Convert Sieverts to Femtosieverts

Convert Sieverts (Sv) to Femtosieverts (fSv) instantly and accurately.

Sieverts (Sv)
Femtosieverts (fSv)

Conversion Formula

fSv = Sv × 1000000000000000

About Sieverts

The sievert (Sv) is the SI coherent unit of equivalent and effective dose, equal to 1 J/kg of absorbed dose weighted by radiation type. Named after Rolf Sievert (Swedish radiophysicist, 1896-1966). Whole-body LD50 for acute exposure ~3-5 Sv; ICRP emergency responder limit 0.25 Sv; acute radiation syndrome threshold ~1 Sv. 1 Sv = 100 rem = 1 J/kg.

About Femtosieverts

The femtosievert (fSv) equals 10⁻¹⁵ Sv. Used in computational nanodosimetry and Monte Carlo particle-transport simulations to characterise the equivalent dose from a single ion traversal through a DNA segment or cell organelle. Ultra-sensitive detector calibration in deep underground laboratories approaches the fSv level. 1 fSv = 10⁻¹⁵ Sv = 10⁻³ pSv.

Quick Reference Table

Sieverts (Sv)Femtosieverts (fSv)
1 Sv1 × 1015 fSv
2 Sv2 × 1015 fSv
5 Sv5 × 1015 fSv
10 Sv1 × 1016 fSv
25 Sv2.5 × 1016 fSv
50 Sv5 × 1016 fSv
100 Sv1 × 1017 fSv

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