Environmental Dose Converter
Gray
Gy
Milligray
mGy
Microgray
μGy
Nanogray
nGy
Kilogray
kGy
Centigray
cGy
Joule per kilogram
J/kg
Rad
rad
Millirad
mrad
Erg per gram
erg/g
Hover any row to copy or use as input. Gy↔Sv conversion requires the radiation weighting factor WR.
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Convert between absorbed dose units (gray, milligray, microgray, centigray, kilogray, J/kg, rad, millirad, erg/g) and equivalent dose units (sievert, millisievert, microsievert, nanosievert, rem, millirem, microrem) in two separate tabs. Includes real-world reference values for natural background radiation, medical imaging doses, occupational limits (NRC/ICRP), and radiation therapy. Adjustable significant figures, scientific notation toggle, and one-click copy.
How to Use
- 1Choose the Absorbed Dose tab (Gy/rad) or Equivalent Dose tab (Sv/rem)
- 2Enter a value in the From field and select the source unit
- 3Select the target unit in the To dropdown to see the instant result
- 4Expand the results panel to see all unit conversions at once
- 5Open the Reference panel for dose guidelines and real-world examples
- 6Hover any row to copy or use as the new input
- 7Note: converting between absorbed and equivalent dose requires the radiation weighting factor W_R
Features
- Absorbed Dose tab: Gy, mGy, μGy, nGy, kGy, cGy, J/kg, rad, mrad, erg/g
- Equivalent Dose tab: Sv, mSv, μSv, nSv, rem, mrem, μrem
- Instant two-way conversion with From/To selectors and swap button
- 3–12 significant figures and scientific notation toggle
- Reference panel with background radiation, medical imaging, NRC occupational limits
- Note on W_R weighting factor for Gy→Sv conversion
- 100% browser-based - all calculations in JavaScript
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