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Gray Converter

Convert Gray to Hectogray and more • 73 conversions

Result

0

1 0
Conversion Formula
1 = ---
Quick Reference
1 = 1
10 = 10
50 = 50
100 = 100
500 = 500
1000 = 1000

Unit Explanations

GrayGy

Source Unit

The gray (Gy) is the SI derived unit of absorbed dose of ionizing radiation, defined as the absorption of one joule of radiation energy by one kilogram of matter. It quantifies the amount of energy deposited by radiation in a specified mass of material, which in biological contexts is often human tissue. The gray is crucial in assessing radiation exposure and its potential biological effects, and it serves as a fundamental unit in radiation safety and protection protocols.

1 Gy = 1 J/kg

Current Use

The gray is widely used in medical fields, particularly in radiation therapy for cancer treatment, where precise dosages are critical for effective treatment while minimizing damage to surrounding healthy tissue. It is also employed in radiological assessments, nuclear power, and safety protocols for radiation workers. Various international organizations, including the International Atomic Energy Agency (IAEA), utilize the gray for consistent communication regarding radiation exposure levels.

Fun Fact

The gray is equivalent to 100 rad, an older unit of absorbed dose.

Hectograyhg

Target Unit

The hectogray (hg) is a unit of measurement for absorbed dose of ionizing radiation, equivalent to 100 gray (Gy). The gray is the SI unit of absorbed dose, defined as the absorption of one joule of radiation energy by one kilogram of matter. As a derived unit, the hectogray is used to denote larger quantities of absorbed radiation, providing a more manageable figure in contexts where doses are particularly high, such as in radiation therapy and radiological assessments.

1 hg = 100 Gy

Current Use

The hectogray is commonly used in medical settings, particularly in radiation therapy for cancer treatment, where precise dosage is critical for effective patient care. It is also utilized in research and environmental studies involving radiation exposure assessments. Regulatory bodies often reference hectograys in guidelines for safe radiation levels, making the unit essential for health professionals, scientists, and safety regulators worldwide.

Fun Fact

The gray is named after Louis Harold Gray, who contributed to the understanding of radiation effects on biological tissues.

Decimals:
Scientific:OFF

Result

0

1
0
Conversion Formula
1 = ...
1→1
10→10
100→100
1000→1000

📐Conversion Formula

= × 1.00000

How to Convert

To convert to , multiply the value by 1.00000. This conversion factor represents the ratio between these two units.

Quick Examples

1
=
1.000
10
=
10.00
100
=
100.0

💡 Pro Tip: For the reverse conversion (), divide by the conversion factor instead of multiplying.

Gy

Gray

radiationSI Unit

Definition

The gray (Gy) is the SI derived unit of absorbed dose of ionizing radiation, defined as the absorption of one joule of radiation energy by one kilogram of matter. It quantifies the amount of energy deposited by radiation in a specified mass of material, which in biological contexts is often human tissue. The gray is crucial in assessing radiation exposure and its potential biological effects, and it serves as a fundamental unit in radiation safety and protection protocols.

History & Origin

The gray was introduced in 1975 by the International System of Units (SI) as the unit of absorbed dose to provide a standardized measurement for radiation exposure. Its creation was a response to the need for a unified system that could facilitate consistency in scientific research and practical applications in radiology, nuclear medicine, and radiation therapy.

Etymology: The unit is named after the British physicist Louis Harold Gray, who made significant contributions to the field of radiation therapy and the study of radiation's effects on biological tissue.

1975: The gray is officially adopted...

Current Use

The gray is widely used in medical fields, particularly in radiation therapy for cancer treatment, where precise dosages are critical for effective treatment while minimizing damage to surrounding healthy tissue. It is also employed in radiological assessments, nuclear power, and safety protocols for radiation workers. Various international organizations, including the International Atomic Energy Agency (IAEA), utilize the gray for consistent communication regarding radiation exposure levels.

