A narrow simple case is useful without being a universal transfer estimate.
LET’S PICTURE IT
A basic postage example teaches arithmetic, while heavier parcels need different resource calculations.
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Calculate and split a manual execution feeStep 1 / 4
This example supplies twenty-one thousand gas used. It is a simple teaching input, not a live estimate of a contract call.
This example supplies twenty-one thousand gas used. It is a simple teaching input, not a live estimate of a contract call.With base ten Gwei, priority cap two and total cap twenty, the effective rate is twelve Gwei per gas.Twenty-one thousand times twelve Gwei gives two hundred fifty-two thousand Gwei, or 0.000252 ETH.The base-fee component is 0.00021 ETH and is burned. The priority component is 0.000042 ETH for the block fee recipient.
Animated local teaching model. No wallet, RPC or live blockchain data. Some labels and hashes are abbreviated for readability.
Define the simple case
A plain native transfer to an ordinary code-free account, with no extra data or special transaction features, is the familiar 21,000 gas example. Its usefulness comes from keeping the assumptions explicit.
Changing the action can change the cost
A token transfer invokes contract code rather than merely moving the native value field. Sending to an account with executable behavior or adding input data can also change the work required.
The price is still separate
At 10 Gwei per gas, 21,000 gas corresponds to 0.00021 ETH in execution fees. At 20 Gwei it corresponds to 0.00042 ETH. The resource amount stayed fixed while the price doubled.
Do not reuse it blindly
A calculator using manual gas input does not estimate an arbitrary contract. Use the example to learn units, then obtain appropriate execution evidence for a real request instead of assuming every send costs 21,000 gas.