Nanojoules to Gigajoules Converter
Enter the energy in nanojoules below to convert it to gigajoules.
Convert Nanojoules to Gigajoules
Enter a value in nanojoules (nJ) to convert to gigajoules (GJ).
Nanojoule to Gigajoule Conversion Table
Table showing various nanojoule measurements converted to gigajoules. Click any preset value or arrow to load it into the converter.
How to Convert Nanojoules to Gigajoules
To convert nanojoules to gigajoules, multiply the energy by the following conversion ratio: 1e-18 gigajoules/nanojoule.
Since one nanojoule is equal to 1e-18 gigajoules, you can use this simple formula to convert:
The energy in gigajoules is equal to the energy in nanojoules multiplied by 1e-18.
For example, here's how to convert 5 nanojoules to gigajoules using the formula above.
How Many Gigajoules Are in a Nanojoule?
There are 1e-18 gigajoules in a nanojoule, which is why we use this value in the formula above.
Our nanojoule to gigajoule calculator automatically converts your energy measurements with full decimal and scientific precision across US customary, imperial, and SI metric standards.
Nanojoules and gigajoules 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 Gigajoule?
A gigajoule is a unit of energy equal to 1,000,000,000 joules (J), the base unit for energy. Equal to 1,000,000,000 Joules, common in natural gas billing. [2]
The gigajoule is classified as an International System of Units (SI) unit of energy. Gigajoules can be abbreviated as GJ; for example, 1 gigajoule can be written as 1 GJ.
In the metric system, "giga" is the standard SI prefix for billions, or 10⁹. This makes the gigajoule (GJ) a convenient decimal multiple of the joule (J).
In practice, gigajoules (GJ) are widely used across large-scale industrial, bulk, and macro-level energy specifications within International System of Units (SI) workflows, engineering documentation, and technical data sheets.
When converting energy between nanojoules (nJ) and gigajoules (GJ), keep full floating-point precision (1 nJ = 1e-18 GJ; 1 GJ = 1e+18 nJ) during intermediate calculations and round only the final gigajoule figure to match your instrument tolerance.
More Nanojoule & Gigajoule Conversions
Need to calculate in the opposite direction? Use our gigajoules to nanojoules calculator to switch your starting unit immediately. You can also explore related tools such as converting gigajoules to nanojoules, converting joules to calories, or converting calories to joules.
Convert from Nanojoules
Frequently Asked Questions
References
- [1]NIST CODATA StandardNIST CODATA (CODATA Energy & Thermodynamic Constants)·Energy Metrology Standard — Nanojoules (nJ) to Gigajoules (GJ)
- [2]NIST SP 811 SpecificationNIST SP 811 (NIST SP 811 App. B.9 (Energy, Work & Heat))·Unit Specifications: Nanojoule (nJ) & Gigajoule (GJ)
- [3]BIPM ReferenceBIPM (Derived SI Unit: Joule (J))·Conversion Factors & Mathematical Basis (nJ to GJ)