Lump Sum Calculator: One-time Investment Returns

See what a single investment could grow to over the years, and how many times your money multiplies.

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How to use the lump sum investment calculator

  1. Type your numbers in the boxes (pick your currency or units if asked).
  2. The answer updates as you type: no button to press.
  3. Copy the result, or share it on WhatsApp with one tap.

Questions

What is the rule of 72?

Divide 72 by the yearly return to estimate the years to double: at 12%, about 6 years.

Is my data private?

Yes. Everything happens inside your own browser: nothing you type or choose is uploaded to us or anyone else.

Is it free?

Completely free, with no sign-up, no watermark and no limit on how many times you use it. Light ads keep the site running.