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Unit conversions with NIST factors

ASP written lesson, 12 min read. ASP Domain 1: Mathematical Calculations

AI-drafted from the cited rules and fact-checked against them. Study aid, not site-specific safety advice. The official rule controls.

What you'll learn

  • State the NIST factors for feet, inches, U.S. gallons and pounds
  • Read NIST "E" notation and place the decimal correctly
  • Convert length, volume and mass between U.S. and metric units
  • Convert degrees Fahrenheit to degrees Celsius with the NIST formula
  • Sanity-check an answer by asking whether it should grow or shrink

What this lesson covers

This lesson covers the four NIST factors for length, volume and mass, how to read the scientific notation NIST prints them in, and the separate formula for temperature. Unit-conversion slips (wrong direction, misplaced decimal, skipped 32) are easy to make and easy to catch with a sanity check.

This lesson is included with a pass

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Try the free unit conversions practice questions

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