Find out the true total cost of your hobby — and what that money could be worth if you'd invested it instead.
Hobbies enrich our lives — but they also have a real financial cost that's easy to underestimate when you're paying month by month. A $100/month hobby doesn't feel like much, but over 10 years that's $12,000 in cash, and potentially $19,000+ in lost investment growth.
We use compound interest to calculate what your hobby spending could have grown to if invested instead. Each month's spending is treated as a contribution to an investment account, compounded annually at your chosen return rate. The S&P 500 has historically returned around 10% per year before inflation.
Absolutely not. The point of this calculator isn't to make you feel guilty — it's to make the cost visible. Joy, stress relief, social connection, and personal growth are all real returns on investment that don't show up in a spreadsheet. Knowing the true cost helps you make intentional choices rather than spending on autopilot.
Golf, aviation, sailing, and car collecting regularly top lists of the most expensive hobbies, with enthusiasts spending tens of thousands per year. But even "cheap" hobbies like reading or gaming can add up to surprising totals over a decade of consistent spending.
Consider setting a monthly hobby budget and tracking it separately from other expenses. Some hobbyists find ways to offset costs — selling photography work, coaching others, or buying and reselling gear. The goal is to get maximum joy per dollar, not to minimize spending at all costs.