How many sieverts are in one rem?

One rem equals 0.01 Sv. The formula is Sv = rem × 0.01.

How do I convert rems to sieverts?

Multiply the value in rems by 0.01. For example, 100 × 0.01 = 1 — so 100 rem = 1 Sv.

Pair · linear · factor 0.01

rems to sieverts

remSv

Active unit

rems · ≈ 1 Sv (base)

All units

1 result

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remrem100

How we calculated this

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Frequently asked questions

An emerald balance weighing a banana, an airplane silhouette and a CT head cross-section, laced with a grid of rays, against a cosmic nebula in violet and magenta

Equivalent dose

A banana, a flight, and a CT scan — why we need the sievert

A banana, a flight to New York, and a dental CT scan are all measured in the same unit — the microsievert. That is no accident. The sievert does not count the energy of radiation, but its real harm to living cells. Here is how one physicist turned subatomic collisions into a single, readable language of risk.

13 min