WORLD CRYPTOCURRENCY GUIDE

Practical tools for understanding crypto operations

Choose the tool that fits your question. Calculations use your assumptions in the browser, without live quotes or wallet connections. Each tool stays alongside its guide, formulas and limits.

Overall operation cost

Enter amount, network fee, service fee and spread. Compare total cost, net amount and fee proportion using consistent currencies.

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Ethereum fees: estimate and cap

Compare used gas, gas limit and maximum price. The authorized cap is not the bill; read the formula and L2 exclusions.

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Minimum swap output

Use a quoted quantity and tolerance to calculate a theoretical minimum. This is neither an executable quote nor protection against every risk.

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Prepare a transfer

Compare added and deducted fees, then review six operational checks. The tool does not automatically verify networks or addresses.

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DeFi borrowing stress

Vary collateral and debt values with an assumed threshold. This simplified model shows a changing ratio, not a liquidation probability.

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Bitcoin payment, fee and change

Use input satoshis, payment, virtual size and an assumed rate to distinguish fee and remainder. The calculation selects no UTXOs and validates no transaction.

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Use a result within its scope

  1. Choose consistent units and values. Separate known data, assumptions and missing information.
  2. Change one assumption at a time, then combine changes. Compare results instead of relying only on the initial value.
  3. Check the actual network, quote or market before acting. Variable fees and service-specific rules are not all represented.

16 worksheets to document a decision

Open a worksheet, record references and uncertainties, then export notes. Its three checks are specific to the topic; completing them is not a guarantee.