MEV Protection Calculator
Protect your trades from sandwich attacks and MEV bots
Trade Parameters
What is MEV (Maximal Extractable Value)?
MEV (Maximal Extractable Value) refers to the maximum profit that can be extracted from block production beyond standard block rewards and gas fees. MEV bots scan the mempool for profitable opportunities and can manipulate transaction ordering to extract value from regular users.
Common MEV Attacks:
The most common MEV attack. A bot detects your pending swap, places a buy order before yours (frontrun) and a sell order after (backrun), profiting from the price movement your trade creates. You end up paying more than expected.
Bots see your transaction in the mempool and submit an identical transaction with higher gas to get executed first, capturing the opportunity meant for you.
Bots execute trades immediately after your transaction to profit from the price changes your large trade created.
Impact: MEV attacks cost DeFi users an estimated $500M+ per year. Large trades (>$10k) are especially vulnerable, with potential losses of 2-5% of trade value.
How to Protect Against MEV?
Protection Strategies:
Send transactions through private mempools (Flashbots, Eden Network) instead of public mempool.
Intent-based DEX with built-in MEV protection through batch auctions and solver competition.
Set tighter slippage tolerance. Less slippage = less profit opportunity for MEV bots.
Break up large trades into smaller chunks to reduce price impact and MEV attractiveness.
Pro Tip: For trades over $100k, consider using OTC desks or aggregators with built-in MEV protection. The larger the trade, the more important protection becomes.