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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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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 22:50Harmony Price
$0.00674
24H % Change
1.71%
Market Cap
$99.3M
24H Volume
$5.17M
Circulating Supply
14.74B
Sei Price
$0.19152
24H % Change
0.04%
Market Cap
$1.2B
24H Volume
$100.9M
Circulating Supply
6.25B
Today's ONE to SEI Exchange Rate
Today's Harmony (ONE) to Sei (SEI) exchange rate is 1 ONE = 0.03517144 SEI. Over the past 24 hours, the rate of ONE to SEI has changed by 1.68%. This data is pulled live from our real-time converter, which tracks current market trends using the ONE calculator for accurate results every time.
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ONE to SEI conversion rate
Rates from CoinMarketCap updated at 21:16
ONE to SEI
one
sei
0.001 one
0.00003 sei
0.005 one
0.00017 sei
0.01 one
0.00035 sei
0.05 one
0.00174 sei
0.1 one
0.00348 sei
0.5 one
0.01741 sei
1 one
0.03483 sei
5 one
0.17415 sei
10 one
0.34829 sei
25 one
0.87074 sei
50 one
1.7415 sei
100 one
3.4829 sei
150 one
5.2244 sei
500 one
17.415 sei
1000 one
34.829 sei
3000 one
104.49 sei
SEI to ONE
sei
one
0.001 sei
0.02871 one
0.005 sei
0.14356 one
0.01 sei
0.28711 one
0.05 sei
1.4356 one
0.1 sei
2.8711 one
0.5 sei
14.356 one
1 sei
28.711 one
5 sei
143.56 one
10 sei
287.11 one
25 sei
717.78 one
50 sei
1.44K one
100 sei
2.87K one
150 sei
4.31K one
500 sei
14.36K one
1000 sei
28.71K one
3000 sei
86.13K one
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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.

Exchange other crypto to Sei
ADA to SEIAVAXC to SEILTC to SEIKSM to SEISAND to SEIBSV to SEIXRP to SEIDOT to SEIUSDTRX to SEIALGO to SEIETH to SEIBTC to SEIMATIC to SEIAZERO to SEIXTZ to SEITIA to SEIUSDCSOL to SEIRUNE to SEIXMR to SEINEARMAINNET to SEIDASH to SEIUSDT20 to SEIATOM to SEIAVAX to SEIBNBBSC to SEIUSDC to SEISOL to SEIDOGE to SEIUSDTBSC 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.

Exchange Harmony to other crypto
ONE to ETHONE to FLRONE to USDT20ONE to ICPONE to STXONE to DOGEONE to DAIONE to PEPEONE to ATOMONE to NIMONE to BCHONE to SOLONE to XNOONE to 1INCHONE to ZILONE to USDTONE to LTCONE to IOTAONE to TONCOINONE to MATICONE to XLMONE to LINKONE to JASMYONE to BNBONE to FTMONE to CAKEONE to BTCONE to BTTONE to FTMMAINNETONE to BNBBSC
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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.
Changelly is the best option for users to access the most cost-savvy rates
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.
We are thrilled to partner with Changelly to provide an exceptional trading experience: anytime, anywhere - in a few simple taps!
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