Gray to Milligray (Gray to Milligray)
Result
1,000 Milligray
Formula
Milligray = Gray × 1,000
1 Gray = 1,000 Milligray, and 1 Milligray = 0.001 Gray.
One gray is one joule of energy absorbed per kilogram; the older rad is 0.01 Gy. One becquerel is one decay per second; the curie is exactly 3.7 × 10¹⁰ Bq.
Worked examples
- 1 Gray × 1,000 = 1,000 Milligray
- 10 Gray × 1,000 = 10,000 Milligray
- 100 Gray × 1,000 = 100,000 Milligray
Common mistakes
- Gray measures absorbed energy; the sievert measures biological effect (equivalent dose). They are only numerically equal for X-rays, gamma and beta radiation.
- Becquerels describe how radioactive a source is, not the dose a person receives.
Gray to Milligray table
| Gray (Gray) | Milligray (Milligray) |
|---|---|
| 1 | 1,000 |
| 2 | 2,000 |
| 5 | 5,000 |
| 10 | 10,000 |
| 20 | 20,000 |
| 50 | 50,000 |
| 100 | 100,000 |
| 1,000 | 1,000,000 |
The units
- Gray (Gray)
- A unit of radiation.
- Milligray (Milligray)
- 1 Milligray = 0.001 Gray.
Sources for these factors
- The International System of Units (SI Brochure), 9th edition — BIPM
- Guide for the Use of the International System of Units (SP 811), Appendix B: conversion factors — NIST
Last reviewed against these sources. An automated check recomputes every factor from its definition on each build. How we check accuracy