Rad to Gray

Convert rad to gray instantly.

1 rad = 0.01 Gy (exact)

From

Ad space reserved · 728×90 / 320×100

How it’s calculated

Gy = rad × 0.01

Multiply the value in rad by 0.01.
To go back, divide by 0.01 (or multiply by 100).
1 rad = 0.01 Gy · 1 Gy = 100 rad

Quick examples

1 rad (dose) = 0.01 gray · 1 Gy = 100 rad

1 rad (dose) = 0.01 gray
5 rad = 0.05 gray
10 rad = 0.1 gray
25 rad = 0.25 gray
100 rad = 1 gray

Rad to gray conversion table

rad (dose) (rad) to gray (Gy)
Rad (rad)	Gray (Gy)
0.1 rad	0.001 Gy
0.5 rad	0.005 Gy
1 rad	0.01 Gy
2 rad	0.02 Gy
3 rad	0.03 Gy
4 rad	0.04 Gy
5 rad	0.05 Gy
6 rad	0.06 Gy
7 rad	0.07 Gy
8 rad	0.08 Gy
9 rad	0.09 Gy
10 rad	0.1 Gy
15 rad	0.15 Gy
20 rad	0.2 Gy
25 rad	0.25 Gy
30 rad	0.3 Gy
40 rad	0.4 Gy
50 rad	0.5 Gy
75 rad	0.75 Gy
100 rad	1 Gy
250 rad	2.5 Gy
500 rad	5 Gy
1,000 rad	10 Gy

About these units

Rad (dose) (rad)

other

1 rad = 0.01 Gy (exact)

An older unit of absorbed dose: exactly 0.01 Gy.

Source: NIST SP 811 / Handbook 44

Gray (Gy)

SI (metric)

Base unit

The SI unit of absorbed radiation dose: 1 joule of energy per kilogram.

Source: BIPM SI Brochure (9th ed.)

Frequently asked questions

How do I convert rad to gray?

Use Gy = rad × 0.01. Multiply the value in rad by 0.01.

How many gray are in 1 rad (dose)?

1 rad (dose) (rad) equals 0.01 gray (Gy).

How many rad are in 1 gray?

1 gray (Gy) equals 100 rad (rad).

What is 10 rad in Gy?

10 rad = 0.1 gray.

What is a rad (dose)?