Department of Energy Argonne National Laboratory Office of Science NEWTON's Homepage NEWTON's Homepage
NEWTON, Ask A Scientist!
NEWTON Home Page NEWTON Teachers Visit Our Archives Ask A Question How To Ask A Question Question of the Week Our Expert Scientists Volunteer at NEWTON! Frequently Asked Questions Referencing NEWTON About NEWTON About Ask A Scientist Education At Argonne Rating Magnets
Name: Brian
Status: other
Age: 30s
Location: N/A
Country: N/A
Date: 1999 

Hello. I would like to know, for a project I am currently working on, how magnets are graded? Is there a numerical scale that magnets are rated to on strength?

The strength of a magnet is measured in Tesla or Gauss. Earth's magnetic field is around 0.5-1.0 Gauss. A Tesla is 10,000 Gauss. Very strong permanent magenets are in the 100 plus Gauss Range. The strongest dc magnetic fields are of the order of 35 Tesla- The strongest pulse fields using implosion techniques are greater than 100 Tesla.

Dr. Myron

Click here to return to the Physics Archives

NEWTON is an electronic community for Science, Math, and Computer Science K-12 Educators, sponsored and operated by Argonne National Laboratory's Educational Programs, Andrew Skipor, Ph.D., Head of Educational Programs.

For assistance with NEWTON contact a System Operator (, or at Argonne's Educational Programs

Educational Programs
Building 360
9700 S. Cass Ave.
Argonne, Illinois
60439-4845, USA
Update: June 2012
Weclome To Newton

Argonne National Laboratory