Convert 1 Megagray to Gigagray

1 MGy (Megagray) is equal to 0.001 GGy (Gigagray). To convert from Megagray to Gigagray, multiply by 0.001 or divide by 999.9999999999999.

• 1 MGy × 0.001 = 0.001 GGy
• 1 MGy ÷ 1000 = 0.001 GGy