My router says it runs on the 2.4 GHz band. Is that 2,400 MHz, and how many hertz is that?

Yes — 2.4 GHz = 2,400 MHz = 2,400,000,000 Hz (2.4 billion hertz). GHz, MHz, and Hz all describe the same frequency at different scales. Most consumer specs use GHz to keep numbers readable; RF engineering often needs Hz for wavelength and antenna calculations.

I'm writing code that controls an oscillator and the library requires frequency in Hz. My datasheet shows 27 MHz — what value do I pass?

Pass 27,000,000. Multiply MHz by 1,000,000: 27 × 1,000,000 = 27,000,000 Hz. Watch for integer overflow if using a 16-bit integer type — use 32-bit or 64-bit for large Hz values.

AM radio stations are around 850 kHz but FM stations are around 96.5 MHz — why such different numbers if both are radio?

AM operates in the 540–1700 kHz range (0.54–1.7 MHz), while FM uses 87.5–108 MHz — about 100× higher. Higher frequency means shorter wavelength and better audio fidelity, which is why FM sounds cleaner. The different scale labels simply reflect which range is most convenient for each band.

A CPU is advertised as 3,600 MHz. Is that 3.6 GHz, and how many hertz is it?

Exactly right — 3,600 MHz = 3.6 GHz = 3,600,000,000 Hz. Modern processors oscillate 3.6 billion times per second. Manufacturers sometimes list speeds in MHz to make the number appear more impressive in marketing, but the underlying frequency is the same.

Hz to MHz Converter

Enter a value to instantly convert between frequency units.

From

Precision4 dp

1 Hertz = 0 Megahertz

Key Formulas

Hertz → Kilohertz

kHz = Hz × 0.001

Kilohertz → Hertz

Hz = kHz × 1000

Megahertz → Gigahertz

GHz = MHz × 0.001

Gigahertz → Megahertz

MHz = GHz × 1000

Formula

MHz = Hz ÷ 1,000,000

Signal processing formulas, microcontroller timer registers, and oscilloscope readings often give you raw cycle counts in Hz. FM radio stations, Wi-Fi channels, and RF component datasheets express those same frequencies as megahertz — one million times more compact. An FM station at 100,000,000 Hz is the same as 100 MHz. Dividing by 1,000,000 brings the number into the manageable range used in broadcast and wireless engineering.

Source: NIST SP 811, Table B.8

Last reviewed: 2026-06-11 · see our methodology

Frequently Asked Questions

Real-World Examples

FM radio at 100 MHz. A signal processing textbook problem asks students to express this broadcast frequency in Hz for use in a wave equation — the answer is 100,000,000 Hz.

100000000 Hz = 100 MHz

433 MHz ISM band used by garage door remotes and IoT sensors. Firmware that programs the RF module expects 433,000,000 Hz in a register while the module's datasheet lists '433 MHz'.

433000000 Hz = 433 MHz

NTSC colour subcarrier at 3.58 MHz. Electronics hobbyists restoring vintage televisions convert this to 3,580,000 Hz to program replacement oscillator chips.

3580000 Hz = 3.58 MHz

European mains power at 50 Hz. Expressed in MHz, this is 0.00005 MHz — illustrating how far below the radio spectrum AC power frequencies sit.

50 Hz = 0.00005 MHz

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Hz to MHz Converter

Key Formulas

Formula

Frequently Asked Questions

Real-World Examples

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