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Changelly
1000+ Crypto Assets
Harmony (ONE) to Sei (SEI)

Swap Harmony (ONE) to Sei (SEI)

Exchange and convert ONE to SEI online instantly with Changelly

  • Enjoy fast transactions — swap Harmony for Sei in under 10 minutes.

  • No hidden fees — all costs are clearly shown before you confirm the exchange.

  • 24/7 support — exchange Harmony anytime, anywhere, with complete confidence.

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You send
😬Sorry, we did not find anything
— guaranteed rate available
You get
😬Sorry, we did not find anything
— guaranteed rate available

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Why Exchange ONE to SEI on Changelly?

Limits to Match Your Ambitions

Whether you're starting small or making a big move, we’ve got you covered. Our flexible limits let you exchange from just $20 all the way up to $1,000,000. No matter your strategy, you can swap ONE to SEI smoothly.

Support That’s Always There

Need help mid-swap? Our support team is available around the clock to assist with any questions or concerns. You're never left on your own—real users get real support, real fast. Enjoy a seamless experience every time you swap Harmony.

Ultimate Security

We believe in custody-free transactions. That means your assets go straight to your wallet after the exchange Harmony process. With no third-party storage and full transparency, you can convert with confidence on a truly secure crypto exchange platform.

ONE to SEI Price Chart

Harmony and Sei Market Data

updated at 16:18

Harmony Price

$0.00358 

24H % Change

3.25% 

Market Cap

$52.94M 

24H Volume

$7.01M 

Circulating Supply

14.8B 

Sei Price

$0.11394 

24H % Change

-2.05% 

Market Cap

$739.56M 

24H Volume

$77.43M 

Circulating Supply

6.49B 

Today's ONE to SEI Exchange Rate

Today's Harmony (ONE) to Sei (SEI) exchange rate is 1 ONE = 0.03140456 SEI. Over the past 24 hours, the rate of ONE to SEI has changed by 5.19%. This data is pulled live from our real-time converter, which tracks current market trends using the ONE calculator for accurate results every time.
Show more

ONE to SEI conversion rate

Rates from CoinMarketCap updated at 13:50

ONE to SEI

one
sei
0.001 one
0.00003 sei
0.005 one
0.00015 sei
0.01 one
0.0003 sei
0.05 one
0.00148 sei
0.1 one
0.00296 sei
0.5 one
0.01479 sei
1 one
0.02958 sei
5 one
0.1479 sei
10 one
0.29579 sei
25 one
0.73948 sei
50 one
1.479 sei
100 one
2.9579 sei
150 one
4.4369 sei
500 one
14.79 sei
1000 one
29.579 sei
3000 one
88.738 sei

SEI to ONE

sei
one
0.001 sei
0.03381 one
0.005 sei
0.16904 one
0.01 sei
0.33808 one
0.05 sei
1.6904 one
0.1 sei
3.3808 one
0.5 sei
16.904 one
1 sei
33.808 one
5 sei
169.04 one
10 sei
338.08 one
25 sei
845.19 one
50 sei
1.69K one
100 sei
3.38K one
150 sei
5.07K one
500 sei
16.9K one
1000 sei
33.81K one
3000 sei
101.42K one
Hide

How to Swap ONE to SEI in 5 Easy Steps

Set up your exchange

To exchange ONE to SEI, simply use the calculator at the top of this page. Choose the crypto pair in the “You send” and “You get” fields, then enter the amount you want to swap. Our real-time price calculator will instantly display how much Sei you’ll get, so you know exactly what to expect before moving on.

Select the exchange rate

Changelly lets you pick the ONE exchange rate that works best for you. You can go with Floating for flexibility or Fixed for predictability. To get the best exchange rates, always review the latest numbers before confirming. Use our tools to calculate the precise exchange amounts and move forward with full transparency.

Enter your crypto wallet address

Now, it’s time to enter your crypto wallet address—this is where your funds will be sent once the exchange is completed. Make sure it’s accurate and ready to receive your coins. Don’t have a Sei wallet set up yet? No worries—Changelly’s partnered with multiple trusted providers, so you can easily choose one during the process.

Complete the exchange

Time to finalize your ONE exchange. Carefully follow the payment instructions and send the exact amount of crypto to the wallet address shown on-screen. Make sure to complete your transaction within the given time limit, as wallet addresses can expire.

Check your crypto wallet

All done! You’ve just swapped ONE to SEI in only a few easy steps. Now just sit back while the process finishes up behind the scenes. Your new coins will drop into your wallet shortly—no extra action needed.

Exchange Crypto without any Hassle

Looking for a coin to exchange and add to your crypto collection? We've got you covered with a list of 1000+ cryptocurrencies. To get started, click the button below.
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Exchange other crypto to Sei

USDC to SEIXRP to SEIALGO to SEIXTZ to SEIETH to SEIADA to SEIBTC to SEIUSDCSOL to SEILTC to SEIBSV to SEIXMR to SEIAZERO to SEIAVAX to SEIUSDT20 to SEINEARMAINNET to SEIATOM to SEIAVAXC to SEISAND to SEIDASH to SEIUSDTRX to SEIUSDTBSC to SEIDOT to SEIMATIC to SEIRUNE to SEITIA to SEIDOGE to SEIBNBBSC to SEISOL to SEIKSM to SEI

FAQ

Do I need an ID verification to swap ONE to SEI?

