VOR & NDB Calculator 🛡️ 100% Client‑Side

Frequency · Channel · Wavelength · Interactive CDI Simulator

VOR Quick Reference

Frequency Range: 108.00 – 117.95 MHz

Channel Spacing: 50 kHz (0.05 MHz)

⚠️ Even/Odd Rule (108.00–111.95 MHz):
• Tenths digit even → VOR (e.g., 108.20)
• Tenths digit odd → ILS Localizer (e.g., 108.30)
112.00–117.95 MHz: All VOR.

VOR Channel: 17X – 59Y (paired with DME)

NDB Quick Reference

Frequency Range: 190 – 1750 kHz (LF/MF)

Wavelength (λ) formula: λ (m) = 300 / f (MHz)

Frequency Converter

MHz
Channel: 17X
Frequency: 113.00 MHz
kHz
Wavelength: 857.1 m / 2812 ft
Interactive VOR Simulator
TO · 30° Left

📘 VOR & NDB Navigation Explained

VOR (VHF Omnidirectional Range) and NDB (Non‑Directional Beacon) are ground‑based radio navigation aids. VOR provides 360 radials; the CDI shows deviation. This tool helps pilots and students convert frequencies, understand channel pairing, and practice CDI interpretation.

❓ Frequently Asked Questions

What is the difference between VOR and NDB?

VOR operates in VHF (108‑118 MHz) and provides precise radials. NDB uses LF/MF (190‑1750 kHz) and gives bearing to the station (ADF).

How do I read the CDI?

The CDI needle deflects left or right relative to the selected OBS radial. If the needle is centered, you are on that radial. TO/FROM indicates whether the selected radial points towards or away from the station.

Why are some VOR frequencies paired with DME channels?

VOR and DME are often co‑located. The channel pairing allows a single frequency selection to tune both VOR and DME.

Is my data private?

All calculations and the simulator run locally in your browser. No data is sent to any server.