free tool · DeFi and perps calculators

price impact and slippage calculator

See how much your buy or sell moves the price before you swap.

100% free
No sign-up
No wallet connection
Live data: DexScreener

your numbers

Contract address or link (optional)

Pool liquidity (both sides)$DexScreener's Liquidity figure

Side

Trade size$

Pool fee and slippage (0.25% fee, 5% slippage by default)

Pool fee%e.g. 0.25% Raydium, 0.3% Uniswap v2Slippage tolerance%only protects against the pool moving

your result

Price impactnoticeable

3.33%

Execution price vs pool price on a $1,000.00 buy, fee aside.

3.33%noticeable0%20%+

You get (value)

$965.40

$34.60 lost to impact + fee

Pool price after your buy

+6.76%

Minimum received at your slippage

$917.13

worst fill before the swap reverts

Largest buy for 1% impact: $300.75 · 5%: $1,503.76

Impact by trade size · cost of impact + fee

$1000.33%cost $0.58
$5001.66%cost $9.41
$1K3.33%cost $34.60
$5K16.63%cost $723.47
$10K33.25%cost $2,514.07

Your own price impact is already in the quote. Slippage tolerance only covers the pool moving between the quote and your transaction landing, for example other buyers or snipers in the same block.

Assumes a classic x·y=k pool (Raydium AMM, PumpSwap, Uniswap v2, Aerodrome volatile). Concentrated-liquidity pools (Raydium CLMM, Orca, Meteora DLMM, Uniswap v3) can be deeper or thinner near the price than their total liquidity suggests.

Runs in your browser. Nothing is stored or sent to us. Not financial advice.

quick answer

How do you calculate price impact?

For a 50/50 constant-product pool, price impact ≈ your trade after fees divided by the pool's side in the currency you pay with. $1,000 into a pool with $30,000 on the SOL side is about 3.3%.

how to use the price impact and slippage calculator

Price impact is how much your own trade moves a pool's price against you. Paste a token's contract address to load its pool liquidity, enter a trade size, and see the impact, what you actually receive, how far the chart moves and the biggest trade that stays under 1% or 5%.

Load the pool
Paste a contract address to load the most liquid pool, or type the pool's liquidity (both sides, in USD).
Enter your trade
Enter your trade size and choose buy or sell.
Set the pool fee
Set the pool fee (0.25% Raydium AMM, 0.30% Uniswap v2, 0.30% to 1.25% PumpSwap depending on market cap).
Set slippage
Set your slippage tolerance to see the minimum you would accept.

formula

The exact math the price impact and slippage calculator runs, so you can check any result by hand.

pool side R = liquidity ÷ 2 (50/50 constant-product pool)amount after fee a = trade × (1 − fee)buy price impact = a ÷ Rsell price impact = a ÷ (R + a)received = R × a ÷ (R + a)largest buy for impact i = i × R ÷ (1 − fee)

guide

price impact vs slippage

Price impact is caused by your own trade: in a constant-product pool (x × y = k), every token you buy makes the next one more expensive. Slippage tolerance is the extra movement you allow between the quote and the moment your transaction lands, usually because other traders or snipers bought in the same block. Your own price impact is already inside the quote.

worked example

A memecoin pool holds $60K of liquidity: about $30K on each side. A $1,000 buy with a 0.25% fee puts $997.50 into the pool, a 3.3% price impact. You receive about $965 worth of tokens at the pre-trade price, and the pool price ends about 6.8% higher than before your buy.

The same $1,000 in a $600K pool has a 0.33% impact. Liquidity, not market cap, decides how much you can trade.

which pools this fits

The formula is exact for constant-product pools: Raydium AMM v4 and CPMM, PumpSwap, Uniswap v2 and Aerodrome volatile pools. Concentrated-liquidity pools (Raydium CLMM, Orca Whirlpools, Meteora DLMM, Uniswap v3) place liquidity in price ranges, so their real impact near the current price can be smaller or much larger than the total liquidity suggests. Treat the result as an estimate for those.

frequently asked questions

What slippage should I set for memecoins?

Enough to cover price movement from other traders while your transaction lands: often 5 to 15% on fast-moving Solana memecoins, less on deeper pools. Higher tolerance increases the risk of being sandwiched by MEV bots.

Why did I receive fewer tokens than expected?

Price impact on a thin pool, the pool fee, and other buys landing before yours. The minimum received at your slippage setting is the worst fill you allowed.

The next check traders usually run after this one.