Free Financial Calculators
Instant, accurate, and genuinely useful. No signup, no email — just real numbers.
Compound Interest
See how $10K grows at 7% over 20 years. Add monthly contributions. Year-by-year chart included.
Annual returnMonthly contributionsGrowth chartRule of 72
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50/30/20 Budget Calculator
Enter your income. Get an instant budget split with sub-categories, donut chart, and FIRE projection.
Custom percentagesDonut chartSub-categoriesFIRE timeline
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Debt Payoff Calculator
Add multiple debts. Compare Avalanche vs Snowball side-by-side. See your debt-free date and interest saved.
Multiple debtsAvalanche vs SnowballExtra paymentsPayoff order
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Savings Goal Calculator
How long to save $10K? Or: what do I need to save monthly? Two modes, instant results, HYSA rate built-in.
Two modesInterest rateProgress barSmart tips
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Retirement & FIRE Calculator
Your FIRE number, projected balance, monthly retirement income, and how much you need to save. Based on the Trinity Study 4% rule.
FIRE numberOn-track meterGrowth chartGap analysis
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