Keccak256 Selector Calldata Size Estimator
Free interactive Keccak256 Selector Calldata Size Estimator: Calldata gas = 16/non-zero byte + 4/zero byte; selector = 4 bytes.
Result
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Token price
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Input A +10%
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Input A −10%
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Scenario table
| Args (32-byte) | Result (gas) |
|---|
Formula & Methodology
Calldata gas = 16/non-zero byte + 4/zero byte; selector = 4 bytes.
(4+a*32-b)*16+b*4
Worked Example
With Args (32-byte) = 3, Zero bytes = 40, Gas price (gwei) = 20, the result is 1,120 gas.
FAQ
What does the Keccak256 Selector Calldata Size Estimator calculate?
Calldata gas = 16/non-zero byte + 4/zero byte; selector = 4 bytes.
Which inputs does the Keccak256 Selector Calldata Size Estimator need?
Args (32-byte), Zero bytes, Gas price (gwei). Pick a token to prefill live price context.
How accurate is the Keccak256 Selector Calldata Size Estimator?
It applies a deterministic formula to your inputs; real outcomes vary with fees, slippage, taxes and market moves.
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For informational and educational purposes only. Not financial, investment, tax or legal advice. Calculations are estimates; verify with a qualified professional.