Megahertz to Hertz Converter
Common Conversions
| MHz | Hz |
|---|---|
| 0.1 | 100000 |
| 0.5 | 500000 |
| 1 | 1000000 |
| 2 | 2000000 |
| 5 | 5000000 |
| 10 | 10000000 |
| 25 | 25000000 |
| 50 | 50000000 |
| 100 | 100000000 |
| 1000 | 1000000000 |
Why this conversion matters in chemistry
NMR spectrometers are identified by their proton Larmor frequency in MHz — a 400 MHz instrument operates at 9.4 T, a 600 MHz one at 14.1 T. Probe-tuning, network-analyzer measurements, and chemical-shift offsets read in raw Hz. A 600.13 MHz proton frequency is 600,130,000 Hz on a tuning sweep. Multiplying by 10⁶ is the clean prefix step. The same conversion is what underlies the chemical-shift formula δ (ppm) = Δν (Hz) / ν₀ (MHz) — divide the offset in Hz by the spectrometer frequency in MHz to get the field-independent ppm scale.
Formula
Hz = MHz × 1000000
Worked Examples
400 MHz = 400000000 Hz
A standard high-field NMR proton frequency, expressed in raw Hz.
1 MHz = 1000000 Hz
The conversion anchor — one MHz equals exactly one million Hz.
600 MHz = 600000000 Hz
A high-field NMR spectrometer frequency, used for routine biomolecular work.
Frequently Asked Questions
How do I convert MHz to Hz?
Multiply by 1,000,000. The mega prefix is exactly 10⁶, so the conversion is a clean shift of six decimal places.
Why are NMR spectrometers rated in MHz?
The MHz rating is the proton Larmor frequency at the magnet's field strength. A 400 MHz spectrometer has a 9.4 T field; a 900 MHz instrument runs at 21.1 T. Higher MHz means stronger magnet, better resolution, and better signal relative to noise.
How do MHz relate to ppm?
Chemical shift in ppm equals offset frequency in Hz divided by spectrometer frequency in MHz. So on a 400 MHz instrument, a peak at 400 Hz from the reference signal sits at 1.0 ppm — the field-independent value chemists actually report.