Convert Femtoteslas to Gammas
Convert Femtoteslas (fT) to Gammas (γ) instantly and accurately.
Conversion Formula
γ = fT × 1.000000000e-6
About Femtoteslas
The femtotesla (fT) equals 10⁻¹⁵ T. The standard field scale for biomagnetic measurements: neural signals in magnetoencephalography (MEG) produce cortical fields of 10-1000 fT, while cardiac magnetic fields (magnetocardiography, MCG) are around 10-100 pT. SQUID sensors routinely measure in the fT range. 1 fT = 10⁻¹⁵ T.
About Gammas
The gamma (γ) equals exactly 1 nT = 10⁻⁹ T. A legacy CGS-adjacent unit adopted in geophysics and aeromagnetic surveying before SI. Total-field aeromagnetic surveys measure local anomalies of a few γ to thousands of γ over mineral deposits. 1 γ = 1 nT = 10⁻⁹ T.
Quick Reference Table
| Femtoteslas (fT) | Gammas (γ) |
|---|---|
| 1 fT | 1 × 10-6 γ |
| 2 fT | 2 × 10-6 γ |
| 5 fT | 5 × 10-6 γ |
| 10 fT | 1 × 10-5 γ |
| 25 fT | 2.5 × 10-5 γ |
| 50 fT | 5 × 10-5 γ |
| 100 fT | 1 × 10-4 γ |