# How to watch Ether balance changes - Hideyoshi Moriya - Medium

By [piyo.eth](https://paragraph.com/@piyo) · 2022-05-12

---

Testing import from medium

*   The example code below listens to Ether balance changes.
    
*   It gets Ether balance when a new block mined.
    
*   Strictly speaking, a fork can be happened. So you will need to count confirmation numbers depending on your application.
    

    const ethers = require('ethers')
    const network = 'rinkeby'
    const provider = ethers.getDefaultProvider(network)
    const address = '0xF02c1c8e6114b1Dbe8937a39260b5b0a374432bB'
    
    // Listen Ether balance changes
    let lastBalance = ethers.constants.Zero
    provider.on('block', () => {
        provider.getBalance(address).then((balance) => {
            if (!balance.eq(lastBalance)) {
             lastBalance = balance
       // convert a currency unit from wei to ether
       const balanceInEth = ethers.utils.formatEther(balance)
       console.log(`balance: ${balanceInEth} ETH`)
            }
        })
    })
    

Support
-------

If you find this article is helpful, it would be greatly appreciated if you could tip Ether to the address below. Thank you!

---

*Originally published on [piyo.eth](https://paragraph.com/@piyo/how-to-watch-ether-balance-changes-hideyoshi-moriya-medium)*