Compound Growth Calculator

About this calculator

Compound growth describes how a value increases when each period's growth is calculated on the new, already-grown total rather than the original starting amount — the classic formula is FV = PV × (1 + r)^n, where PV is the starting value, r is the periodic growth rate and n is the number of periods. Because each period's gain becomes part of the base for the next period, compound growth accelerates over time, unlike simple (linear) growth which adds a fixed amount every period.

This calculator projects how a value compounds over time at a fixed rate, whether that's an investment portfolio, a business metric like user count or revenue, a population, or any other quantity growing by a consistent percentage each period. Investors use it to project savings and portfolio growth, business analysts use it to forecast recurring revenue or user growth, and it's the same math behind the "rule of 72" shortcut for estimating doubling time.