What Is This Tool?
This online converter allows you to transform values from millirads, a historic radiation dose unit, to teragrays, an SI-derived unit for extremely large absorbed doses. It helps bridge old measurement systems with modern scientific scales.
How to Use This Tool?
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Enter the dose magnitude in millirad (mrd) in the input field
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Select millirad as the input unit and teragray as the output unit
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Click the convert button to see the equivalent value in teragray (TGy)
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Review example conversions to better understand the scale difference
Key Features
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Converts radiation absorbed dose units between millirad and teragray
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Supports comparison of very small and exceptionally large dose values
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Browser-based tool requiring no installation
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Provides sample conversions to illustrate unit relationships
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Useful for theoretical and scientific dose scaling applications
Examples
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10 millirad equals 1×10⁻¹⁶ teragray
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100 millirad equals 1×10⁻¹⁵ teragray
Common Use Cases
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Converting diagnostic X-ray doses from older rad-based units to modern SI units
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Modeling energy deposition in extreme radiation environments like nuclear accidents
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Supporting astrophysics and high-energy physics dose simulations
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Cross-scale dose analysis for environmental and occupational monitoring
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Calibrating instruments using legacy and contemporary unit systems
Tips & Best Practices
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Understand the vast scale difference between millirad and teragray before conversion
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Use conversions mainly for analytical or theoretical purposes due to scale extremes
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Refer to provided examples to verify expected results
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Check unit selections carefully to avoid confusion between small and large dose units
Limitations
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Millirads measure very small radiation doses, while teragrays represent extraordinarily large absorbed doses
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Due to the extreme scale difference, practical direct equivalence is uncommon
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Conversion is mostly relevant in theoretical or cross-scale scientific contexts
Frequently Asked Questions
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What is a millirad (mrd)?
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A millirad is one thousandth of a rad, an older unit for measuring absorbed radiation dose, equal to 1×10⁻⁵ gray.
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What does teragray (TGy) measure?
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Teragray is an SI unit representing an extremely large absorbed radiation dose equal to 10¹² gray.
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Why convert from millirad to teragray?
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Converting helps express tiny legacy dose values as extremely small fractions of very large doses, useful in theoretical high-energy physics and radiation studies.
Key Terminology
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Millirad (mrd)
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A legacy CGS unit of absorbed radiation dose equal to one thousandth of a rad.
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Teragray (TGy)
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An SI-derived unit of absorbed radiation dose equal to 10¹² gray, used for extremely large dose measurements.
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Gray (Gy)
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The SI unit of absorbed radiation dose, defined as one joule of energy deposited per kilogram of matter.