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☢️ Environmental Dose Converter

Convert between environmental dose units including rad, gray, sievert, and rem. Essential for radiological protection, environmental monitoring, and health physics.

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Common Conversions
Quick access to frequently used conversions
Unit Information

Scientific Units

Scientific and technical measurements

Gy
scientific
Gray
SI unit of absorbed dose, 1 Gy = 1 J/kg
mGy
scientific
Milligray
Milligray, 1 mGy = 0.001 Gy
μGy
scientific
Microgray
Microgray, 1 μGy = 0.000001 Gy
rad
scientific
Rad
Traditional unit of absorbed dose, 1 rad = 0.01 Gy
mrad
scientific
Millirad
Millirad, 1 mrad = 0.00001 Gy
Sv
scientific
Sievert
SI unit of equivalent dose, 1 Sv = 1 J/kg × radiation weighting factor
mSv
scientific
Millisievert
Millisievert, 1 mSv = 0.001 Sv
μSv
scientific
Microsievert
Microsievert, 1 μSv = 0.000001 Sv
rem
scientific
Rem
Traditional unit of equivalent dose, 1 rem = 0.01 Sv
mrem
scientific
Millirem
Millirem, 1 mrem = 0.00001 Sv
Gy/h
scientific
Gray per Hour
Absorbed dose rate in gray per hour
mGy/h
scientific
Milligray per Hour
Absorbed dose rate in milligray per hour
μGy/h
scientific
Microgray per Hour
Absorbed dose rate in microgray per hour
rad/h
scientific
Rad per Hour
Absorbed dose rate in rad per hour
mrad/h
scientific
Millirad per Hour
Absorbed dose rate in millirad per hour
Sv/h
scientific
Sievert per Hour
Equivalent dose rate in sievert per hour
mSv/h
scientific
Millisievert per Hour
Equivalent dose rate in millisievert per hour
rem/h
scientific
Rem per Hour
Equivalent dose rate in rem per hour
mrem/h
scientific
Millirem per Hour
Equivalent dose rate in millirem per hour
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Common Environmental Dose Conversions

Environmental Monitoring

Convert between different radiation dose units for environmental radiation monitoring and assessment.

Medical Physics

Convert medical radiation doses between SI units (gray, sievert) and traditional units (rad, rem).

Radiological Protection

Calculate and convert occupational and public radiation dose limits and measurements.

Environmental Dose Unit Categories

Absorbed Dose Units

Units that measure the energy absorbed by matter from ionizing radiation.

  • • Gray (Gy) - SI unit, 1 Gy = 1 J/kg
  • • Milligray (mGy) - 0.001 Gy
  • • Microgray (μGy) - 0.000001 Gy
  • • Rad (rad) - traditional unit, 1 rad = 0.01 Gy
  • • Millirad (mrad) - 0.00001 Gy

Equivalent Dose Units

Units that account for the biological effectiveness of different types of radiation.

  • • Sievert (Sv) - SI unit, accounts for radiation type
  • • Millisievert (mSv) - 0.001 Sv
  • • Microsievert (μSv) - 0.000001 Sv
  • • Rem (rem) - traditional unit, 1 rem = 0.01 Sv
  • • Millirem (mrem) - 0.00001 Sv

Dose Rate Units

Units that measure the rate at which radiation dose is received over time.

  • • Gy/h, mGy/h, μGy/h - absorbed dose rates
  • • Sv/h, mSv/h, μSv/h - equivalent dose rates
  • • Rad/h, mrad/h - traditional dose rates
  • • Rem/h, mrem/h - traditional equivalent rates

Technical Information

Unit Relationships

Understanding the relationships between different radiation dose units is crucial for accurate measurements and safety assessments.

Key Conversion Factors:

  • • 1 Gy = 100 rad (absorbed dose)
  • • 1 Sv = 100 rem (equivalent dose)
  • • 1 mGy = 0.1 rad
  • • 1 mSv = 0.1 rem
  • • 1 μGy = 0.1 mrad
  • • 1 μSv = 0.1 mrem

Common Dose Levels

Typical radiation dose levels encountered in various situations and their significance for health and safety.

Reference Values:

  • • Background radiation: 2-3 mSv/year
  • • Chest X-ray: 0.1 mSv
  • • CT scan: 10-20 mSv
  • • Annual occupational limit: 50 mSv
  • • Airline flight: 0.005 mSv/hour
  • • Nuclear power worker: 20 mSv/year