Parker to Roentgen Conversion

Convert between Parker and Roentgen quickly and accurately.

From Parker

To Roentgen

How to Convert Parker to Roentgen

Conversion Formula

1 P = 1 R

1 R = 1 P

Example

Convert 15 P to R:

15 P = 15 × 1 R = 15 R

Unit Information

Learn about the radiation exposure units you're converting between

Parker

Definition

A unit of radiation exposure equal to 2.58 × 10^-4 coulomb per kilogram, equivalent to one roentgen.

History/Origin

Named after Robert Parker, a physicist who contributed to radiation dosimetry and measurement techniques.

Current Use

Used in specialized radiation dosimetry applications and historical radiation measurements.

Multiplier

Offset

Roentgen

Definition

A unit of radiation exposure equal to 2.58 × 10^-4 coulomb per kilogram, originally defined as the quantity of X-rays that produces one electrostatic unit of charge in one cubic centimeter of air.

History/Origin

Named after Wilhelm Conrad Röntgen (1845-1923), the German physicist who discovered X-rays in 1895.

Current Use

Still widely used in medical imaging, radiation therapy, and radiation protection, particularly in the United States.

Multiplier

Offset