₿CENTER FOR BITCOIN

TOOLS / TRANSPARENT BY DESIGN

Put assumptions
to work.

Explore arithmetic, compare hypothetical outcomes and export your inputs. No live prices, account connection or return forecast.

01 / SCENARIO BUILDER

Your inputs

Currency selection changes labels only. It does not convert exchange rates. A constant purchase price is assumed across all periods.

ILLUSTRATIVE RESULTS / NOT A FORECAST

Bitcoin accumulated—BTC after purchase fees
Total contributions—
Total purchase fees—
Value at comparison price—
Change vs contributions—

The calculation

Total contributions = contribution × periods.
Purchase fees = total contributions × fee ÷ 100.
BTC = (contributions − purchase fees) ÷ purchase price.
Comparison value = BTC × comparison price.
Change = comparison value − contributions.

Excludes spreads, network fees, selling fees, taxes, custody costs and price changes during purchases. Results are rounded for display; BTC spending is limited to whole satoshis and real execution can differ. Price may fall to zero. Fees and losses reduce capital.

02 / UNIT CONVERTER

BTC to satoshis.

1 BTC = 100,000,000 sats. This tool converts units, not currencies.

Satoshis100,000

Inputs accept up to 8 decimal places, from 0 to 21 million BTC. Calculated locally in your browser.