Stock-to-Flow Calculator
Scarcity as a number: existing supply divided by annual new production. Gold sits near 60; Bitcoin passes it after halvings. The famous price model built on this is included as history, not gospel.
Results (live)
Estimates only, not financial advice. All math runs in your browser; nothing you type leaves this page.
How it works
S2F = circulating stock ÷ annual flow
Worked example
19.8M BTC against 164,250 new coins a year is an S2F of 120, meaning current issuance would need 120 years to recreate existing supply. The next halving doubles the ratio.
FAQ
Did the S2F price model work?
Its 2020-2021 predictions overshot badly and its creator's targets failed. The ratio is a real scarcity measure; the price regression drawn from it was curve-fitting.
How does Bitcoin compare to gold?
Gold's S2F is roughly 60 and stable. Bitcoin's doubles every four years by schedule, which is the asset's core monetary argument.
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Estimates only, not financial, tax or investment advice. Verify numbers against your exchange or a professional before acting.