Price Impact Calculator
Calculate AMM price impact for DeFi liquidity pool swaps
Liquidity Pool Information
Total Token A in pool
Total Token B in pool
Your Trade
Amount of input token
Impact Results
Price Impact
0.00%
Calculating...
Pool After Trade
Quick Examples:
When to Use Price Impact Calculator
Large DEX Swaps
Before executing big trades on Uniswap or PancakeSwap, calculate how much price impact you'll face. Helps decide whether to split the trade or find deeper liquidity elsewhere.
New Token Trading
New tokens often have shallow liquidity pools. Calculate price impact to understand the real cost before buying. A 10% price impact means you're paying 10% above market rate.
Liquidity Pool Analysis
Evaluate different pools before trading. Compare price impact across pools with varying liquidity depths. Choose the most efficient route for your trade size.
Trade Size Optimization
Find the optimal trade size that balances speed with cost. Calculate how breaking a large order into smaller chunks reduces overall price impact and saves money.
Liquidity Provider Planning
If you're providing liquidity, understand how different trade sizes affect your pool. Calculate potential price movements to estimate impermanent loss scenarios.
Bot Strategy Testing
Test arbitrage or trading bot strategies by simulating trades. Calculate profitability after accounting for price impact. Essential for MEV searchers and market makers.
Frequently Asked Questions
What is price impact in DeFi?
Price impact is the difference between the current market price and the actual execution price you pay when swapping tokens on a DEX. It occurs because your trade changes the ratio of tokens in the liquidity pool. Larger trades relative to pool size cause higher price impact as they shift the pool balance more significantly.
How do I use the price impact calculator?
Enter the liquidity pool reserves for both tokens and your trade amount. The calculator uses the constant product formula (x * y = k) to determine how your trade affects the pool and calculates the resulting price impact, execution price, and tokens received. Works for any AMM-based DEX like Uniswap or PancakeSwap.
What is acceptable price impact?
Under 1% is excellent for most trades. 1-3% is acceptable for mid-sized swaps. 3-5% is high and should prompt caution. Above 5% indicates very high price impact - consider splitting your trade or finding deeper liquidity. Some DEXs warn or block trades above certain thresholds.
Is this calculator free?
Yes! Our price impact calculator is completely free with unlimited calculations. No registration or wallet connection required. Use it to plan trades on any AMM protocol before executing on-chain.
Why does price impact matter?
Price impact directly affects how much you pay or receive in a trade. High price impact means you're getting a worse deal than the quoted market price. On low-liquidity pools, large trades can result in significant losses. Understanding price impact helps you optimize trade size and timing.
How can I reduce price impact?
Split large trades into smaller chunks over time. Trade on pools with deeper liquidity. Use DEX aggregators that route through multiple pools. Trade during high-volume periods when liquidity is better. Consider limit orders on order book DEXs to avoid price impact entirely.
What's the difference between price impact and slippage?
Price impact is predictable and caused by your trade size relative to pool liquidity. Slippage is unpredictable and caused by other traders' transactions between when you submit and when your trade executes. Price impact is calculated before the trade, slippage happens during execution.
Does this work for all DEXs?
This calculator works for AMM-based DEXs using the constant product formula (x*y=k) like Uniswap V2, PancakeSwap, and SushiSwap. It doesn't apply to order book DEXs or concentrated liquidity AMMs like Uniswap V3, which use different pricing mechanisms.
No comments yet. Be the first to share your thoughts!