Educational only, not medical advice. Health disclaimer.
If you’re comparing PEMF devices, you’ll run into a wall of numbers, Hz, Gauss, microtesla, “intensity levels.” Here’s what they actually mean, and which ones matter when you’re choosing a device.
Frequency (Hz): how fast the pulse
Frequency, measured in hertz (Hz), is how many magnetic pulses per second the device delivers. Research on pain and recovery typically uses low frequencies, roughly 1 to 100 Hz. A flexible device that covers a range of low frequencies can be used for more purposes. Some devices anchor around the “Schumann resonance” (~7.83 Hz), the Earth’s natural frequency.
Intensity (Gauss / microtesla): how strong the pulse
Intensity is the strength of the magnetic field, measured in Gauss or microtesla. Low-intensity devices (wellness mats) are gentle and designed for regular use; high-intensity systems (often clinical) deliver a stronger, more targeted pulse. Higher isn’t automatically better, it depends on the use.
Why this matters when you buy
A trustworthy device publishes its frequency and intensity specs. If a seller only talks about “healing energy” and won’t give you numbers, you can’t verify it’s operating at parameters with any research behind them, a major red flag covered in my PEMF mat buying guide.
The bottom line
You don’t need to be an engineer, but you do want a device that (a) publishes its parameters and (b) offers a low-Hz range with an intensity suited to your use. For specific picks, see the best PEMF devices guide, and for the science behind the pulses, how PEMF works.
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