Calculator

Compound Interest Calculator

Project growth of a lump sum with regular monthly contributions.

Enter your numbers

Initial amount (₦)

The lump sum you start with.

Monthly contribution (₦)

Added at the end of each period.

Annual interest rate (%)

Educational estimate — real returns are never guaranteed.

Duration (years)

Compounds per year

12 = monthly, 4 = quarterly, 1 = annually.

Results appear here once you calculate. All maths runs on this server using only the numbers you provide.