The compound interest calculator solves time-value-of-money scenarios with optional inflation adjustment, periodic deposits, withdrawals, and varying compounding intervals. Enter initial balance, contribution amount, rate per period, number of periods, and inflation assumption to see future value, real versus nominal totals, stacked evolution charts, and a detailed ledger paginated at twenty rows.

Imagine starting with R$ 15,000, adding R$ 600 at the end of each month for 25 years at 0.75% monthly with 0.35% monthly inflation—the schedule shows how nominal balance grows while a real-value column reveals purchasing power after inflation erosion. Teachers can export the table logic into spreadsheets by copying formatted cells directly from the results panel.

Schedules cap at 9,999 periods to protect server performance; requests beyond that limit return a clear validation message. Charts aggregate long runs to five hundred points so browsers stay responsive on mobile networks. Inputs persist locally after a successful run, making it easy to tweak the rate by 0.1% and recalculate without retyping every field.