Dipole Antenna Length
Calculate full-wave, half-wave, and quarter-wave dipole lengths from frequency and velocity factor.
| Antenna | Meters | Feet |
|---|---|---|
| Full-wave (λ) | 1.9507 m | 6.3999 ft |
| Half-wave (λ/2) | 0.97535 m | 3.2 ft |
| Quarter-wave (λ/4) | 0.48768 m | 1.6 ft |
L = (c × VF) / f — where c = 299,792,458 m/s
Classic feet formula: L_half ≈ (468 / f_MHz) × VF ft
Half-wave ≈ 3.0452 ft (classic approx)