Calculate Bitcoin profit, DCA returns, retirement projections and investment growth free, instant, no signup required.
DCA, profit, retirement, tax, mining, power-law and more — every tool free forever.
BTC price refreshes every 30 seconds. Historical daily closes back to 2013.
No signup, no email, no tracking. Calculations never leave your device.
Optimized math, lazy-loaded charts, instant results on any device.
Real-time calculations powered by live Bitcoin data.
A quiet, fast, ad-free room for Bitcoin math — built for the people who actually do the work.
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Professional Bitcoin analysis tools designed for smart investors and financial planners
See historical investment returns and analyze past performance with precision
Plan your Bitcoin retirement strategy with advanced projections
Dollar Cost Averaging strategy optimizer for consistent investing
Compare the outcome of investing a lump sum versus dollar-cost averaging over time
Estimate potential capital gains tax owed after selling Bitcoin investments
Calculate how long it will take to reach your Bitcoin accumulation goals
Long-term holding strategy analysis and portfolio growth tracking
Mining profitability and ROI analysis for hardware investments
Lightning Network fees and routing optimization for payments
Calculate your real Bitcoin profit or loss after exchange fees with multi-purchase cost basis tracking
Convert between BTC, satoshis, mBTC, and 100+ fiat currencies instantly with live prices
See how much your Bitcoin investment could be worth in 1-20 years with multiple growth scenarios
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