Gy → rad

1 Gy = 100 rad.
Created by
Renato Passos, Eng. de Software
Reviewed by
Renato Passos, Eng. de Software

Last updated: Apr 18, 2026

rad
100,0

About this calculator

The Gray to Rad (Gy → rad) Absorbed Dose Calculator is an online tool that converts units of absorbed radiation dose. The absorbed dose is a measure of the amount of energy deposited by radiation in a specific mass of tissue. It works based on the relationship between Gray (Gy) and rad, where 1 Gy equals 100 rad.

This conversion is essential in various fields, such as nuclear medicine, radiotherapy, and radiological protection. The Gray is a unit of the International System of Units (SI) that quantifies the absorbed dose of ionizing radiation. The rad is an older unit still used in some contexts, especially in countries that have not adopted the SI.

When using this calculator, it's essential to keep in mind that the absorbed dose is different from the equivalent dose, which takes into account the biological effectiveness of the radiation. The absorbed dose is crucial for understanding the physical impact of radiation on tissues, but the equivalent dose is more relevant for assessing biological risk.

It's essential to use this tool carefully, inserting input values correctly and considering the application context. The conversion is straightforward, but interpreting the results should be done based on knowledge of the units and their applications.

Frequently asked questions

What is absorbed dose?

The absorbed dose is the amount of energy deposited by radiation in a specific mass of tissue.

What is the relationship between Gray and rad?

1 Gy equals 100 rad.

Why is it important to convert Gy to rad?

It's essential for various applications, such as nuclear medicine and radiological protection, where the absorbed dose needs to be quantified.

What is the difference between absorbed dose and equivalent dose?

The absorbed dose measures the energy deposited by radiation in tissues, while the equivalent dose considers the biological effectiveness of the radiation.

How to use this calculator correctly?

Insert input values correctly and consider the application context for accurate interpretation of results.

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