What is Gas Fees?

What are Gas Fees?

Gas fees are the transaction fees you pay to the Ethereum network every time you send crypto, trade on a DEX, interact with a smart contract, or mint an NFT. They are paid in ETH and compensate the validators who process and confirm your transaction.

Why Are They Called "Gas"?

The term comes from the analogy of petrol for a car. Just as a car needs petrol to run, every Ethereum operation requires a certain amount of "gas" to execute. More complex operations (like a complicated DeFi swap) require more gas than simple ones (like sending ETH to a friend).

How Gas Fees Are Calculated

Gas fee = Gas units used x Gas price (in Gwei)

• Gwei: A tiny unit of ETH. 1 Gwei = 0.000000001 ETH.
• Gas units: A measure of computational work. A simple ETH transfer uses 21,000 gas units. A complex DeFi transaction might use 200,000+ gas units.
• Gas price: Set by market demand. When the network is busy, gas prices spike as users bid higher to get their transaction processed faster.

Gas Fees in Indian Rupees

During normal periods, sending ETH might cost Rs 100-500. During peak congestion (NFT launches, market crashes, major DeFi events), fees have spiked to Rs 5,000-30,000 per transaction - making small transactions completely uneconomical.

How to Reduce Gas Fees

• Transact during off-peak hours (often early morning IST when US/Europe markets are asleep).
• Use Layer-2 networks like Polygon where fees can be under Rs 1.
• Use a gas tracker website (like ethgasstation.info or etherscan.io/gastracker) to find the cheapest time to transact.
• Set a gas limit slightly above the estimated amount - not too high (wasteful) and not too low (transaction fails and you still lose the gas).