Compound Interest Calculator
Project how a deposit or investment grows when interest itself earns interest, with optional compounding frequency.
Estimates only — not professional financial, medical, legal or engineering advice. Read full disclaimer.
Result
Fill in the form and click Calculate to see your result here.
How it's calculated
A = P (1 + r/n)^(nt) for compounding n times per year, or the equivalent the handler implements for contributions.
Example
Example: Compound Interest Calculator
Inputs
- Principal: 10000
- Annual Rate: 8
- Time Years: 5
- Compounding Frequency: 1
Outputs
- Maturity Amount: 14693.28
- Interest Earned: 4693.28
This example uses typical sample values. Adjust the inputs above to see how the results change for your own numbers.
About this calculator
Compounding is why “12% for 10 years” is not 120% in a line. This calculator projects future value from principal, rate, years and compounding frequency so FD vs “keep in a drawer” is a picture, not a slogan.
Banks may use quarterly conventions that differ from a brochure’s annual headline. Tax on interest in Nepal can shrink the real number — this engine is pre-tax unless you already entered a net rate.