Single logo
Quote Booster
  • For Professionals
  • For Homeowners
  • Calculators
  • Articles
  • Data Stories
Sign inSign Up

Rule of 72 Calculator

  1. Calculators
  3. Rule of 72 Calculator

Investment Details

%

Interest Rate (%)

Calculation Method

Rule of 72
Most commonly used due to its simplicity and being easily divisible. Works well for common interest rates and quick estimates.

Rule of 72 Equation
Time = 72 / r
Where r is the annual interest rate.
Calculator Link & Numbers Copied to Clipboard!
Calculator Link Copied to Clipboard!

2x Timeline

At 8% annual interest rate, your investment will double in approximately 9 years and 0 months. We've added a range of rates so you can easily compare.

Interest RateTime
6.0%12 years, 0 months
6.5%11 years, 1 months
7.0%10 years, 3 months
7.5%9 years, 7 months
8.0%9 years, 0 months
8.5%8 years, 6 months
9.0%8 years, 0 months
9.5%7 years, 7 months
10.0%7 years, 2 months

** Click to row to update interest rate.

Loading...

Single logo
Quote Booster

OUR MISSION:
Built for the life of the loan, the home, and the family.™

Website
PricingProduct DemoRefi Opportunities MissedTerms and ConditionsPrivacy policyDo Not Sell or Share My InfoService levelsDefinitionsOur Roadmap
For Professionals
Loan OfficersReal Estate AgentsMortgage LendingBanksCredit Unions
Company
About usContact usinfo@quotebooster.app
Follow Us
InstagramFacebookYouTubeX (Twitter)LinkedInReddit

2026 © All rights reserved.
Quote Booster ™ is owned by Zenith Repo, LLC.

Quote Booster, Zenith Repo, LLC is a marketing platform for mortgage professionals — not a lender, mortgage broker, or financial advisor. Rate data and comparisons may be sourced from third parties, are for informational purposes only, may be delayed, inaccurate, or incomplete, and do not constitute an offer or commitment to lend. Nothing here is binding or constitutes financial advice. Consult a licensed & qualified professional before making financial decisions.