ethers.js

JavaScript library for Ethereum

JSlibraryfrontendcontracts

docs.ethers.orgUpdated 2026-11-02

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About

ethers.js is the classic JavaScript library for Ethereum: wallet connections, contract calls, signing and event listening, with complete docs and a rich tutorial ecosystem.

Friendly documentation and the richest tutorial ecosystem. New projects can also consider viem — different API style, similar capability.

Main uses

Contract interaction
Wallets & signing
Event listening

Site info

CategoryDevelopers

TypeLibrary

LanguagesEnglish

AccessCode library

FeesFree

FAQ

What is ethers.js?

A clean Ethereum library for browsers and Node — signing, contract calls and unit handling.

ethers or web3.js?

New projects mostly choose ethers or viem for API consistency; web3.js remains maintained for legacy stacks.

How do I reach the official ethers.js site safely?

The “Visit official site” button on this page points to ethers.js’s official address: docs.ethers.org. Fake clones are common in crypto — verify the domain and bookmark this page or the official URL.

Does ethers.js cost money?

Free

Visit official site ↗