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Dipole Antenna Calculator
Calculate the total and each leg length of a half-wave dipole antenna.
Frequency (MHz)
Antenna Geometry
Horizontal Dipole
Inverted-V
Wave Type
Full-wave (1λ)
Half-wave (1/2λ)
Quarter-wave (1/4λ)
Eighth-wave (1/8λ)
Velocity Factor
Bare wire in free space (0.95)
Insulated wire (0.90)
Coax dipole (0.85)
Custom VF...
Custom Velocity Factor (0.05–1.0)
Unit
Meters
Feet
Inches
Calculate
Total Length (L):
Each Leg (L/2):
Formula: L = 492 / f(MHz) × VF (feet) or L = 150 / f(MHz) × VF (meters)