How Many Watts of Electricity does a Bench Grinder use?

Real power-use measurements from a bench grinder.

How Much Power does a Bench Grinder use

Bench Grinder: 510 Watts


  • A bench grinder uses an electric motor to spin two wheels with abrasive disks on them.
  • uses 76 watts when spinning in plain air, 510 watts when grinding

Power Use

  • Watts: 510
  • Kilowatts: 0.51 Kw.

Operation Cost

  • cost per minute: 10 hundredths of one cent (0.1 ¢)
  • cost per hour: 6.1¢
  • cost per day: 49¢
  • cost per month: $9.31

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Power use of these items was actually tested. Individual items will vary, but these are the actual measurements.