Compound Growth Calculator

See what small, consistent investing looks like over time — and why starting matters more than the amount.

Groundwork Press · When Money Feels Impossible
A note before you begin: This calculator is for illustration only — to show the principle of compounding growth. It is not investment advice. Real investment returns vary and are not guaranteed. Before investing, consider speaking with a regulated financial adviser.

Your investment details

£
Start with what feels genuinely manageable — even a small amount shows the principle
% per year
The long-term average for a globally diversified index fund has historically been around 7–8% annually, before inflation. This is illustrative — past performance does not guarantee future returns.
20 years
1 year 40 years

The compound effect over time

Final value
after years
Growth
returns on top of contributions
You put in
your total contributions
Money made money
of final value from growth
Total value   Your contributions