# Tron energy calculator

See how much energy a USDT TRC-20 transfer needs, and what it costs to burn TRX for it instead of renting energy. The calculator is coming soon, free and with no signup.

- Free
- No signup
- No wallet, no private key
- **Energy needed** About 65,000 for a USDT transfer, about 130,000 to an address that has never held USDT.
- **TRX burned without energy** At the network's energy price of the day.
- **Bandwidth** The bytes the transaction takes, paid from bandwidth or TRX.

### Rent energy instead

Tron Energy, coming soon: rent energy before you send and pay less per transfer than burning TRX, with no TRX to lock.

```
curl -X POST https://rest.cryptoapis.io/
  prepare-transactions/evm/tron/mainnet/trc20-tokens \
  -H "X-API-Key: YOUR_API_KEY" \
  -d '{"data":{"item":{"sender":"TQn9…kEx",
      "recipient":"TXm4…a2P","amount":"250.00",
      "contract":"TR7NHqjeKQxGTCi8q8ZY4pL8otSzgjLj6t"}}}'
```

```
{
  "rawDataHex": "0a026afd…8e40",
  "transactionId": "4043bc60…c51d"
}
```

- **No wallet connection.** No signatures, no seed phrases. Only public blockchain data.
- **Read-only check.** We look up public blockchain data. Nothing is sent or stored on-chain.
- **Crypto APIs, Inc.** Delaware, USA. Building blockchain APIs since 2018.
- **ISO 27001 certified.** Independently audited information security.

## How do Tron energy and bandwidth work?

Tron has two resources. Bandwidth pays for the bytes of a transaction. Energy pays for running a smart contract, and a USDT transfer is a smart contract call. If an address has neither, Tron burns TRX from it to cover the fee.

- A USDT transfer uses about 65,000 energy
- Sending to an address that has never held USDT uses about twice as much
- Renting energy avoids both burning and locking TRX

### Energy, bandwidth, burned TRX: what pays for what?

| Resource | What it pays for | How you get it |
| --- | --- | --- |
| Energy | Running a smart contract, such as a USDT transfer. | Stake TRX, rent it, or burn TRX. |
| Bandwidth | The bytes of any transaction. | A small free daily allowance, staking, or burned TRX. |
| Burned TRX | Whatever energy or bandwidth the address lacks. | Taken from the sending address when it sends. |

## How will the calculator work?

### Enter the recipient

Paste the Tron address you are sending USDT to.

### We check the recipient

An address that has never held USDT needs about twice the energy.

### Read the cost

Energy needed, and the TRX you burn without it.

### Rent and save

Rent the energy with Tron Energy, coming soon.

## Send USDT on Tron for less

### Tron Energy

Rent energy before you send and cut TRC-20 transfer fees. Coming soon.

### USDT checker

Is the address you send to frozen or blacklisted by Tether?

### Tron API

Read balances and TRC-20 transfers, prepare and broadcast transactions. Live today.

## Tron energy questions

### How much energy does a USDT transfer on Tron need?

About 65,000 energy, and about 130,000 when the recipient has never held USDT.

### Why does sending USDT on Tron cost TRX?

A USDT transfer is a smart contract call, and it needs energy. If the sending address has no energy, Tron burns TRX from it to pay for the call.

### What is the difference between energy and bandwidth?

Bandwidth pays for the bytes of a transaction, and every address gets a small free daily allowance. Energy pays for running smart contracts, such as a USDT transfer.

### Is the Tron energy calculator free?

Yes. It will be free, with no signup. It is coming soon; request access and we will tell you when it is live.

### Can I rent Tron energy from Crypto APIs?

Soon. Tron Energy is coming soon: you will rent energy before you send, paid from your prepaid Crypto Balance, by API or in the dashboard.

### Can I send USDT on Tron through the API today?

Yes. Prepare the TRC-20 transfer with the Blockchain API, sign it on your own server, and broadcast it. We never hold your keys.

## The Tron energy calculator is coming soon

Free, with no signup. Request access and we will tell you when it is live.