Attojoules to Microjoules Converter
Enter the energy in attojoules below to convert it to microjoules.
Convert Attojoules to Microjoules
Enter a value in attojoules (aJ) to convert to microjoules (µJ).
Attojoule to Microjoule Conversion Table
Table showing various attojoule measurements converted to microjoules. Click any preset value or arrow to load it into the converter.
| Attojoules (aJ) | Microjoules (µJ) |
|---|---|
| 1 aJ | 1e-12 µJ |
| 10 aJ | 1e-11 µJ |
| 100 aJ | 1e-10 µJ |
| 1,000 aJ | 1e-9 µJ |
| 10,000 aJ | 0.00000001 µJ |
| 100,000 aJ | 0.0000001 µJ |
| 1,000,000 aJ | 0.000001 µJ |
| 5,000,000 aJ | 0.000005 µJ |
| 10,000,000 aJ | 0.00001 µJ |
| 25,400,000 aJ | 0.0000254 µJ |
How to Convert Attojoules to Microjoules
To convert attojoules to microjoules, multiply the energy by the following conversion ratio: 1e-12 microjoules/attojoule.
Since one attojoule is equal to 1e-12 microjoules, you can use this simple formula to convert:
The energy in microjoules is equal to the energy in attojoules multiplied by 1e-12.
For example, here's how to convert 5 attojoules to microjoules using the formula above.
How Many Microjoules Are in an Attojoule?
There are 1e-12 microjoules in an attojoule, which is why we use this value in the formula above.
Our attojoule to microjoule calculator automatically converts your energy measurements with full decimal and scientific precision across US customary, imperial, and SI metric standards.
Attojoules and microjoules are both units used to measure energy. Keep reading to learn more about each unit.
What Is an Attojoule?
An attojoule is a unit of energy equal to 1/999,999,999,999,999,900 of a joule (1e-18 J). 10⁻¹⁸ Joules. [1]
The attojoule is classified as a metric and SI-compatible unit of energy. Attojoules can be abbreviated as aJ; for example, 1 attojoule can be written as 1 aJ.
When working with attojoules (aJ) in formulas or technical specifications, always verify whether your target system uses SI metric, US customary, or British imperial standards.
In practice, attojoules (aJ) 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 Microjoule?
A microjoule is a unit of energy equal to 1/1,000,000 of a joule (0.000001 J). One-millionth of a Joule. [2]
The microjoule is classified as a metric and SI-compatible unit of energy. Microjoules can be abbreviated as µJ; for example, 1 microjoule can be written as 1 µJ.
In the metric system, "micro" is the standard SI prefix for millionths, or 10⁻⁶. This makes the microjoule (µJ) a convenient decimal multiple of the joule (J).
In practice, microjoules (µJ) 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 attojoules (aJ) and microjoules (µJ), keep full floating-point precision (1 aJ = 1e-12 µJ; 1 µJ = 999,999,999,999.9999 aJ) during intermediate calculations and round only the final microjoule figure to match your instrument tolerance.
More Attojoule & Microjoule Conversions
Need to calculate in the opposite direction? Use our microjoules to attojoules calculator to switch your starting unit immediately. You can also explore related tools such as converting microjoules to attojoules, converting joules to calories, or converting calories to joules.
Convert from Attojoules
Frequently Asked Questions
References
- [1]NIST CODATA StandardNIST CODATA (CODATA Energy & Thermodynamic Constants)·Energy Metrology Standard — Attojoules (aJ) to Microjoules (µJ)
- [2]NIST SP 811 SpecificationNIST SP 811 (NIST SP 811 App. B.9 (Energy, Work & Heat))·Unit Specifications: Attojoule (aJ) & Microjoule (µJ)
- [3]BIPM ReferenceBIPM (Derived SI Unit: Joule (J))·Conversion Factors & Mathematical Basis (aJ to µJ)