microroentgens, µR

Medium

Result, microsieverts0.00965315519 µSv1 R = 0.009653 Gy ·Soft tissue, w_R = 1Estimate for photon radiation — R is defined for X/gamma. The medium factor holds for gamma ~0.1–3 MeV; below 100 keV it is rougher. Not valid for alpha/neutrons.

Cross-family dose conversions (Sv↔Gy↔R) are estimates that depend on radiation type and medium (w_R, µ_en/ρ); conversions within one family are exact. Verify against accredited methods for official decisions.

How to convert microroentgens to microsieverts

For gamma radiation in soft tissue 1 µR = 0.00965316 µSv. Enter a number above — the conversion uses this factor.

The roentgen is the exposure dose unit, defined for photons (gamma, X-ray). Conversion to absorbed and equivalent dose depends on the medium: for air 1 R ≈ 0.00876 Gy, soft tissue ≈ 0.0096 Gy, water ≈ 0.0097 Gy. It does not apply to alpha or neutron radiation.

For a different medium or other units, open the full dose converter: the medium (air, tissue, water) is selected explicitly, plus sievert, rem, gray, rad and roentgen.

The same factor applies to dose rate: 1 µR/h = 0.00965316 µSv/h. This is how dosimeter readings are converted.

Examples: 1 µR = 0.00965316 µSv; 10 µR = 0.0965316 µSv; 100 µR = 0.965316 µSv; 1,000 µR = 9.65316 µSv. Reverse: 1 µSv = 103.593 µR.