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Transaction Failure Diagnoser

Pick what you saw and this narrows it down to the likely cause and the actual fix.

What were you doing?

What happened?

Do you hold the chain's native coin?

Likely cause

What to do

Runs entirely in your browser. Nothing you type is sent anywhere.

Why a failed transaction still costs gas

Validators performed the computation before the contract rejected the result. The work happened, so it is paid for. That is by design.

The network performed the work before the contract rejected the outcome. Gas pays for computation, not for success.

Size a crypto position from your risk percentage and stop distance.

Find the exact price that wipes out a leveraged position.

See what providing liquidity really costs when prices diverge.

Profit, loss and return on any crypto position after fees.

Project what a regular buying plan builds over time.

Convert gwei and gas units into what a transaction actually costs.

Risk warning: crypto is highly volatile and largely unregulated. This is an information tool, not financial advice.