Darcy to Millidarcy (D to mD) Converter & Formula
D × 1000 = mD
Calculation: 2 D × 1000 = 2000 mD
Common Darcy to Millidarcy Calculations
Quick-lookup reference table showing calculated equivalents for standard increments between Darcy (D) and Millidarcy (mD).
| Conversion & Equivalent Value | Scientific Notation |
|---|---|
| 0.001 D is equal to 1 mD (Millidarcy) | 1 × 10⁰ |
| 0.01 D is equal to 10 mD (Millidarcy) | 1 × 10¹ |
| 0.1 D is equal to 100 mD (Millidarcy) | 1 × 10² |
| 0.5 D is equal to 500 mD (Millidarcy) | 5 × 10² |
| 1 D is equal to 1000 mD (Millidarcy) | 1 × 10³ |
| 2 D is equal to 2000 mD (Millidarcy) | 2 × 10³ |
| 5 D is equal to 5000 mD (Millidarcy) | 5 × 10³ |
| 10 D is equal to 10000 mD (Millidarcy) | 1 × 10⁴ |
| 20 D is equal to 20000 mD (Millidarcy) | 2 × 10⁴ |
| 25 D is equal to 25000 mD (Millidarcy) | 2.5 × 10⁴ |
| 50 D is equal to 50000 mD (Millidarcy) | 5 × 10⁴ |
| 100 D is equal to 100000 mD (Millidarcy) | 1 × 10⁵ |
| 250 D is equal to 250000 mD (Millidarcy) | 2.5 × 10⁵ |
| 500 D is equal to 500000 mD (Millidarcy) | 5 × 10⁵ |
| 1000 D is equal to 1000000 mD (Millidarcy) | 1 × 10⁶ |
| Reciprocal & Equivalent Value | Scientific Notation |
|---|---|
| 1 mD is equal to 0.001 D (Darcy) | 1 × 10⁻³ |
| 5 mD is equal to 0.005 D (Darcy) | 5 × 10⁻³ |
| 10 mD is equal to 0.01 D (Darcy) | 1 × 10⁻² |
| 50 mD is equal to 0.05 D (Darcy) | 5 × 10⁻² |
| 100 mD is equal to 0.1 D (Darcy) | 1 × 10⁻¹ |
Real-World Context & Everyday Benchmarks
Tap to load into converterTo help contextualize these units in everyday life, science, and engineering, here are verified real-world reference points for Darcy (D) and Millidarcy (mD):
Darcy References:
- Highly productive commercial oil and gas sandstone reservoir 1 D
- Moderate commercial oil reservoir sand formation 0.1 D
- Tight gas sandstone requiring hydraulic fracturing stimulation 0.001 D
Millidarcy References:
- Shale gas hydraulic fracturing formation permeability target 0.01 mD
- Geothermal fractured crystalline granite reservoir permeability 50 mD
- High-permeability agricultural irrigation sandy soil 5000 mD
How to Convert Darcy to Millidarcy
Converting Darcy (D) to Millidarcy (mD) is a core calculation in Geological Intrinsic Permeability, which measures the capacity of a porous rock, sand, or geological formation to transmit fluids under a hydraulic pressure gradient governed by Darcy's Law. Both units reside within the International System of Units (SI) and share an identical physical dimension vector ([L²]), separated strictly by a decimal order-of-magnitude factor (10^3). Because this shift involves integer powers of 10, the conversion is mathematically exact and free from decimal rounding or irrational fractional loss. Exactly 1 Darcy equals 1000 Millidarcy.
Mathematical Conversion Derivation via Coherent SI Base Unit
Under the International System of Quantities (ISQ), dimensional conversion between non-SI units is rigorously resolved by bridging through the coherent SI base unit (square meter (m²)) without arbitrary rounding:
1 D = 9.869233 × 10⁻¹³ square meter (m²)1 mD = 9.869233 × 10⁻¹⁶ square meter (m²)V(mD) = V(D) × ( 9.869233 × 10⁻¹³ / 9.869233 × 10⁻¹⁶ ) = V(D) × 1000Value in Millidarcy = Value in Darcy × 1000Direct computational formula applied for standard conversion.To convert 50 Darcy (D) to Millidarcy (mD): multiply 50 by 1000 to get 50000 mD. At an industrial engineering scale, 240 D converts to 240000 mD.
Inverse check: 1 mD = 0.001 D.Understanding Darcy and Millidarcy
Darcy
DA Darcy (D) is a recognized unit for geological intrinsic permeability.
Applications & Practical Context
In practical geological permeability terms, a highly productive commercial oil and gas sandstone reservoir equals 1 D, a moderate commercial oil reservoir sand formation equals 0.1 D, a tight gas sandstone requiring hydraulic fracturing stimulation equals 0.001 D.
A physical magnitude of 1 D corresponds to 9.869233 × 10⁻¹³ m² in standard SI measurement.
1 D = 9.869233 × 10⁻¹³ m²Millidarcy
mDA Millidarcy (mD) is a decimal submultiple of the SI-derived unit for geological intrinsic permeability.
Applications & Practical Context
In practical geological permeability terms, a shale gas hydraulic fracturing formation permeability target equals 0.01 mD, a geothermal fractured crystalline granite reservoir permeability equals 50 mD, a high-permeability agricultural irrigation sandy soil equals 5000 mD.
A physical magnitude of 1 mD corresponds to 9.869233 × 10⁻¹⁶ m² in standard SI measurement.
1 mD = 9.869233 × 10⁻¹⁶ m²Domain Metrology & Engineering Applications
Darcy's Law of Porous Media Fluid Flow (Q = -kA/μ · ΔP/L)
Rigorously quantified in laboratory and field settings using core flooding Hassler sleeve permeameters, steady-state gas permeameters, and drill stem testing (DST) bottom-hole pressure gauges.
Applied across petroleum reservoir engineering, hydrogeological aquifer modeling, carbon capture and geological sequestration (CCS), and geothermal energy extraction under international metrology standard API RP 40, ISO 80000-4:2019.
Formulas, conversion coefficients, and base definitions on this page strictly adhere to the API RP 40, ISO 80000-4:2019 and the BIPM SI Brochure (9th Edition). Governed by Darcy's Law of Porous Media Fluid Flow (Q = -kA/μ · ΔP/L) under ISO 80000 dimensional vector [L²].
