Nanojoules to Joules Converter
Enter the energy in nanojoules below to convert it to joules.
Convert Nanojoules to Joules
Enter a value in nanojoules (nJ) to convert to joules (J).
Nanojoule to Joule Conversion Table
Table showing various nanojoule measurements converted to joules. Click any preset value or arrow to load it into the converter.
| Nanojoules (nJ) | Joules (J) |
|---|---|
| 1 nJ | 1e-9 J |
| 10 nJ | 0.00000001 J |
| 100 nJ | 0.0000001 J |
| 1,000 nJ | 0.000001 J |
| 10,000 nJ | 0.00001 J |
| 100,000 nJ | 0.0001 J |
| 1,000,000 nJ | 0.001 J |
| 5,000,000 nJ | 0.005 J |
| 10,000,000 nJ | 0.01 J |
| 25,400,000 nJ | 0.0254 J |
How to Convert Nanojoules to Joules
To convert nanojoules to joules, multiply the energy by the following conversion ratio: 1e-9 joules/nanojoule.
Since one nanojoule is equal to 1e-9 joules, you can use this simple formula to convert:
The energy in joules is equal to the energy in nanojoules multiplied by 1e-9.
For example, here's how to convert 5 nanojoules to joules using the formula above.
How Many Joules Are in a Nanojoule?
There are 1e-9 joules in a nanojoule, which is why we use this value in the formula above.
Our nanojoule to joule calculator automatically converts your energy measurements with full decimal and scientific precision across US customary, imperial, and SI metric standards.
Nanojoules and joules are both units used to measure energy. Keep reading to learn more about each unit.
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. [1]
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.
What Is a Joule?
Coherent SI unit of energy and work (1 W·s = 1 N·m). It serves as a primary reference unit for measuring energy across scientific and practical applications. [2]
The joule is classified as an International System of Units (SI) unit of energy. Joules can be abbreviated as J; for example, 1 joule can be written as 1 J.
As the primary coherent reference unit for energy in this category, all other energy units are mathematically anchored to the joule (J).
In practice, joules (J) are widely used across standard energy applications within International System of Units (SI) workflows, engineering documentation, and technical data sheets.
When converting energy between nanojoules (nJ) and joules (J), keep full floating-point precision (1 nJ = 1e-9 J; 1 J = 999,999,999.9999999 nJ) during intermediate calculations and round only the final joule figure to match your instrument tolerance.
More Nanojoule & Joule Conversions
Need to calculate in the opposite direction? Use our joules to nanojoules calculator to switch your starting unit immediately. You can also explore related tools such as converting joules to nanojoules, converting calories to joules, or converting kilojoules to joules.
Convert from Nanojoules
Frequently Asked Questions
References
- [1]NIST CODATA StandardNIST CODATA (CODATA Energy & Thermodynamic Constants)·Energy Metrology Standard — Nanojoules (nJ) to Joules (J)
- [2]NIST SP 811 SpecificationNIST SP 811 (NIST SP 811 App. B.9 (Energy, Work & Heat))·Unit Specifications: Nanojoule (nJ) & Joule (J)
- [3]BIPM ReferenceBIPM (Derived SI Unit: Joule (J))·Conversion Factors & Mathematical Basis (nJ to J)