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$100,000 invested for 5 years at 5%
Exact compound math for the given inputs.
$128,335.87
future value (monthly compounding, no deposits)
Principal$100,000.00
Interest earned$28,335.87
Growth multiple1.28×
Rule of 7214.4 yrs to double
Frequently asked questions
How much will $100,000 be worth in 5 years at 5%?
With monthly compounding it grows to $128,335.87 — that is $28,335.87 of interest earned on $100,000.00.
What if compounding is annual instead of monthly?
Annual compounding gives $127,628.16 — more frequent compounding always yields slightly more.
How long until it doubles?
The Rule of 72 estimates 14.4 years at 5% (14.40 precisely).
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Change the numbers yourself
Open the interactive compound interest calculator — every field is editable.