Report

Help us improve this tool

Radiation Dose Converter

Convert absorbed dose and equivalent dose units such as gray, rad, sievert, and rem.

O M T

Convert gray, rad, sievert, and rem

Absorbed dose (gray and rad) and equivalent dose (sievert and rem) use different SI families. Pick the dose type, enter an amount, and see conversions across common engineering units including milli- and micro- prefixes.

For general unit work, browse Unit Converter tools in the same category.

Frequently Asked Questions

Does this apply tissue weighting factors?

No. Equivalent dose conversions here are direct unit scaling (1 Sv = 100 rem). Apply ICRP weighting factors separately when needed.

Which unit is the base?

Absorbed dose normalizes to gray; equivalent dose normalizes to sievert.