Best EMF Meters (2025): Measuring Electromagnetic Fields

EMF meters measure electromagnetic fields from electronics and wiring. Here’s what to buy if you’re concerned.

For all environment guides, see: Best Air Purifiers for Home.

What EMF Meters Measure

Type	Source	Unit
Magnetic fields (ELF)	Power lines, wiring, appliances	milliGauss (mG)
Electric fields (ELF)	Wiring, ungrounded electronics	V/m
Radio frequency (RF)	WiFi, cell phones, smart meters	μW/m²

Top EMF Meters

Product	Measures	Price (~)
Trifield TF2	All three types	$170
Cornet ED88T Plus	All three types	$180
Acoustimeter AM-10	RF only	$350
ERICKHILL EMF Meter	ELF only	$25

Trifield TF2 (~$170)

Most popular all-in-one meter:

What Levels Are Concerning?

Note: No regulatory consensus exists on safe levels. These are common guidelines:

Type	Building Biology Guidelines
Magnetic (mG)	<1 mG ideal, <3 mG acceptable
Electric (V/m)	<10 V/m ideal
RF (μW/m²)	<10 μW/m² ideal

Common EMF Sources

Magnetic Fields

• Power lines near home
• Electrical panel
• Running appliances
• Smart meters

RF/Microwave

• WiFi routers
• Cell phones
• Smart home devices
• Cell towers

Simple Mitigation

• Distance is key (inverse square law)
• Turn off WiFi at night
• Hard-wire computers when possible
• Keep phone away from body
• Move bed away from electrical panel

The Evidence Debate

Important context:

• No consensus on health effects at typical exposure levels
• Some studies suggest concerns; others find none
• Precautionary approach is reasonable but not mandated by science

Verdict

If curious about EMF: Trifield TF2 is the go-to all-purpose meter.

Budget option: ERICKHILL for basic magnetic field checking.

For RF concerns: Cornet ED88T Plus or dedicated RF meter.

For all environment guides, see: Best Air Purifiers for Home.