Tools · Cost Basis Tracker

Bitcoin cost basis,
tracked in your browser.

Log your purchases. See your weighted average cost basis, total BTC held, unrealized gain or loss, and break-even price. Your numbers stay on your device. Nothing is sent anywhere.

ADD A PURCHASE

Data stays in your browser via localStorage. Nothing is sent to any server.

TOTAL BTC
0
TOTAL INVESTED
$0
AVG COST BASIS
$0
PORTFOLIO VALUE
$0
GAIN/LOSS
$0
PURCHASE HISTORY
Date Spent Price BTC Value
What this tool assumes
  • Weighted average cost basis is used (vs. FIFO, LIFO, or specific-lot).
  • You may be able to specify lots for tax purposes; consult a CPA.

Not financial advice. Data stored in browser localStorage only.

Related

→ Bitcoin Taxes → Dollar-Cost Averaging → Tax-Loss Harvesting Calculator
HOW THIS IS CALCULATED

This tool runs entirely in your browser — no data is sent to any server. All formulas use standard financial math. Verify the methodology or inspect the source code in your browser's dev tools.