Fast execution
Quick turnarounds with upfront estimates so you know what to expect before sending, ideal for fixedfloat exchange when time matters.
Lightning routes
Use BTC over Lightning where supported to speed up settlement and lower costs on your fixedfloat swap.
Self‑custody first
Send from your wallet and receive back to your wallet. No sign‑up required for estimates across fixedfloat crypto pairs.
Supported assets
Popular assets available for fixedfloat exchange and fixedfloat swap. Explore fixedfloat crypto coverage below. Availability may vary.
Bitcoin
BTC • On-chain and Lightning where available.
Ethereum
ETH • ERC‑20 tokens supported for estimates.
Stablecoins
USDT, USDC • On major chains.
Solana
SOL • Fast finality for quick swaps.
Tron
TRX • Low fees for stable transfers.
More
LTC, DOGE and others on demand.
Fees and limits
Network costs
Fees on each chain change with demand and are paid to miners or validators during your fixedfloat exchange.
Service spread
A small spread may apply and is reflected in the quoted estimate for any fixedfloat swap.
Operational limits
Minimums and caps vary by asset pair, route, and liquidity across fixedfloat crypto flows.
You always see an estimated receive amount before you decide to proceed, whether you pick a fixed float or market‑tracking option on ff exchange (ff io).
Fixed versus float
Fixed rate
- Quote holds for a brief period in a fixedfloat swap
- Know your receive amount in advance for your fixedfloat exchange
- Useful when predictability matters on fixed float routes
Float rate
- Tracks the market at execution for fixedfloat crypto pairs
- May yield a better final result depending on volatility
- Good when you prefer flexibility on the fixed float option
How it works
Select assets
Pick what you want to send and what you plan to receive for your fixedfloat exchange.
Review estimate
See the current quote with fixed or float options before sending on ff exchange.
Complete transfer
Send from your wallet and receive to your wallet on the target chain to finish the fixedfloat swap.
Lightning Network
When a route supports BTC over Lightning, settlements can be near‑instant and fees lower than typical on‑chain transactions. It is a practical option for smaller, time‑sensitive fixedfloat swaps.
Security and privacy
Self‑custody
Funds remain under your control from start to finish throughout any fixedfloat crypto flow.
Frictionless access
Use estimates without creating an account or sharing identity on ff io.
Secure transport
All requests are encrypted over HTTPS during your fixedfloat exchange.
FAQ
What is FixedFloat Fast?
It is a streamlined interface for quick crypto swaps with upfront estimates and optional Lightning for BTC where supported.
How do I make a swap?
Select your assets, enter an amount to view the quote, then proceed with your wallet to finalize the exchange.
Is Lightning Network available?
Yes, when the route supports it, BTC over Lightning can reduce fees and settlement time.
Which assets are supported?
BTC, ETH, USDT, USDC, SOL, TRX, LTC and other assets depending on the route and liquidity.
What fees apply?
Network fees plus any service spread reflected in the quote. Minimums and caps vary by pair.
Discover fixedfloat exchange options designed for speed and clarity. Run a fixedfloat swap with a simple quote flow and broad asset coverage. Learn more about fixedfloat crypto, fixed float, ff exchange and ff io in our guides.