Darcies to Microdarcies Converter
Enter the permeability in darcies below to convert it to microdarcies.
Convert Darcies to Microdarcies
Enter a value in darcies (D) to convert to microdarcies (µD).
Darcy to Microdarcy Conversion Table
Table showing various darcy measurements converted to microdarcies. Click any preset value or arrow to load it into the converter.
How to Convert Darcies to Microdarcies
To convert darcies to microdarcies, multiply the permeability by the following conversion ratio: 1,000,000 microdarcies/darcy.
Since one darcy is equal to 1,000,000 microdarcies, you can use this simple formula to convert:
The permeability in microdarcies is equal to the permeability in darcies multiplied by 1,000,000.
For example, here's how to convert 5 darcies to microdarcies using the formula above.
How Many Microdarcies Are in a Darcy?
There are 1,000,000 microdarcies in a darcy, which is why we use this value in the formula above.
Our darcy to microdarcy calculator automatically converts your permeability measurements with full decimal and scientific precision across US customary, imperial, and SI metric standards.
Darcies and microdarcies are both units used to measure permeability. Keep reading to learn more about each unit.
What Is a Darcy?
A darcy is a unit of permeability equal to 9.869233e-13 square meters (m²), the base unit for permeability. Petroleum reservoir permeability unit (≈ 0.986923 µm²). [1]
The darcy is classified as a standard unit of permeability. Darcies can be abbreviated as D; for example, 1 darcy can be written as 1 D.
When working with darcies (D) in formulas or technical specifications, always verify whether your target system uses SI metric, US customary, or British imperial standards.
In practice, darcies (D) are widely used across fine-tolerance laboratory, analytical, and micro-scale permeability measurements within international standard workflows, engineering documentation, and technical data sheets.
What Is a Microdarcy?
A microdarcy is a unit of permeability equal to 1/1,013,249,965,828,144,900 of a square meter (9.869233e-19 m²). Tight shale permeability unit (10⁻⁶ Darcy). [2]
The microdarcy is classified as a standard unit of permeability. Microdarcies can be abbreviated as µD; for example, 1 microdarcy can be written as 1 µD.
In the metric system, "micro" is the standard SI prefix for millionths, or 10⁻⁶. This makes the microdarcy (µD) a convenient decimal multiple of the square meter (m²).
In practice, microdarcies (µD) are widely used across fine-tolerance laboratory, analytical, and micro-scale permeability measurements within international standard workflows, engineering documentation, and technical data sheets.
When converting permeability between darcies (D) and microdarcies (µD), keep full floating-point precision (1 D = 1,000,000 µD; 1 µD = 0.000001 D) during intermediate calculations and round only the final microdarcy figure to match your instrument tolerance.
More Darcy & Microdarcy Conversions
Need to calculate in the opposite direction? Use our microdarcies to darcies calculator to switch your starting unit immediately. You can also explore related tools such as converting microdarcies to darcies, converting square meters (m²) to microdarcies, or converting darcies to square meters (m²).
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Frequently Asked Questions
References
- [1]NIST OWM StandardNIST OWM (SI Units — Length)·Permeability Metrology Standard — Darcies (D) to Microdarcies (µD)
- [2]BIPM SpecificationBIPM (SI Base Unit: Metre (m))·Unit Specifications: Darcy (D) & Microdarcy (µD)
- [3]NIST HB 133 ReferenceNIST HB 133 (NIST Handbook 133 (2019 Ed.))·Conversion Factors & Mathematical Basis (D to µD)