Working Capital Calculator
Enter current assets, liabilities, and monthly expenses to see your working capital, current ratio, and cash runway in seconds.
Assets & Liabilities
Liquidity Gauge
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Tax Extension Calculator
Filed Form 4868? An extension delays your filing deadline — not your payment. Calculate your April 15 balance due, 0.5%/month failure-to-pay penalty, daily IRS interest, and total cost of waiting until October 15.
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Inflation Calculator
Find out what any dollar amount is worth across time — past or future. Powered by CPI data from 1913–2024 with actual historical rates. See how inflation erodes purchasing power and what you need to earn to keep up.
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FBA Product Research Scorer
Score Amazon FBA product opportunities across profitability, demand, and competition. Enter BSR, COGS, referral fee category, FBA size tier, and competing seller count — get net profit, ROI, monthly profit, and an overall Hot/Good/Maybe/Skip verdict.
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You might also like
Tax Extension Calculator
Filed Form 4868? An extension delays your filing deadline — not your payment. Calculate your April 15 balance due, 0.5%/month failure-to-pay penalty, daily IRS interest, and total cost of waiting until October 15.
Try it →
Inflation Calculator
Find out what any dollar amount is worth across time — past or future. Powered by CPI data from 1913–2024 with actual historical rates. See how inflation erodes purchasing power and what you need to earn to keep up.
Try it →
FBA Product Research Scorer
Score Amazon FBA product opportunities across profitability, demand, and competition. Enter BSR, COGS, referral fee category, FBA size tier, and competing seller count — get net profit, ROI, monthly profit, and an overall Hot/Good/Maybe/Skip verdict.
Try it →