Convert Grays to Micrograys

Convert Grays (Gy) to Micrograys (µGy) instantly and accurately.

Grays (Gy)
Micrograys (µGy)

Conversion Formula

µGy = Gy × 1000000

About Grays

The gray (Gy) is the SI coherent unit of absorbed radiation dose, defined as 1 joule of energy deposited per kilogram of matter. Named after Harold Gray (British radiobiologist, 1905-1965). Used globally in radiotherapy: curative tumour doses 40-80 Gy fractionated; total body irradiation before bone marrow transplant 12-14 Gy. 1 Gy = 1 J/kg = 100 rad.

About Micrograys

The microgray (µGy) equals 10⁻⁶ Gy. Typical organ doses from diagnostic X-ray procedures: chest X-ray ~0.01-0.1 µGy; mammography mean glandular dose ~1-3 mGy (i.e. 1000-3000 µGy); dental bitewing ~1-5 µGy. IAEA Safety Reports quote entrance surface doses in µGy for patient dose surveys. 1 µGy = 10⁻⁶ Gy.

Quick Reference Table

Grays (Gy)Micrograys (µGy)
1 Gy1000000 µGy
2 Gy2000000 µGy
5 Gy5000000 µGy
10 Gy10000000 µGy
25 Gy25000000 µGy
50 Gy50000000 µGy
100 Gy100000000 µGy

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