Fidamen

Convert USD to BTC – Currency Converter

This converter turns an amount in United States dollars (USD) into Bitcoin (BTC) using the prevailing market spot price. It is intended for quick reference, accounting estimates, and planning — it does not execute trades or include platform or network fees.

Results show the theoretical BTC amount based on the selected spot price. For on‑chain transfers, wallet minimums and the network fee (miner/validator fee) affect the final received amount. For exchange purchases, platform spreads and transaction fees will alter the executed price.

Use the tool to estimate holdings, prepare reports, or check approximate value before initiating a transfer or trade. This tool is informational and not financial or tax advice; consult a licensed professional for decisions.

Updated Nov 11, 2025QA PASS — golden 25 / edge 120Run golden-edge-2026-01-23

Governance

Record fe105fe32a6c • Reviewed by Fidamen Standards Committee

Interactive Converter

Convert between us dollar and bitcoin with precision rounding.

Quick reference table

US DollarBitcoin
$1.00BTC 0.00002353
$5.00BTC 0.00011765
$10.00BTC 0.00023529
$25.00BTC 0.00058824
$50.00BTC 0.00117647
$100.00BTC 0.00235294

Methodology

We use a single spot price expressed as USD per BTC to perform the conversion. The spot price should be sourced from a reliable market feed or an aggregation of multiple liquidity providers to approximate the mid‑market rate.

Conversion is performed by dividing the USD amount by the spot price (USD per BTC) to yield BTC. When displaying the result, BTC is formatted with up to 8 decimal places to reflect satoshi precision (1 BTC = 100,000,000 satoshis).

Displayed values do not include exchange spreads, custody or trading fees, nor blockchain network fees. Where relevant, the tool indicates minimum transferable units (one satoshi) and recommends rounding rules to avoid presenting amounts smaller than the smallest Bitcoin unit.

For compliance and recordkeeping, users should retain timestamps and the referenced spot price used for a conversion. Government guidance classifies virtual currency transactions for tax and reporting — consult official guidance for obligations.

Worked examples

Example 1 — If SpotPrice = 50,000 USD/BTC and you enter 100 USD, BTC = 100 ÷ 50,000 = 0.00200000 BTC (200,000 satoshis).

Example 2 — If SpotPrice = 27,500 USD/BTC and you enter 1, USD, BTC = 1 ÷ 27,500 = 0.00003636 BTC (3,636 satoshis).

F.A.Q.

Where does the spot price come from and how often does it update?

The spot price should come from an aggregated market feed or a single trusted liquidity provider; frequency depends on the feed (many update in real time or every few seconds). For formal recordkeeping, capture the timestamp and the source of the spot price used in the conversion.

Does the converter include exchange fees, spreads, or blockchain network fees?

No. The converter returns the theoretical BTC amount using the spot price only. Actual executed amounts will differ because of exchange spreads, trading fees, custody fees, and blockchain network fees. Account for those separately when planning transfers or purchases.

What precision do you use and why?

Bitcoin is divisible to 8 decimal places (one satoshi = 0.00000001 BTC). The converter displays up to 8 decimal places and shows the corresponding satoshi count so users understand the smallest transferable unit and avoid rounding surprises.

Why might a small USD amount show as 0.00000000 BTC?

If the USD amount converts to less than one satoshi given the current spot price, the BTC display will round to 0.00000000 BTC. In such cases the converter can display the equivalent satoshi fraction or advise increasing the amount to reach one satoshi.

Is this tool executing a trade or moving funds?

No. This is a reference calculator only. To buy, sell, or transfer Bitcoin you must use a custodial or non‑custodial wallet or an exchange service and accept their fees, limits, and compliance procedures.

Are there regulatory or tax considerations I should know?

Yes. In many jurisdictions, converting fiat to cryptocurrency is a taxable event and subject to reporting and anti‑money laundering rules. Retain conversion timestamps and the spot price used for accurate records and consult official government guidance or a tax professional.

What is the minimum transferable amount of Bitcoin?

The smallest on‑chain unit is one satoshi (0.00000001 BTC). Some wallets or services may enforce higher minimums due to fee economics or service policies.

Sources & citations

Further resources

Versioning & Change Control

Audit record (versions, QA runs, reviewer sign-off, and evidence).

Record ID: fe105fe32a6c

What changed (latest)

v1.0.0 • 2025-11-11 • MINOR

Initial publication and governance baseline.

Why: Published with reviewed formulas, unit definitions, and UX controls.

Public QA status

PASS — golden 25 + edge 120

Last run: 2026-01-23 • Run: golden-edge-2026-01-23

Engine

v1.0.0

Data

Baseline (no external datasets)

Content

v1.0.0

UI

v1.0.0

Governance

Last updated: Nov 11, 2025

Reviewed by: Fidamen Standards Committee (Review board)

Credentials: Internal QA

Risk level: low

Reviewer profile (entity)

Fidamen Standards Committee

Review board

Internal QA

Entity ID: https://fidamen.com/reviewers/fidamen-standards-committee#person

Semantic versioning

  • MAJOR: Calculation outputs can change for the same inputs (formula, rounding policy, assumptions).
  • MINOR: New features or fields that do not change existing outputs for the same inputs.
  • PATCH: Bug fixes, copy edits, or accessibility changes that do not change intended outputs except for previously incorrect cases.

Review protocol

  • Verify formulas and unit definitions against primary standards or datasets.
  • Run golden-case regression suite and edge-case suite.
  • Record reviewer sign-off with credentials and scope.
  • Document assumptions, limitations, and jurisdiction applicability.

Assumptions & limitations

  • Uses exact unit definitions from the Fidamen conversion library.
  • Internal calculations use double precision; display rounding follows the unit's configured decimal places.
  • Not a substitute for calibrated instruments in regulated contexts.
  • Jurisdiction-specific rules may require official guidance.

Change log

v1.0.0 • 2025-11-11 • MINOR

Initial publication and governance baseline.

Why: Published with reviewed formulas, unit definitions, and UX controls.

Areas: engine, content, ui • Reviewer: Fidamen Standards Committee • Entry ID: 6e527f797560