2,160,000 nJ |
| 0.0000007 Wh | 2,520,000 nJ |
| 0.0000008 Wh | 2,880,000 nJ |
| 0.0000009 Wh | 3,240,000 nJ |
| 0.00000001 Wh | 36,000 nJ |
How to Convert Watt-hours to Nanojoules
To convert watt-hours to nanojoules, multiply the energy by the following conversion ratio: 3.6e+12 nanojoules/watt-hour.
Since one watt-hour is equal to 3.6e+12 nanojoules, you can use this simple formula to convert:
The energy in nanojoules is equal to the energy in watt-hours multiplied by 3.6e+12.
For example, here's how to convert 5 watt-hours to nanojoules using the formula above.
How Many Nanojoules Are in a Watt-hour?
There are 3.6e+12 nanojoules in a watt-hour, which is why we use this value in the formula above.
Our watt-hour to nanojoule calculator automatically converts your energy measurements with full decimal and scientific precision across US customary, imperial, and SI metric standards.
Watt-hours and nanojoules are both units used to measure energy. Keep reading to learn more about each unit.
What Is a Watt-hour?
A watt-hour is a unit of energy equal to 3,600 joules (J), the base unit for energy. Equal to 3,600 Joules. [1]
The watt-hour is classified as a metric and SI-compatible unit of energy. Watt-hours can be abbreviated as Wh; for example, 1 watt-hour can be written as 1 Wh.
When working with watt-hours (Wh) in formulas or technical specifications, always verify whether your target system uses SI metric, US customary, or British imperial standards.
In practice, watt-hours (Wh) are widely used across large-scale industrial, bulk, and macro-level energy specifications within SI metric workflows, engineering documentation, and technical data sheets.
What Is a Nanojoule?
A nanojoule is a unit of energy equal to 1/1,000,000,000 of a joule (1e-9 J). One-billionth of a Joule. [2]
The nanojoule is classified as a metric and SI-compatible unit of energy. Nanojoules can be abbreviated as nJ; for example, 1 nanojoule can be written as 1 nJ.
In the metric system, "nano" is the standard SI prefix for billionths, or 10⁻⁹. This makes the nanojoule (nJ) a convenient decimal multiple of the joule (J).
In practice, nanojoules (nJ) are widely used across fine-tolerance laboratory, analytical, and micro-scale energy measurements within SI metric workflows, engineering documentation, and technical data sheets.
When converting energy between watt-hours (Wh) and nanojoules (nJ), keep full floating-point precision (1 Wh = 3.6e+12 nJ; 1 nJ = 2.777778e-13 Wh) during intermediate calculations and round only the final nanojoule figure to match your instrument tolerance.
More Watt-hour & Nanojoule Conversions
Need to calculate in the opposite direction? Use our nanojoules to watt-hours calculator to switch your starting unit immediately. You can also explore related tools such as converting nanojoules to watt-hours, converting watt-hours to ampere-hours, or converting joules to calories.
Convert from Watt-hours
Frequently Asked Questions
References
- [1]NIST CODATA StandardNIST CODATA (CODATA Energy & Thermodynamic Constants)·Energy Metrology Standard — Watt-hours (Wh) to Nanojoules (nJ)
- [2]NIST SP 811 SpecificationNIST SP 811 (NIST SP 811 App. B.9 (Energy, Work & Heat))·Unit Specifications: Watt-hour (Wh) & Nanojoule (nJ)
- [3]BIPM ReferenceBIPM (Derived SI Unit: Joule (J))·Conversion Factors & Mathematical Basis (Wh to nJ)