20m

20m is a compact notation that appears in several technical and everyday contexts. In the metric system it commonly denotes a length of twenty metres, which is often used to specify distances in engineering drawings, athletic tracks, athletic throws, and in the construction industry. The abbreviation is consistent with the International System of Units, in which the metre (m) is the base unit of length. Consequently, 20m can appear in measurements of civil engineering structures, the specification of aviation runway lengths, and the labeling of sound propagation distances in acoustics studies.

The same two‑letter combination is also frequently read as “twenty million” in finance, statistics, and media reports. Here the “m” serves as a suffix to a numeric value, indicating a factor of one million. It frequently appears in stock market summaries, government budget documents, population estimates, and corporate revenue figures, where brevity is favored in data tables and executive summaries.

In radio communications, 20m refers to the 20‑meter band, a frequency allocation in the Very High Frequency (VHF) range used by amateur radio operators worldwide. The band spans from 14.000 to 14.350 MHz and is valued for its reliable skywave propagation during nighttime hours. Operators use 20m for both local and long‑distance contacts, and the band’s characteristics are governed by the International Telecommunication Union’s radio regulations.

Collectively, the term “20m” thus bridges physical distance measurement, large‑scale numeric expression, and specialized frequency naming, illustrating the flexibility of SI notation and abbreviations across domains.