Convert Femtowebers to Flux quanta
Convert Femtowebers (fWb) to Flux quanta (Φ₀) instantly and accurately.
Conversion Formula
Φ₀ = fWb × 0.4835978485
About Femtowebers
The femtoweber (fWb) equals 10⁻¹⁵ Wb. Used in SQUID magnetometer research to express flux noise spectral density; a typical high-T₂ SQUID has white flux noise of a few µΦ₀/√Hz, corresponding to sub-fWb/√Hz levels. 1 fWb = 10⁻¹⁵ Wb.
About Flux quanta
The magnetic flux quantum (Φ₀ = h/2e) equals exactly 2.067833848×10⁻¹⁵ Wb (2019 SI definition). The natural unit of flux in superconductors - flux enters a type-II superconductor in integer multiples of Φ₀ (Abrikosov vortices). Used in SQUID, Josephson junction and quantum computing metrology. 1 Φ₀ ≈ 2.068 fWb.
Quick Reference Table
| Femtowebers (fWb) | Flux quanta (Φ₀) |
|---|---|
| 1 fWb | 0.483598 Φ₀ |
| 2 fWb | 0.967196 Φ₀ |
| 5 fWb | 2.41799 Φ₀ |
| 10 fWb | 4.83598 Φ₀ |
| 25 fWb | 12.0899 Φ₀ |
| 50 fWb | 24.1799 Φ₀ |
| 100 fWb | 48.3598 Φ₀ |