Frequency Wavelength Table: Wavelength (metres) by Frequency
Reference table of wavelength (metres) for Frequency Wavelength across a range of frequency values — exact, engine-computed figures you can read off at a glance.
Frequency Wavelength Calculator
Verified formula Updated Jun 2026 Private — runs on your device
Verified formula
Private
Wavelength (metres)
2.9979
- Period (microseconds)
- 0.010000
For general information only — not financial, tax, legal or medical advice. Verify before you rely on it.
How to use the Frequency Wavelength Calculator
The Frequency Wavelength Calculator works out your wavelength (metres), along with 1 related figure in an instant. Enter frequency and the result updates as you type — it is free, needs no sign-up, and runs entirely in your browser so your figures stay private.
- Enter the frequency.
- Read off your wavelength (metres), together with period (microseconds) — the calculator updates automatically, with no button to press.
Formula
The Frequency Wavelength Calculator uses the formula:
Wavelength (metres) = 299.792458 ÷ Frequency
Worked example
For example, with frequency of 100 MHz, the wavelength (metres) is 2.9979.
| Frequency | 100 MHz |
|---|
| Wavelength (metres) | 2.9979 |
|---|---|
| Period (microseconds) | 0.010000 |
Results are estimates for educational use, not professional advice.
Frequently asked questions
Divide the speed of light by the frequency. For electromagnetic waves, wavelength in metres equals 299.792458 ÷ frequency in MHz. So 100 MHz is about 3 metres.
The period is the time for one full cycle, equal to 1 ÷ frequency. At 100 MHz the period is 0.01 microseconds.
No. This uses the speed of light for electromagnetic waves like radio and light. Sound travels much slower, so use the speed of sound instead.
Because the wave speed is fixed, squeezing more cycles into each second makes each cycle shorter, so frequency and wavelength are inversely related.
The Frequency Wavelength Calculator uses the formula: Wavelength (metres) = 299.792458 ÷ Frequency. For example, with frequency of 100 MHz, the wavelength (metres) is 2.9979.
Enter the frequency. Read off your wavelength (metres), together with period (microseconds) — the calculator updates automatically, with no button to press.
Related guides
How to Calculate Frequency Wavelength: Formula, Steps & Examples
Learn how to calculate Frequency Wavelength — the formula explained step by step, with worked examples and a free calculator to check your answer.