Investment Returns Calculator – UK Compound Growth Tool

Investing feels abstract until you can see what consistent contributions compound to over time. This calculator takes your starting amount, monthly contributions, expected annual return, and investment horizon, and projects the growth - including year-by-year breakdowns and the split between what you put in and what the market added.

It is built for anyone considering starting to invest, or who already invests and wants to model different scenarios: what happens if you increase your monthly amount by £50, or stay invested for five more years? The maths is straightforward and transparent, not hidden behind opaque assumptions.

The most common insight people take from this tool: starting earlier matters more than investing larger amounts. Time is the factor most people underestimate. For the next step, use the Cost of Investing Tool to compare UK platform fees, or the FIRE Calculator to see when your investments could make work optional.