Bridge Cost Comparator
Free Bridge Cost Comparator. Compare crypto bridge routes by estimated total fee, speed, and security score across major L2 and multichain bridges.
Fees and speed are estimates for comparison. Always verify current route quotes on the bridge before sending funds.
How to use Bridge Cost Comparator
The Bridge Comparator calculates and compares the total cost of moving assets between blockchain networks across multiple bridge protocols, helping you identify the cheapest and fastest cross-chain transfer option. Enter your source network, destination network, asset, and amount to see a side-by-side comparison of bridge fees, estimated transfer times, and net amounts received.
Use it before every cross-chain move to avoid overpaying on bridge fees, which can range from under 0.05% to over 1% depending on the bridge and network congestion. For large transfers ($10,000+), even a 0.3% fee difference between bridges represents $30 in direct savings, always compare before bridging.
What do the inputs mean?
Source network and destination network define the bridge direction (e.g., Ethereum → Arbitrum, Polygon → Optimism). Token is the asset being transferred: USDC, USDT, ETH or DAI. Amount is how much you send; each bridge's protocol fee is modelled as a flat percentage of it plus a small fixed fee, so minimum amounts and tiered fee structures for larger transfers are not applied.
The five bridges listed are Across, Stargate, Hop, Synapse and LayerZero OFT, ranked from cheapest to most expensive. Each shows the amount received, the protocol fee, a network fee covering gas on both the source and destination chains, the estimated transfer time and a security score out of 5. Some bridges use liquidity pools with variable fees while others use canonical bridges with fixed fees; the calculator does not distinguish between these types and applies the same percentage-plus-fixed-fee estimate to every route.
How to interpret results correctly
The bridge cost comparator shows the total cost of moving tokens from one chain to another across multiple bridge options. The total cost includes: source chain gas (to approve + deposit), the bridge protocol fee (a percentage of the amount bridged plus a small fixed fee) and destination chain gas (to finalize); slippage on AMM-based bridges is not modelled, so check pool depth separately on large transfers. The cheapest bridge is not always best, also evaluate speed (time-to-finality) and security model (trusted vs. trustless).
The "net received" amount is the critical figure: this is what you actually get on the destination chain after all costs. Compare this across bridges, not the quoted fee, as some bridges show low percentage fees but apply hidden slippage or deliver fewer tokens than the stated amount due to pool depth limitations on large transfers.
What scenarios can you model?
Large transfer optimization: for amounts over $10,000, the bridge fee percentage dominates total cost. A bridge with 0.04% fee is $6 cheaper than one with 0.1% fee on a $10,000 transfer, minor. But on $100,000, the difference is $60. Calculate the crossover point where a faster but more expensive bridge becomes rational (e.g., saving 30 minutes of wait time vs. $20 more in fees).
Frequent small transfer routing: for users bridging small amounts ($100–500) frequently (weekly DCA to L2), source chain gas can be the dominant cost. Calculate the monthly total cost across different routing strategies: mainnet→L2 bridge vs. CEX withdrawal to L2 vs. native L2 onramp. The CEX withdrawal route often has lower gas but requires KYC.
What mistakes make this calculation wrong?
- Bridging large amounts through AMM-based bridges without checking liquidity depth. A $50,000 USDC bridge through a pool with $200,000 USDC depth will cause significant slippage, you receive fewer USDC than the stated fee implies. Always check pool depth for amounts >5% of pool TVL.
- Ignoring destination chain gas requirements. Some bridges charge no protocol fee but deliver to an address that needs native gas token to interact with any contract. Receiving $1,000 USDC on a chain where you have zero ETH (for gas) means you cannot use the funds until you acquire gas separately.
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Frequently asked questions
What is a crypto bridge comparator?
A crypto bridge comparator ranks cross-chain bridges by total cost (gas + protocol fee + slippage), transfer time, and security model. For a $1,000 ETH→Arbitrum transfer in October 2026, with mainnet gas near 0.1 Gwei, fast bridges such as Across cost roughly $0.50–2 in total and transfers take about 2 to 30 minutes.
Which bridge is cheapest for ETH to Arbitrum?
Across Protocol and Stargate typically charge 0.04%–0.10% on $1k transfers (around $0.40–$1, plus a few cents of gas at 2026 gas prices), while the official Arbitrum bridge charges no protocol fee (just L1 gas) but takes ~10 minutes for deposits and 7 days for withdrawals. Hop and Synapse sit a little higher, at roughly $1–2.50.
How are bridge fees calculated?
Bridge cost = source chain gas + protocol fee (% of amount) + LP/relayer fee + destination chain gas. On a $500 USDC bridge from Ethereum to Polygon at October 2026's ~0.1 Gwei you might pay ~$0.05 source gas + 0.05% protocol ($0.25) + ~$0.01 destination gas = ~$0.30 total; at 10 Gwei the source gas alone would be ~$5.
What is the most common bridge mistake?
Sending tokens to the wrong chain address or using a bridge that does not support the destination network — funds can be unrecoverable. Always confirm the receiving chain in your wallet, send a $5 test transfer first, and never bridge tokens that have a different contract on the destination (use a swap-and-bridge router like LI.FI instead).
Wormhole vs LayerZero vs Across — which is safest?
Across uses optimistic verification with UMA and has had zero exploits as of 2026; LayerZero relies on a configurable oracle+relayer set (DVN) and has $7B+ TVL with no protocol exploits; Wormhole was hacked for $326M in Feb 2022 but has since added Guardian set rotation. Pick Across for small EVM transfers and LayerZero for non-EVM.
Are bridges taxable events?
In most jurisdictions (US, UK, AU, EU) a like-for-like bridge of the same asset (ETH on L1 → ETH on Arbitrum) is generally not a taxable disposal, but wrapping (BTC → wBTC) or bridges that mint a different token may trigger CGT. Track the bridge tx hash and consult a crypto tax pro before assuming.
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