Word.ws English Dictionary

rule of 72

rule of 72 proper noun: a means of estimating an investment's doubling time. 72 is divided by the interest percentage per period (usually years) to obtain the approximate number of periods required for doubling.

Proper noun

the rule of 72

  1. A means of estimating an investment's doubling time. 72 is divided by the interest percentage per period (usually years) to obtain the approximate number of periods required for doubling.

Questions about rule of 72

What does rule of 72 mean?
Rule of 72 means a means of estimating an investment's doubling time. 72 is divided by the interest percentage per period (usually years) to obtain the approximate number of periods required for doubling.
What part of speech is rule of 72?
Rule of 72 is a proper noun.

Words near rule of 72 in the dictionary

  1. rule followers
  2. rule in
  3. rule joint
  4. rule joints
  5. rule nisi
  6. rule of 72
  7. rule of Colel
  8. rule of cool
  9. rule of coss
  10. rule of decision
  11. rule of engagement

Source and license

Adapted from Wiktionary: rule of 72 (page history and authors). Text available under the Creative Commons Attribution-ShareAlike 4.0 license. Word.ws reformatted the entry and added links. Wiktionary data of 2026-09-02.

Last updated:

Cite this entry: “rule of 72.” Word.ws, https://word.ws/rule_of_72. Based on Wiktionary, CC BY-SA 4.0.