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Trusted unit conversions based on SI and NIST scientific standards

Radiation Exposure Converter

Convert radiation exposure measurements.

Popular Radiation-Exposure Conversions

Complete List of Radiation-Exposure Units for Conversion

1 Roentgen [R] = 0.000258000 Coulomb per Kilogram [C/kg]

Roentgen to Coulomb per Kilogram, Coulomb per Kilogram to Roentgen

1 Millicoulomb per Kilogram [mC/kg] = 0.00100000 Coulomb per Kilogram [C/kg]

Millicoulomb per Kilogram to Coulomb per Kilogram, Coulomb per Kilogram to Millicoulomb per Kilogram

How this radiation-exposure converter works

Coulomb per Kilogram (C/kg) is used as the internal base unit. Every value you enter is first converted to Coulomb per Kilogram using exact SI factors, then translated to the requested unit with the same data pulled from the SI Brochure and NIST SP 811.

Key radiation-exposure relationships

  • 1 Roentgen = 2.5800e-4 Coulomb per Kilogram
  • 1 Millicoulomb per Kilogram = 0.001 Coulomb per Kilogram

Where radiation-exposure units are used

Medical physicists, radiation safety officers, and dosimetrists use these radiation units to track exposure, dose, and regulatory compliance. The radiation-exposure converter covers real-world units such as Coulomb per Kilogram and Roentgen, giving teams a trusted reference when cross-checking data between labs, suppliers, and regulatory filings.

Tips for accurate radiation-exposure conversions

  • Always verify the unit symbol in your worksheet—this converter normalizes values through Coulomb per Kilogram, which is the SI reference for radiation-exposure measurements.
  • When jumping between Coulomb per Kilogram and Roentgen, 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 radiation-exposure conversions so coworkers and auditors can reproduce your results.
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