SESKStuff Everyone Should Know
SESK: Stuff Everyone Should Know · sesk.info/wt-metric-units

Which system of measurement do almost all countries use for daily life?

Almost all countries use the metric system.

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  1. US customary units
  2. The metric system ✔
  3. Roman numerals

Why: Most of the world measures in meters, liters and grams. The United States has adopted the metric system too, but customary units like miles and pounds are still common there.

Huh, didn't know that: The United States was one of the original countries to sign the Treaty of the Meter in 1875.

The dad joke
Abroad, a mile is not a mile; it is a little over one and a half kilometers of walking.
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References

Answer: The metric system. Most of the world measures in meters, liters and grams. The United States has adopted the metric system too, but customary units like miles and pounds are still common there.

  1. Busting myths about the metric system (NIST) www.nist.gov/blogs/taking-measure/busting-myths-about-metric-system
    Because so much of the world uses metric only, more and more U.S. companies are recognizing the benefits of metric
    Checked 2026-10-12.

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