Megahertz to Hertz
Free instant megahertz to hertz converter. 1 MHz = 1000000 Hz.
Common Megahertz to Hertz values
| Megahertz (MHz) | Hertz (Hz) |
|---|---|
| 1 | 1000000 |
| 5 | 5000000 |
| 10 | 10000000 |
| 25 | 25000000 |
| 50 | 50000000 |
| 100 | 100000000 |
| 500 | 500000000 |
| 1000 | 1000000000 |
How does Megahertz to Hertz conversion work?
Type a value in the Megahertz (MHz) field and the equivalent in Hertz (Hz) appears instantly to the right. The math uses the exact formula shown above โ no rounding errors, no approximations beyond standard floating-point precision. Use the swap button to flip the units and see the inverse conversion.
Megahertz. One million hertz. FM radio (88-108 MHz), CPU clock speeds (decades ago), and television channels are in this range.
Hertz. The SI unit of frequency. 1 Hz = 1 cycle per second. Human-audible range: 20 Hz to 20 kHz.
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No submit button โ the result updates as you type. Math runs entirely in your browser, so itโs as fast as your device.
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Works in any modern browser โ Mac, Windows, Linux, iPhone, Android, tablets. No installation, no signup.
๐ฏ Accurate conversions
Conversion factors come from the official standard (NIST, BIPM, ISO definitions where applicable). Values are precise to standard floating-point limits.
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How it works โ the formula
1 Hz = 1 cycle / second
1 kHz = 10ยณ Hz
1 MHz = 10โถ Hz
1 GHz = 10โน Hz
1 BPM (beat per minute) = 1/60 HzThe hertz is the SI unit of frequency (cycles per second), named after Heinrich Hertz who demonstrated electromagnetic waves in 1888. SI decimal prefixes (k/M/G/T) apply directly. Beats per minute (BPM) is the music / cardiology unit: a 60 BPM heartbeat is exactly 1 Hz. RPM (revolutions per minute, used for rotating machinery) is the same factor 1 RPM = 1/60 Hz. The CGPM 1960 standardised the hertz as part of SI; before that "cycles per second" was the prevailing usage.
Worked examples
- Inputs:
- 120 BPM = ? Hz
- Output:
- 120 / 60 = 2 Hz
- Inputs:
- 2.4 GHz = ? Hz
- Output:
- 2.4 ร 10โน = 2,400,000,000 Hz
- Inputs:
- 72 BPM = ? Hz
- Output:
- 72 / 60 = 1.2 Hz
Limitations
- Angular frequency (ฯ, in rad/s) differs from cyclic frequency (f, in Hz) by a factor of 2ฯ โ physics formulas often use ฯ, but Hz is the everyday unit.
- BPM and RPM both = 1/60 Hz โ mathematically identical; the difference is convention (music/heart vs rotating machinery).
- Audio frequencies (20 Hz - 20 kHz) and radio frequencies (kHz to GHz) span 8 orders of magnitude โ be careful with prefix choice.
- Spectrum-allocation conventions sometimes use wavelength (1 m = 300 MHz, by c = ฮปf) instead of frequency.
Conversions are exact rational arithmetic โ all SI-prefix conversions are exact powers of 10, and BPMโHz is exactly 1/60.