Usually, no. You can exchange ONE to SEI and start a swap without verifying your ID. But sometimes, our system may flag a transaction as risky. In that case, you’ll need to verify for safety reasons. It doesn’t happen often, but it helps us keep the platform secure for everyone who wants to exchange crypto smoothly.

What are the fees to convert Harmony to Sei?

Every ONE exchange includes a blockchain network fee and a small service fee from Changelly. Network fees depend on congestion—if the chain’s busy, the cost goes up. 
You’ll see all the fees upfront before confirming the trade, so you always know what to expect.

What does ONE to SEI exchange rate mean?

It tells you how much Harmony you’ll get when you exchange Sei. The price you see depends on demand, market trends, and how easily users can exchange Harmony at the moment. We show real-time data so you’re always trading at the most accurate rate available.

How can I convert ONE to SEI on Changelly?

Changelly’s exchange service lets you convert ONE to SEI in just a few minutes—whether you’re using our app or website. Start by entering how much ONE  you want to exchange, and our converter will instantly show you an estimated amount of SEI. Then simply follow the on-screen steps to complete the conversion.

Can I buy SEI with ONE?

Yes, you can. On Changelly, it’s easy to buy SEI with ONE. Just head over to our exchange page, choose the two assets, and start the swap. You can also convert them back the other way.

What is the minimum amount to exchange ONE to SEI?

You can start with as little as $20 worth of crypto. The minimum amount depends on the ONE exchange rate, the chosen crypto pair, and current network fees. Our converter uses live data from the cryptocurrency market to calculate the exact requirement in real time. You’ll see the minimum clearly before confirming your swap using our built-in price calculator—so there are no surprises.

How long does it take to convert ONE to SEI?

A typical swap only takes 5 to 10 minutes. 
When you convert ONE to SEI, your transaction goes through several steps behind the scenes. Sometimes it’s quicker, sometimes a bit slower—depending on the blockchain and/or market activity. 
No matter the crypto pair, our exchange process is built to be as fast and smooth as possible.

How do I use the ONE to SEI converter tool?

Simply enter the amount of ETH you’d like to exchange, and the converter will instantly display the estimated amount of BTC you’ll receive. Then, follow the on-screen steps to complete your transaction quickly and securely.

Still Have Questions About Exchanging ONE to SEI on Changelly?

We’ve covered the most common questions about the ONE exchange, but if something’s still unclear, feel free to ask. Our support team is here 24/7 and ready to help. Whether it’s exchanging ONE to SEI, or other crypto trades, we’ll make sure you get the info you need.
question

Exchange Harmony to other crypto

ONE to DAIONE to SLPONE to BTCONE to ICPONE to TONCOINONE to USDCONE to MATICONE to JASMYONE to USDTBSCONE to BTTONE to XRPONE to YFIONE to ETHONE to FLRONE to ZILONE to FTMONE to 1INCHONE to FTMMAINNETONE to NIMONE to CAKEONE to VETONE to ADAONE to BNBBSCONE to USDTONE to SOLONE to ARBONE to ATOMONE to BNBONE to XNOONE to XMR

Best Harmony exchange offers

From
To
Price
Pairs

Bitcoin
4.068382724... BTC
ONE/BTC

Ethereum
0.000001205... ETH
ONE/ETH

Litecoin
0.000045287... LTC
ONE/LTC

Dogecoin
0.027062663... DOGE
ONE/DOGE

Tether Tron ...
0.003533783...
USDTRX
ONE/USDTRX

Best Sei exchange offers

From
To
Price
Pairs

XRP
0.062193092... XRP
SEI/XRP

Cardano
0.310928822... ADA
SEI/ADA

SHIBA INU
15141.33462... SHIB
SEI/SHIB

Solana
0.000934867... SOL
SEI/SOL

BNB
0.000138151... BNB
SEI/BNB

Keep your Sei Safe and Sound

If you are searching for the best cryptocurrency wallets for your favorite coins, look no further! Whether you are a crypto pro or just starting out, these wallets might be a good option for crypto storage.
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Changelly has a professional team with great experience and even bigger potential

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Integrating Changelly services into Trezor Wallet's exchange has been a great success for all parties, especially the users. Working with Changelly is a pleasure, thanks to their professional and courteous approach.

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Changelly is the best option for users to access the most cost-savvy rates

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With Changelly's stellar team, we have developed a unique system to ensure exchanges are fulfilled in the fastest possible time and with immediate customer support.

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We are thrilled to partner with Changelly to provide an exceptional trading experience: anytime, anywhere - in a few simple taps!

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  • ONE to SEI Price Chart
  • ONE and SEI Market Data
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