Frequency ↔ Wavelength 🛡️ 100% Client‑Side

Real‑time · Smart units · Ham bands
Ham Radio Band Reference (click to fill)
BandFrequencyWavelengthUse

📘 Frequency & Wavelength Explained

Frequency (f) and wavelength (λ) are inversely related: λ = c / f, where c ≈ 299,792,458 m/s (speed of light in vacuum). This tool provides real‑time conversion with a visual scale to help you intuitively grasp the size of a wave. The ham radio band chart offers quick reference for popular amateur frequencies.

❓ Frequently Asked Questions

What is the formula for wavelength?

Wavelength (λ) = speed of light (c) / frequency (f). For radio waves in vacuum/air, c ≈ 3×10⁸ m/s.

How do I convert MHz to meters?

Use λ(m) = 300 / f(MHz). For example, 100 MHz corresponds to 3 meters. This calculator does it automatically.

What are the common ham radio bands?

Popular bands include 160m (1.8‑2.0 MHz), 80m (3.5‑4.0), 40m (7.0‑7.3), 20m (14.0‑14.35), 15m (21.0‑21.45), 10m (28.0‑29.7), 2m (144‑148), 70cm (430‑450).

Why does the visual scale have reference objects?

To give a sense of scale. For example, a 100 MHz wave is about 3 meters long — roughly the length of a car.