Square Meter (m²) is used as the internal base unit. Every value you enter is first converted to Square Meter using exact SI factors, then translated to the requested unit with the same data pulled from the SI Brochure and NIST SP 811.

Key permeability relationships

1 Darcy = 9.8692e-13 Square Meter
1 Millidarcy = 9.8692e-16 Square Meter
1 Microdarcy = 9.8692e-19 Square Meter
1 Nanodarcy = 9.8692e-22 Square Meter
1 Square Micron = 1.0000e-12 Square Meter

Where permeability units are used

Process engineers, laboratory technicians, and petroleum specialists monitor these fluid properties to control pumps, pipelines, and analytical instruments. The permeability converter covers real-world units such as Square Meter and Darcy, giving teams a trusted reference when cross-checking data between labs, suppliers, and regulatory filings.

Tips for accurate permeability conversions

Always verify the unit symbol in your worksheet—this converter normalizes values through Square Meter, which is the SI reference for permeability measurements.
When jumping between Square Meter and Darcy, watch metric prefixes and rounding. A misplaced milli-, micro-, or kilo- prefix can produce errors of several orders of magnitude.
Document the context (test conditions, instrument resolution, uncertainty) whenever you publish permeability conversions so coworkers and auditors can reproduce your results.

All Converters

Common Unit Systems