I built a free compound interest calculator for UK investors, here is what it does

After struggling to find a decent compound interest calculator built specifically for UK users, I decided to build one myself.

What it does:

• Shows exactly how your money grows year by year
• Handles monthly contributions on top of a lump sum
• Adjusts for inflation so you see real purchasing power
• Built around UK ISA allowances and investment context
• Gives you personalised insights based on your numbers
• Completely free, no signup, no email required

A few examples of what you can model:

• Investing £200 a month for 30 years at 7% grows to £164,877
• Adding just £50 more a month makes a bigger difference than most people realise
• Starting 5 years earlier can be worth more than doubling your contributions

Try it here: compoundwise.co.uk

I am actively building it out and would genuinely love feedback. What features would make it more useful for you? Drop a comment below.