Crypto Bridge Cost Comparator

Bridge Fee Estimator

Nominal fee alone doesn't tell the whole story: bridges have accounted for roughly 40% of all Web3 exploit losses since 2022 ($2B+), so a "cheap" bridge with a thinner security track record can end up costing far more in expected risk than a slightly pricier, well-audited one. Toggle "Rank By" below to see both numbers side by side.

Amount to Bridge (USD) Source Chain EthereumArbitrumOptimismBasePolygonBSC Destination Chain ArbitrumOptimismBaseEthereumPolygonBSC Rank By Nominal Fee (lowest first) Risk-Adjusted Cost (lowest first) Compare Bridges

Bridge Comparison — Features

Bridge	Model	Liquidity	Canonical	Audit	Risk Tier*
Stargate	Liquidity pools	$200M+	Yes (USDC/USDT)	✅ Multiple	Tier 1 · Low
Across	Optimistic	$100M+	Yes (USDC)	✅ Multiple	Tier 1 · Low
Hop Protocol	hToken + AMM	$80M+	No	✅ Multiple	Tier 2 · Low-Med
Orbiter Finance	Maker/Taker	$30M+	No	✅ 1	Tier 4 · Med-High
deBridge	Oracle + Liquidity	$50M+	Yes	✅ Multiple	Tier 3 · Medium
Synapse	Liquidity pools	$60M+	No	✅ Multiple	Tier 3 · Medium

* Illustrative risk tier — see methodology below. Not an audited actuarial rating.

Risk-Adjusted Cost — Methodology & Limitations

Bridges have been the single biggest source of Web3 exploit losses since 2022 — roughly 40% of the $2B+ total — and it's not a historical problem: Kelp DAO's LayerZero-adapter exploit in April 2026 alone lost $280–293M. A bridge's nominal fee says nothing about that risk, so this calculator adds two extra cost components:

• Expected Loss = Transfer Amount × Risk Score. The Risk Score is an illustrative annualized basis-point figure assigned by tier (5bps / 10bps / 20bps / 35bps), based on each bridge's audit count, TVL and track record as shown in the tables above — a simplified proxy, not a measured probability.
• Time-Value-of-Delay = Transfer Amount × 4.5% assumed annualized yield × (finality time in days ÷ 365) — the opportunity cost of capital sitting in transit instead of earning yield elsewhere. For minutes-scale bridges this is usually negligible; it matters more for slower routes.
• Risk-Adjusted Cost = Nominal Fee + Expected Loss + Time-Value-of-Delay.

Limitations: the risk tiers above are illustrative, relative estimates for comparing bridges against each other — they are not audited actuarial data, insurance pricing, or a guarantee of safety. Bridge security changes over time (new audits, new exploits, TVL shifts). Before moving a large amount, check the bridge's current audit reports, incident history and bug-bounty status yourself rather than relying solely on this tool.

Bridge Safety Tips

• Always use official URLs — bookmark them, don't Google search before bridging
• Start with a small test transaction ($10) on any new bridge
• Check if the bridge uses canonical tokens (USDC) or wrapped tokens (risks losing peg)
• Larger amounts → use higher-security bridges even if fees are slightly higher
• Never bridge during high congestion — gas spikes can eat your fee savings