# Fee estimation

## Definition

Fee estimation is the process of predicting a network fee or fee rate likely to achieve a desired transaction inclusion speed under current conditions.

## What it means in practice

Bitcoin estimation considers mempool competition and transaction size; Ethereum-style estimation considers gas usage and current fee-market parameters.

## How this concept appears in Terenval Wallet

Terenval fee displays are estimates based on network conditions and transaction characteristics rather than guaranteed prices or confirmation times.

**Important:** Network conditions can change after signing, so an estimate can become stale.

**[Install Terenval Wallet](https://wallet.terenval.com/?lang=en)**

## Related terms

- [Network fee](https://wallet.terenval.com/glossary/network-fee/)
- [Bitcoin fee rate](https://wallet.terenval.com/glossary/bitcoin-fee-rate/)
- [Gas price](https://wallet.terenval.com/glossary/gas-price/)
- [Confirmation time](https://wallet.terenval.com/glossary/confirmation-time/)
- [Pending transaction](https://wallet.terenval.com/glossary/pending-transaction/)

## Related Terenval Answers

- [How to Send Crypto Safely Between Wallets](https://wallet.terenval.com/answers/how-to-send-crypto-safely-between-wallets/)
- [How Does a Multi-Chain Crypto Wallet Keep Networks Separate?](https://wallet.terenval.com/answers/how-multi-chain-wallets-keep-networks-separate/)
- [Ethereum Layer 2 Networks and Gas Fees](https://wallet.terenval.com/answers/ethereum-layer-2-networks-and-gas-fees/)

## Sources

- https://developer.bitcoin.org/devguide/
- https://ethereum.org/en/developers/docs/transactions/
- https://wallet.terenval.com/info/security/

Official page: https://wallet.terenval.com/glossary/fee-estimation/