Rad to Femtogray Conversion

Convert between Rad and Femtogray quickly and accurately.

rd
fGy

How to Convert Rad to Femtogray

Conversion Formula

1 rd = 1E+13 fGy
1 fGy = 1E-13 rd

Example

Convert 15 rd to fGy:

15 rd = 15 × 1E+13 fGy = 2E+14 fGy

Unit Information

Learn about the radiation absorbed dose units you're converting between

Rad

rd

Definition

A unit of absorbed radiation dose equal to 0.01 gray, representing the amount of energy deposited in matter by ionizing radiation.

History/Origin

Acronym for "radiation absorbed dose", introduced in the 1950s for measuring radiation absorbed dose in biological tissue.

Current Use

Widely used in radiation therapy, medical physics, and radiation protection, particularly in the United States.

Multiplier

1

Offset

0

Femtogray

fGy

Definition

A unit of absorbed radiation dose equal to 10^-15 gray, used for ultra-small absorbed dose measurements.

History/Origin

Part of the SI metric system, where femto- is the prefix for 10^-15, used for ultra-small quantities.

Current Use

Used in radiation protection, environmental monitoring, and ultra-small-dose radiation measurements.

Multiplier

1E-13

Offset

0

Rad to Femtogray Conversion Table

Rad [rd] Femtogray [fGy]
1 rd 1E+13 fGy
10 rd 1E+14 fGy
25 rd 2E+14 fGy
50 rd 5E+14 fGy
100 rd 1E+15 fGy
0 rd 0E+0 fGy
-10 rd -1E+14 fGy
-40 rd -4E+14 fGy