Free tools
Tron Energy Calculator
Estimate energy for TRON smart-contract calls with Tatum's managed estimateEnergy API. No API key required in the browser.
- Live TRX/USD burn-cost estimate after each call
- ABI helper for common TRC20 selectors
- No API key in the browser; rate-limited server proxy
Estimated energy
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If burned as TRX
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≈ USD
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Run an estimate on the right to see energy and burn cost here.
Estimate a call
Fill the call details, encode params if needed, then estimate.
Token
Function
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Frequently asked questions
- What does the Tron Energy Calculator do?
- It estimates energy for TRON smart-contract calls via Tatum's wallet/estimateEnergy endpoint. Calls go through Tatum's server proxy; nothing is submitted on-chain.
- Do I need my own Tatum API key?
- No. This tool uses a server-side demo key with origin checks and rate limits. Cloudflare Turnstile can be enabled later by an engineer (opt-in env flag + keys). For production apps or higher volume, create a free key in the Tatum Dashboard.
- How is the USD burn cost calculated?
- Energy x network energy fee (sun) / 1,000,000 gives TRX burn if you have no available energy. That TRX amount is multiplied by the live TRX/USD rate from Tatum. Staked or delegated energy can reduce or eliminate the burn.
- What does CONTRACT_EXE_ERROR: REVERT mean?
- The simulated call would fail on-chain (bad params, insufficient balance/allowance, etc.). Fix inputs or check balance/allowance, then estimate again. The calculator error panel expands on the usual causes.
- Why does it say my parameters length is wrong?
- Each ABI argument is a 32-byte word (64 hex characters). The hex must match the function’s argument count—e.g. transfer(address,uint256) needs exactly 128 hex chars. Clear the box, fill the helper fields, and use Encode parameters.
- How should amounts be entered?
- Use smallest token units. USDT uses 6 decimals, so 1 USDT = 1,000,000. Encoding follows Solidity ABI rules compatible with TRON contracts.