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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 04:08Harmony Price
$0.00366
24H % Change
3.54%
Market Cap
$54.13M
24H Volume
$4.66M
Circulating Supply
14.8B
Sei Price
$0.11119
24H % Change
0.60%
Market Cap
$721.75M
24H Volume
$51.83M
Circulating Supply
6.49B
Today's ONE to SEI Exchange Rate
Today's Harmony (ONE) to Sei (SEI) exchange rate is 1 ONE = 0.03289428 SEI. Over the past 24 hours, the rate of ONE to SEI has changed by 2.95%. 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 01:48
ONE to SEI
one
sei
0.001 one
0.00003 sei
0.005 one
0.00016 sei
0.01 one
0.00032 sei
0.05 one
0.00162 sei
0.1 one
0.00324 sei
0.5 one
0.01618 sei
1 one
0.03236 sei
5 one
0.16178 sei
10 one
0.32357 sei
25 one
0.80892 sei
50 one
1.6178 sei
100 one
3.2357 sei
150 one
4.8535 sei
500 one
16.178 sei
1000 one
32.357 sei
3000 one
97.071 sei
SEI to ONE
sei
one
0.001 sei
0.03091 one
0.005 sei
0.15453 one
0.01 sei
0.30905 one
0.05 sei
1.5453 one
0.1 sei
3.0905 one
0.5 sei
15.453 one
1 sei
30.905 one
5 sei
154.53 one
10 sei
309.05 one
25 sei
772.63 one
50 sei
1.55K one
100 sei
3.09K one
150 sei
4.64K one
500 sei
15.45K one
1000 sei
30.91K one
3000 sei
92.72K 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
SAND to SEIAVAX to SEISOL to SEILTC to SEIBTC to SEIUSDC to SEIXTZ to SEIMATIC to SEIRUNE to SEIDOT to SEIAVAXC to SEIUSDTBSC to SEIDOGE to SEIUSDCSOL to SEIXRP to SEIALGO to SEIAZERO to SEIBSV to SEIATOM to SEIDASH to SEIETH to SEIXMR to SEINEARMAINNET to SEIADA to SEIKSM to SEITIA to SEIBNBBSC to SEIUSDTRX to SEIUSDT20 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 BTCONE to STXONE to 1INCHONE to DOGEONE to TONONE to SOLONE to MANAONE to NOTONE to IQQONE to LTCONE to ETHONE to BCHONE to PEPEONE to XRPONE to TONCOINONE to JASMYONE to ZILONE to USDT20ONE to XNOONE to USDCONE to TRXONE to NIMONE to FTMMAINNETONE to BTTONE to ADAONE to YFIONE to XMRONE to FTMONE to USDTRXONE to XLM
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Keep your Sei Safe and Sound
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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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