Instant fixed-rate swaps
Lock the rate the moment you press “Exchange”. No volatility surprises while your transaction confirms on-chain.
FixedFloat · ff io · ff platform · fix float
Instant fixedfloat exchange
Instant fixedfloat exchange
with hot-wallet liquidity
FixedFloat (ff-io.io / ff io) is an instant non-custodial fixed float crypto exchange built for traders who want predictable rates without registration. Swap Bitcoin, Ethereum, USDT, Monero and 100+ digital assets in minutes — at a fixed price or a float-rate market price.
100+
Cryptocurrencies
5 min
Avg. swap time
0.5%
From swap fee
24/7
Live support
Why FixedFloat
Fixedfloat exchange built for fast, private, predictable fixed float crypto swaps
The ff-io.io / ff io engine combines a deep hot-wallet inventory, partner liquidity and direct on-chain settlement to give US users one of the fastest crypto exchanges on the market.
No registration, no KYC*
Most pairs on the FF platform require zero account, zero email, zero ID. *AML checks may apply on flagged transactions.
Hot wallet that never sleeps
Our 24/7 FixedFloat exchange hot wallet is pre-funded with major coins, so payouts begin within seconds of the first network confirmation.
100+ coins and tokens
Trade across BTC, ETH, USDT (TRC-20/ERC-20), LTC, XMR, BNB, SOL, TRX, DOGE, BCH and dozens of altcoins from one screen.
Privacy by default
We don't request personal data for standard swaps and store the minimum logs required to deliver the service safely.
Real human support 24/7
Specialists answer in minutes, not days, in English, Russian, Spanish and 11 more languages.
Popular pairs
Top fixed float crypto markets on the FF platform
Quick access to the most liquid markets at ff-io.io / ff io. Click any asset to start a fixedfloat exchange.
How it works
Exchange crypto in four steps
FixedFloat exchange is fully automated — no chat with a manager, no waiting for human approval. The platform handles every step.
Choose a pair
Pick the asset you want to send (e.g. BTC) and the asset you want to receive (e.g. ETH). See the exact rate before confirming.
Enter destination
Paste the receiving wallet address. The widget validates the format and warns about exchange-specific tags or memos.
Send your crypto
FixedFloat generates a deposit address. Send your funds — the system detects the transaction and starts processing.
Receive in minutes
Once one network confirmation is in, the FF hot wallet pays out. Most swaps complete within 5 to 30 minutes.
FixedFloat: a complete guide to instant crypto exchange in the United States
FixedFloat — also written as fixed float, fix float, ffio or simply FF — is one of the longest-running instant cryptocurrency exchanges on the market. The platform you are visiting at ff-io.io is the official mirror of the original ff.io exchange and ships with the same engine, the same hot-wallet liquidity and the same partner network. If you have ever searched for fixedfloat exchange, fixedfloat exchange hot wallet, or ff platform and ended up here, you are in the right place.
What is FixedFloat (and why people search for “fixed float crypto”)
FixedFloat is a non-custodial cryptocurrency exchange. Non-custodial means the platform never holds your assets longer than the time it takes to perform a swap: you send coin A, the engine sends back coin B, the cycle ends. There is no balance to recharge, no on-platform wallet to fund and no margin account to manage. For US-based users, this dramatically reduces counterparty risk compared with traditional centralized exchanges.
The platform supports two execution modes: fixed rate (the price is locked when you create the order) and float rate (the price is recalculated at the moment of the payout, typically yielding a slightly better rate when markets move in your favour). Both modes are powered by the same FixedFloat exchange hot wallet — a deep liquidity reserve that lets the system pay you out within seconds of the first incoming network confirmation.
Who is FixedFloat for?
FF is purpose-built for crypto users who value speed, privacy and predictability:
- Active traders rotating between BTC, ETH and stablecoins between cycles.
- DeFi participants who need to cross-chain swap (e.g. ERC-20 USDT to TRC-20 USDT) without bridges.
- Privacy-focused users converting transparent assets to or from Monero (XMR).
- Long-term holders rebalancing their portfolios from a hardware wallet without an account.
- Newcomers buying their first crypto via a partner on-ramp and converting it to ETH or USDT.
How does the FixedFloat hot wallet work?
Every exchange platform has to solve the same problem: a customer sends asset A, but the platform must immediately deliver asset B from a different blockchain. FixedFloat uses a system of pre-funded hot wallets, one per supported network, that hold a working balance large enough to fulfil the typical request flow. As soon as a deposit lands and reaches the agreed minimum confirmation, the corresponding hot wallet broadcasts the outgoing transaction. There is no waiting on order books and no slippage.
Hot wallets are continuously rebalanced from cold storage, where the bulk of platform inventory is stored offline. This keeps the operational risk surface small while still allowing instant payouts during US market hours and beyond.
Fixed rate vs float rate — which one should US users choose?
Fixed rate is the right pick when:
- You are sending exactly the displayed amount and want a guaranteed price.
- You are paying an invoice that requires a specific output amount.
- You are exchanging from a slow chain (BTC) and want to lock the rate against market moves.
Float rate is the better choice when:
- You expect the price to move in your favour during the on-chain confirmation window.
- You are converting between two large-cap, fast-confirming chains (e.g. ETH ↔ USDT-TRC20).
- You want to capture the very best market price and accept a small downside risk.
What can I exchange on ff-io.io?
The FixedFloat platform supports more than 100 cryptocurrencies, covering every major use case: Bitcoin (BTC), Ethereum (ETH), Tether USDT (ERC-20, TRC-20, BEP-20), Litecoin (LTC), Monero (XMR), Bitcoin Cash (BCH), BNB, Solana (SOL), Tron (TRX), Dogecoin (DOGE), Polkadot (DOT), Cardano (ADA), Polygon (POL), Toncoin (TON), Ripple (XRP), Stellar (XLM), Dash (DASH), Zcash (ZEC) and many more. A full list is available on the coins page.
Is FixedFloat available to users in the United States?
Yes. FixedFloat (ff-io.io) is accessible to US-based users. Because the platform is non-custodial and does not provide investment advice, fiat banking or staking products, it operates outside the scope of regulated brokerage activity. Users remain responsible for tax reporting on capital gains in their home jurisdiction. For technical support of the US market we provide live English-speaking specialists 24/7.
How much does it cost?
FixedFloat charges a transparent swap fee starting from 0.5%, plus the standard on-chain network fee for the asset you receive. There are no hidden spreads, no idle-balance fees and no withdrawal surcharges. Detailed pricing for every supported pair is published on the fees page.
Why choose ff-io.io as your fix-float exchange?
- Speed. A median swap finishes in under 10 minutes for fast chains.
- Liquidity. The hot wallet handles size — multi-BTC orders without market impact.
- Privacy. Most pairs require zero personal data.
- Reliability. 99.95%+ uptime over multiple years of operation.
- API access. Wallets, payment processors and Telegram bots can plug in via the FixedFloat API.
Whether you call it fixedfloat, fix float, ffio, ff io or ff platform, this is the same instant cryptocurrency exchange — now also available at ff-io.io. Open the exchange widget and complete your first swap in minutes.