Free financial calculators

Free financial calculators. Your numbers stay private.

Understand changes in your net worth and explore what recurring subscriptions could cost over time. Free to use, with no account required.

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Net Worth Attribution Calculator

See what moves your net worth each month.

Break monthly changes into savings, market returns, and spending. Illustrative preview below; full model runs in your browser.

Illustrative example — $8k/mo in, $5k/mo out, 7% return, 5 years

Base $150kSavings $180kMarket $97k≈$427k

Savings is net of spending: $480k earned − $300k spent = $180k saved.

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Analyze net worth changes How this calculation works

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Subscription Cost Calculator

Explore savings and investment opportunity cost.

See what monthly subscriptions could cost over 5–10 years, including illustrative investment growth. Clearly labeled projection below.

Illustrative example — $140/mo at a hypothetical 7% return, 10 years

Paid out $16,800If invested ≈$24,232

About $7,432 of the projection is investment growth — hypothetical, not guaranteed.

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Estimate subscription costs How this calculation works

Private by design

What you type into these calculators stays in your browser — it is never sent to our servers. Page visits themselves follow our standard privacy and cookie policies. Projections are educational estimates, not financial advice.

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