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Radiation Dose Converter: Convert Sievert, Millisievert and More

This free radiation dose converter converts 7 units, including sievert, millisievert and microsievert. Type a value, choose the units and read the answer, plus the value in every other unit.

By Debmedia Technologies LLP · Kolkata, India · Updated

What Is It and When Do You Need It?

Radiation dose describes the effect of radiation on the body. The sievert is the SI unit of dose equivalent and the rem is the older unit For X-rays and gamma rays, one gray equals one sievert and one rad equals one rem.

This converter handles 7 units for sievert and shows the result in all of them at once, so you rarely need a second lookup.

How to Use This Tool

  1. Type the value you want to convert.
  2. Choose the unit you have in the From list.
  3. Choose the unit you want in the To list.
  4. Press Convert and read the answer and the table of every unit.

How the Calculation Works

Every unit is stored as a multiple of one reference unit (the sievert). To convert, the value is multiplied into the reference unit and then divided by the size of the target unit. All factors are exact or taken from standard definitions, and results show up to ten significant digits.

Worked Example

You enterYou get
1 Sv1000 mSv
10 Sv10000000 µSv
100 mSv0.1 Sv

Reference values:

FromTo
1 Sievert1000 mSv
1 Sievert1000000 µSv
1 Sievert100 rem
1 Sievert100000 mrem
1 Sievert1 Gy
1 Sievert100 rad

Common Uses

  • Reading medical imaging and safety reports.
  • Comparing background radiation figures.
  • Converting old rem values to sieverts.
  • Radiation protection study.

Tips and Common Mistakes

  • One sievert is 100 rem.
  • The gray and rad measure absorbed energy; the conversion to sieverts only holds for X-rays and gamma rays.
  • Use the table under the answer to see the same value in every unit.

Next, you may need the length converter, area converter, volume converter, weight and mass converter.

Everything runs in your browser. Nothing you type is uploaded, stored or sent to any outside service.

Frequently Asked Questions

Choose sievert in the From list and millisievert in the To list, type your value and press Convert. For example 1 Sv equals 1000 mSv.
It uses the exact or standard definitions of each unit and shows up to ten significant digits. It is suitable for school, cooking, travel, engineering estimates and general use.
Yes. Decimals, commas and scientific notation such as 1.5e6 are accepted. Very large and very small results are shown in scientific notation.
No. The conversion runs in your browser and nothing is sent to us.

Disclaimer: results are calculated in your browser from the numbers you enter. Check important results before you rely on them for money, health, safety or legal decisions.