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The Bitcoin calculator home

Precision tools for the 21 million.

From day-one newcomers to seasoned HODLers, Orange Abacus is the vertical home for every Bitcoin calculation that matters. Free, accurate, no signup.

Bitcoin is hard.
We make it simple.

Bitcoin is full of jargon. UTXOs, hash rates, sats-per-byte, basis points — most calculators assume you already speak the language. Most people don't.

We start from the opposite assumption. Plain words, visual results, formulas you can trust. Whether it's your first Bitcoin question or your hundredth, the answer arrives clearly.

Built on principles

Clarity

Plain English, always. No HODL, no FUD, no gatekeeping. If a concept is complex, we visualize it instead of hiding behind it.

Precision

Real Bitcoin price data. Mathematically sound formulas. Outputs verified against primary sources — never copied from a calculator that may already be wrong.

Trust

No accounts, no tracking, no analytics dark patterns. Every calculation runs in your browser. What you compute is yours alone.

The Abacus Story

The abacus is the oldest surviving calculation tool in history. It represents transparency — every movement of a bead is visible, every calculation is auditable.

Bitcoin is the modern abacus. A transparent ledger where every "bead" (satoshi) can be accounted for. We chose this symbol to remind our users that financial truth doesn't require complexity. It only requires the right tool to see it clearly.

3 Free calculators
100% Runs in your browser
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