all bridges routes

Base Bridge

Bridge any token to and from Base — the Coinbase L2 across 50+ networks — ETH, USDC, USDT and dozens more in one non-custodial transaction. Median delivery 28 seconds via Symbiosis routing layer.

Open Base bridge

Proven at scale

Five years of secure cross-chain infrastructure

2021

Live Since

2021

50+

Chains

50+

58 sec

Avg bridge time

58 sec

$10B

Total volume

$10B

CROSS-CHAIN GUIDE

How to bridge to Base

Example quote from 25 September 2026: sending 3,000 USDC (~$3,000) from Ethereum returns about 1.1178 ETH on Base via Symbiosis, estimated ~35 sec — no wrapped tokens beyond the standard route, fully non-custodial. Symbiosis works as a liquidity meta-aggregator, comparing routes across multiple DEXes and bridge providers and picking the best one by price, fee, and speed automatically. This is one of the most popular flows on this corridor; the same widget supports any source chain and token combination. Here's how the flow works:

Pick the source. Set Ethereum as source and Base as destination — the USDC sits in an Ethereum wallet, and the goal is access to Base DeFi and Coinbase-native apps.
Connect wallets. MetaMask on the Ethereum side, MetaMask on the Base side. Symbiosis reads the destination address automatically from the connected wallet — no manual paste required.
Enter the amount. 3,000 USDC (~$3,000) in this example. Keep enough ETH in the wallet to cover network gas.
Review the quote. Symbiosis displays the exact ETH amount on Base (about 1.1178 ETH in this example), the flat Symbiosis fee in USD, and ETA (~35 sec). The quote is locked in before signing — 2% slippage tolerance protects against sudden price moves.
Sign and confirm. Sign the Ethereum transaction in MetaMask. ETH arrives in MetaMask once the route completes — track the transfer on Symbiosis Explorer.

Base Bridge — live route in PRO mode: 3,000 USDC (Ethereum) to 1.127 ETH (Base) · Symbiosis

About bridging to Base

Why this route. Base is Coinbase's layer 2, and its lending centres on Morpho, which powers Coinbase's crypto-backed USDC loans; Aave and Uniswap run Base deployments too.
What you receive. ETH on Base pays gas and can be supplied as collateral in those markets. Here USDC leaves Ethereum, and one signature in your wallet sends it.
Watch out for. Base mainnet is chain ID 8453, while Base Sepolia (84532) is a testnet whose ETH has no value. If you want dollars on Base later, pick native USDC, not USDbC, the older bridged token that Circle does not issue.
Speed. Across all routes into Base, median delivery 21 seconds; 90th percentile 84 seconds, over the 90 days to 25 September 2026.

ROUTE ESTIMATES

Estimated fees

Approximate fees and swap time based on historical averages, updated 3x/week. Actual values may vary.

Amount

Receive

Fee + Gas

Time

1,000 USDC

0.3767 ETH

$6.03

~63s

5,000 USDC

1.886 ETH

$21.73

~63s

10,000 USDC

3.768 ETH

$49.64

~63s

25,000 USDC

9.419 ETH

$127

~63s

Ready to bridge? Live rates across
50+ networks. No signup, no KYC

Ready to bridge? Live rates across 50+ networks.
No signup, no KYC

Start a swap

Crypto coins background — Symbiosis blog

WHY SYMBIOSIS

Secure by design. Proven at scale

Audited in the open

No KYC, no custody, no intermediaries. Audited by Decurity, Zokyo, SlowMist, and Omniscia — 13 public audit reports across 11 protocol modules (Core, MetaRouter v3, Pool, TON Bridge v1+v2, Relayers Network, Staking, Frontend). All reports open-source on GitHub. 4+ years live on mainnet (since March 2022) with zero major security incidents. Active bug bounty program.

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Audited in the open

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Two-layer staking security

Cross-chain transactions routed via Octopools AMM (scans liquidity across DEXs and chains for minimal slippage), then signed by an MPC group via Threshold Signature Scheme (TSS) — no single party can move user funds. Two security layers: Symbiosis PoS Staking (SIS-collateralised relayer nodes) + Symbiotic restaking (additional slash-able collateral). 2/3 stake quorum for epoch changes.

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Two-layer staking security

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$8B+ across 54 chains

$8B+ total volume bridged across 5M+ transactions from 800K+ unique wallets. Supports 54 networks — more than any other cross-chain bridge (Across 35+, deBridge 30+, Allbridge 20). EVM + non-EVM in one route — Ethereum, Solana, BNB Chain, TON, Tron, Bitcoin, Arbitrum, Polygon, and 46 more. Per-transaction range: $10 to $140,000 — handles retail swaps and whale trades on the same route.

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Still have questions?

How do I bridge from Ethereum to Base?

Open the widget above and set Source to Ethereum, Destination to Base. Pick your token on each side — the widget pulls a live quote and shows the receive amount and fee before you sign. No native gas required on the destination.

Which is the best Base bridge?

Symbiosis is a non-custodial cross-chain aggregator covering multiple networks. Funds remain in your wallet at every step — the contract executes the swap and release atomically. No sign-up, no KYC, audited contracts.

How do I bridge from Abstract to Base?

Open the widget above and set Source to Abstract, Destination to Base. Pick your token on each side — the widget pulls a live quote and shows the receive amount and fee before you sign. No native gas required on the destination.

How do I bridge from Arbitrum to Base?

Open the widget above and set Source to Arbitrum, Destination to Base. Pick your token on each side — the widget pulls a live quote and shows the receive amount and fee before you sign. No native gas required on the destination.

How do I bridge from Polygon to Base?

Open the widget above and set Source to Polygon, Destination to Base. Pick your token on each side — for example POL on Polygon to ETH on Base — and the widget pulls a live quote from the Symbiosis routing engine and shows the receive amount and fee before you sign. No native gas required on the destination.

How do I bridge from BNB Chain to Base?

Open the widget above and set Source to BNB Chain, Destination to Base. Pick your token on each side — the widget pulls a live quote from the Symbiosis routing engine and shows the receive amount and fee before you sign. No native gas required on the destination.

How do I bridge from Tron to Base?

Open the widget above and set Source to Tron, Destination to Base. Pick your token on each side — the widget pulls a live quote from the Symbiosis routing engine and shows the receive amount and fee before you sign. No native gas required on the destination.

How do I bridge from Bitcoin to Base?

Open the widget above and set Source to Bitcoin, Destination to Base. Pick your token on each side — the widget pulls a live quote from the Symbiosis routing engine and shows the receive amount and fee before you sign. No native gas required on the destination.

Popular bridges

A few popular bridge routes

Two chains. One click

Bridge tokens to and from Base. Non-custodial, audited, no sign-up. Live quote above.

Open Base bridge

Base Bridge — Symbiosis banner background

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