Which units does this converter support?

It supports Sv, mSv, µSv, rem, and mrem.

What value should I enter?

Enter a non-negative equivalent dose in the selected input unit.

Does the result include all supported units?

Yes. The JSON result lists equivalent values in all five supported units.

Can this converter convert Sv to Gy?

No. Sv is equivalent dose, while Gy is absorbed dose. Converting between them requires a radiation weighting factor.

How precise is the displayed result?

You can choose between 0 and 10 decimal places.

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Radiation Equivalent Dose Converter (Sv / rem)

Convert radiation equivalent dose between Sv (sievert, SI base), mSv (1 = 0.001 Sv), µSv (1 = 1e-6 Sv), rem (1 = 0.01 Sv), and mrem (1 = 1e-5 Sv). Converts via Sv to the target unit and lists the equivalent value in all five units. ⚠️ Equivalent dose is NOT absorbed dose: equivalent dose = absorbed dose (Gy) × radiation weighting factor w_R (X/γ/β = 1, neutrons 5–20, alpha 20). Converting Sv → Gy requires dividing by w_R — use the absorbed-dose converter for that side. Reference values: natural background ≈ 3 mSv/yr, chest CT ≈ 7 mSv, annual occupational limit ≈ 50 mSv/yr, ARS threshold ≈ 1 Sv.

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2 examples

Chest CT: 7 mSv → rem = 0.7

7 mSv × 0.001 = 0.007 Sv ÷ 0.01 = 0.7 rem = 7000 µSv. Typical chest CT equivalent dose.

{"result":"7 mSv = 0.7 rem. All units: Sv=0.007, mSv=7, µSv=7000, rem=0.7, mrem=700.","metadata":{"input":{"inputUnit":"mSv","value":7,"outputUnit":"rem"},"result":{"outputValue":0.7,"outputUnit":"rem","Sv":0.007,"mSv":7,"µSv":7000,"rem":0.7,"mrem":700}}}

Background: 3 mSv/yr → µSv = 3000

3 mSv × 1000 = 3000 µSv = 300 mrem. Average annual natural background radiation.

{"result":"3 mSv = 3000 µSv. All units: Sv=0.003, mSv=3, µSv=3000, rem=0.3, mrem=300.","metadata":{"input":{"inputUnit":"mSv","value":3,"outputUnit":"µSv"},"result":{"outputValue":3000,"outputUnit":"µSv","Sv":0.003,"mSv":3,"µSv":3000,"rem":0.3,"mrem":300}}}

Inputs

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4 options

SettingsAdjust formats, ranges, numbers, and modes.4

Input unitselectOptionalValuenumberRequiredEquivalent dose in the selected Input unit. Must be non-negative.Output unitselectOptionalDecimal PlacesnumberOptional

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Radiation Equivalent Dose Converter (Sv / rem)

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Key facts

Overview

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Examples

1. Convert a chest CT reference dose

2. Express annual background radiation in microsieverts

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