HealthcareNuclear EnergyRadiologyEnvironmental Science

💡 Fun Facts

  • The gray is equivalent to 100 rad, an older unit of absorbed dose.
  • The gray is used in radiation therapy to ensure that the cancerous tissue receives a lethal dose while surrounding healthy tissue receives a much lower dose.
  • Louis Harold Gray was the first scientist to quantify the effects of radiation on living tissue, leading to advancements in cancer treatment.

📏 Real-World Examples

2 Gy
A patient receives a single dose of radiation for cancer treatment.
20 Gy
A radiation worker's annual limit for radiation exposure is set.
10 mGy
Diagnostic imaging procedures, such as CT scans, expose patients to radiation.
1.5 Gy
Radiation therapy for a thyroid condition requires a specific dose.
0.5 Gy
Environmental evaluations assess radiation levels after a nuclear accident.

🔗 Related Units

Rad (1 Gy = 100 rad)Rem (1 Gy = 100 rem (in terms of biological effect depending on radiation type))Sievert (1 Sv = 1 Gy for photons; used for equivalent dose measurement.)Joule (1 Gy is defined as 1 J/kg, linking it to energy absorption.)
hg

Hectogray

radiationNon-SI

Definition

The hectogray (hg) is a unit of measurement for absorbed dose of ionizing radiation, equivalent to 100 gray (Gy). The gray is the SI unit of absorbed dose, defined as the absorption of one joule of radiation energy by one kilogram of matter. As a derived unit, the hectogray is used to denote larger quantities of absorbed radiation, providing a more manageable figure in contexts where doses are particularly high, such as in radiation therapy and radiological assessments.

History & Origin

The concept of measuring radiation dose emerged in the mid-20th century, coinciding with advancements in nuclear physics and medical applications. The gray was established as the SI unit of absorbed dose in 1975 by the International System of Units (SI) to provide a standardized measure for ionizing radiation exposure. The hectogray was introduced to simplify communication of larger doses, especially in clinical and research settings.

Etymology: The term 'hectogray' is derived from the prefix 'hecto-', which means one hundred, combined with 'gray', named after the British physicist Louis Harold Gray, who made significant contributions to radiation measurement.

1975: The gray was established as th...1956: The term 'gray' was first defi...

Current Use

The hectogray is commonly used in medical settings, particularly in radiation therapy for cancer treatment, where precise dosage is critical for effective patient care. It is also utilized in research and environmental studies involving radiation exposure assessments. Regulatory bodies often reference hectograys in guidelines for safe radiation levels, making the unit essential for health professionals, scientists, and safety regulators worldwide.

HealthcareNuclear EnergyEnvironmental Science

💡 Fun Facts

  • The gray is named after Louis Harold Gray, who contributed to the understanding of radiation effects on biological tissues.
  • The hectogray is particularly useful in medical settings where high doses of radiation are common, simplifying communication.
  • The use of different radiation units, including the hectogray, helps convey the complexities of radiation exposure in diverse fields.

📏 Real-World Examples

200 hg
A patient receives a dose of radiation during cancer treatment.
5 hg
An environmental study measures radiation in a contaminated area.
50 hg
A researcher measures radiation exposure in laboratory animals.
150 hg
A radiologist discusses a treatment plan indicating total dose.
10 hg
A safety officer evaluates a radiation facility's exposure limits.

🔗 Related Units

Gray (1 hg = 100 Gy)Milligray (1 hg = 100,000 mGy)Sievert (1 hg = 100 hSv (when considering biological effects))Centigray (1 hg = 1,000 cGy)

Frequently Asked Questions

How do I convert to ?

To convert to , multiply your value by 1. For example, 10 equals 10 .

What is the formula for to conversion?

The formula is: = × 1. This conversion factor is based on international standards.

Is this to converter accurate?

Yes! MetricConv uses internationally standardized conversion factors from organizations like NIST and ISO. Our calculations support up to 15 decimal places of precision, making it suitable for scientific, engineering, and everyday calculations.

Can I convert back to ?

Absolutely! You can use the swap button (⇄) in the converter above to reverse the conversion direction, or visit our to converter.

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