Rule of 72+ Calculator
Estimate how long it takes to double, triple, or 10x your money.
Inputs
Rule of 72 is most accurate for rates of 6-12%.
Exact math uses this frequency.
Presets:
Time to Reach Target
| Target | Rule (yrs) | Exact (yrs) | Δ |
|---|
Green = good estimate (|Δ| ≤ 0.5y); Amber = moderate; Red = large error.