Compound Interest Calculator

See how much a lump sum grows with annual, half-yearly, quarterly or monthly compounding.

How it works

  • The formula is A = P(1 + r/n)^(nt), where n is the number of times interest is compounded per year.
  • Monthly compounding earns slightly more than annual compounding at the same nominal rate.
  • Year-by-year figures help you see how the growth accelerates over time.