Last Updated
：2025/12/08
rule of 72
Proper noun
Japanese Meaning
投資が倍になる期間（倍増期間）を概算するための計算式。利率（通常は年間利率）で72を割ることで、必要な期間を求める方法。 / 金融分野において、一定の金利で運用した場合に、元本が倍になるまでの期間をおおよそ見積もるための法則。72という定数を利用する。
（ canonical ）
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(finance) 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.
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rule of 72
Many investors rely on the rule of 72 when they want a quick estimate of how long it will take their money to double.
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Many investors rely on the rule of 72 when they want a quick estimate of how long it will take their money to double.
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