Cross-Chain Arbitrage Calculator

Calculate potential profit from cross-chain arbitrage opportunities after accounting for bridge fees, gas costs, and slippage on both chains.

Inputs

Trade size ($)

Buy price (source chain)

Sell price (dest chain)

Bridge fee (flat $)

Bridge fee (%)

Source chain gas ($)

Dest chain gas ($)

Slippage per trade (%)

Number of round trips

Tab to move between fields

Results

Net profit per trip ($)

$25.78

≈ 5 cups of coffee

ROI per trip (%)0.26%

Price spread (%)1.11%

Total costs ($)$85.33

Bridge cost ($)$15.00

Slippage cost ($)$60.33

Total gas cost ($)$10.00

Total net profit ($)$25.78

Break-even spread (%)0.85%

Break-even price diff ($)$15.36

Total Capital Required$10,085.33

How to Use This Calculator

Enter the Trade Size ($) — the amount you are arbitraging across chains.
Set the Buy Price on the source chain and the Sell Price on the destination chain — the difference is your gross profit.
Enter the Bridge Fee (flat $ + percentage) and Gas Costs on each chain.
Set expected Slippage (%) to account for price impact on each swap.
Review Net Profit, ROI %, and Break-Even Price Difference to assess whether the spread is large enough to be worth executing.

How the result changes with Buy price (source chain)

Buy price (source chain)	Net profit per trip ($)
10,000,000	-$10,053.19
35,000,000	-$10,054.48
65,000,000	-$10,054.72
90,000,000	-$10,054.80

What each input means

Trade size ($): Total USD value of the trade on the source chain.
Buy price (source chain): Token price on the source chain where you buy.
Sell price (dest chain): Token price on the destination chain where you sell.
Bridge fee (flat $): Fixed fee charged by the cross-chain bridge.
Bridge fee (%): Percentage fee charged by the bridge on the transfer amount.
Source chain gas ($): Gas cost for the swap transaction on the source chain.
Dest chain gas ($): Gas cost for the swap transaction on the destination chain.
Slippage per trade (%): Expected price slippage on each swap (buy and sell).
Number of round trips: How many times you plan to execute this arbitrage.

What each result means

Net profit per trip ($): Profit after all fees, gas, and slippage for one round trip.
ROI per trip (%): Return on investment as a percentage of trade size.
Price spread (%): Percentage difference between buy and sell prices.
Total costs ($): Sum of bridge fees, slippage, and gas costs.
Bridge cost ($): Total bridge fee (flat + percentage).
Slippage cost ($): Combined slippage on buy and sell sides.
Total gas cost ($): Gas costs across both chains.
Total net profit ($): Aggregate profit across all round trips.
Break-even spread (%): Minimum price spread needed to cover all costs.
Break-even price diff ($): Minimum absolute price difference to break even.

How this is calculated

Worked example, using the default values

Identify Input Parameters
4 parameters
Trade size ($) = 10000, Buy price (source chain) = 1800, Sell price (dest chain) = 1820, Bridge fee (flat $) = 5 = 9 input(s) provided
Calculate Net profit per trip
Net profit per trip = grossProceeds - tradeSize - totalCosts
25.78 = $25.78
Calculate ROI per trip
ROI per trip = (netProfitPerTrip / tradeSize) * 100
0.2578 = 0.2578%
Calculate Price spread
Price spread = ((sellPrice - buyPrice) / buyPrice) * 100
1.1111 = 1.1111%

Engine last updated July 26, 2026. Checked against 2 independently-derived tests — how we verify calculators.

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