Swap services with a fixed rate
Services that offer a fixed rate, with the lock window each one states. 8 of 8 services in this directory: SimpleSwap, ChangeNOW, Changelly, FixedFloat, Exolix, StealthEX, SideShift.ai, Swapzone.
Side by side
| Service | Fixed-rate window | Floating rate | Fee, as stated |
|---|---|---|---|
 SimpleSwap | 20 min | Yes | From 0.2%, built into the quoted rate |
 ChangeNOW | Lock window not stated | Yes | No single %, built into the quoted rate |
| Other services | |||
 Changelly | 15 min (20 for some coins) | Yes | 0.25% floating; dynamic on fixed |
 Exolix | 60 min | Not stated | Built into the quoted rate |
 FixedFloat | 10 min | Yes | 1% fixed, 0.5% floating |
 SideShift.ai | 15 min | Yes | Built into the quoted rate, no % published |
 StealthEX | Usually 15 to 30 min | Yes | Fixed fee per swap, no % published |
 Swapzone | Set by each partner | Yes | 0% Swapzone fee; partner fees in the rate |
Service by service
SimpleSwap
Self-custodial multi-source swap aggregator · since 2018SimpleSwap is a self-custodial multi-source swap aggregator: one custody model, 2,800+ swappable assets, routing across 20+ CEX and DEX liquidity providers.
- Fixed-rate window
- 20 min
- Floating rate
- Yes
- Fee, as stated
- From 0.2%, built into the quoted rate
- Aggregates 20+ CEX and DEX providers per order
- Fixed rate locked for 20 minutes
- Engine embedded in 6,000+ partner products
- You want one order routed across several liquidity sources
- You want a fixed rate held for 20 min
- You want to choose from 2,800+ listed assets
ChangeNOW
Instant exchange · since 2017ChangeNOW is an instant exchange with 1,500+ assets that pairs non-custodial swaps with an optional custodial product, ChangeNOW Pro, and a wider set of side tools such as payment links and limit orders.
- Fixed-rate window
- Lock window not stated
- Floating rate
- Yes
- Fee, as stated
- No single %, built into the quoted rate
- Optional custodial account with internal transfers
- Payment links and limit orders
- 13,500+ Trustpilot reviews (October 2026)
- You want to choose from 1,500+ listed assets
- You swap Monero (XMR)
- You also want to buy crypto with fiat through partners
Changelly
Instant exchange · since 2015Changelly is an instant exchange operating since 2015. It lists 1,000+ to 1,200+ assets, offers fixed and floating rates, with a fixed rate held for 15 min (20 for some coins) and states its fee as 0.25% floating; dynamic on fixed.
- Fixed-rate window
- 15 min (20 for some coins)
- Floating rate
- Yes
- Fee, as stated
- 0.25% floating; dynamic on fixed
- Operating since 2015
- Published 0.25% fee on floating swaps
- Fiat via 15+ providers
- You want a fixed rate held for 15 min (20 for some coins)
- You want to choose from 1,000+ to 1,200+ listed assets
- You swap Monero (XMR)
Exolix
Liquidity aggregator · since 2018Exolix is a liquidity aggregator operating since 2018. It lists 435+ assets and offers fixed rates, with a fixed rate held for 60 min.
- Fixed-rate window
- 60 min
- Floating rate
- Not stated
- Fee, as stated
- Built into the quoted rate
- Fixed rate held for 60 minutes
- No maximum exchange limit
- Liquidity from 50+ centralized exchanges
- You want one order routed across several liquidity sources
- You want a fixed rate held for 60 min
- You want to choose from 435+ listed assets
FixedFloat
Instant exchange · since 2018FixedFloat is an instant exchange operating since 2018. It offers fixed and floating rates, with a fixed rate held for 10 min and states its fee as 1% fixed, 0.5% floating.
- Fixed-rate window
- 10 min
- Floating rate
- Yes
- Fee, as stated
- 1% fixed, 0.5% floating
- Bitcoin Lightning Network swaps
- 14 site languages
- You want a fixed rate held for 10 min
- You swap Monero (XMR)
- You want a stated fee: 1% fixed, 0.5% floating
SideShift.ai
Instant exchange · since 2018SideShift.ai is an instant exchange operating since 2018. It lists 200+ to 300+ assets and offers fixed and floating rates, with a fixed rate held for 15 min.
- Fixed-rate window
- 15 min
- Floating rate
- Yes
- Fee, as stated
- Built into the quoted rate, no % published
- Integrated into Trezor Suite, Edge and Bitcoin.com wallets
- Own XAI token with referral rewards
- Telegram bot for swaps
- You want a fixed rate held for 15 min
- You want to choose from 200+ to 300+ listed assets
StealthEX
Instant exchange · since 2018StealthEX is an instant exchange operating since 2018. It lists 2,000+ assets and offers fixed and floating rates, with a fixed rate held for usually 15 to 30 min.
- Fixed-rate window
- Usually 15 to 30 min
- Floating rate
- Yes
- Fee, as stated
- Fixed fee per swap, no % published
- No upper limit on swap amounts
- A floating swap fails if the rate moves more than 5%
- Card purchases via partners
- You want a fixed rate held for usually 15 to 30 min
- You want to choose from 2,000+ listed assets
- You swap Monero (XMR)
Swapzone
Exchange aggregator · since 2019Swapzone is an exchange aggregator operating since 2019. It lists 1,000+ to 3,000+ assets, offers fixed and floating rates and states its fee as 0% Swapzone fee; partner fees in the rate.
- Fixed-rate window
- Set by each partner
- Floating rate
- Yes
- Fee, as stated
- 0% Swapzone fee; partner fees in the rate
- Compares offers from 15+ instant exchanges, incl. SimpleSwap and ChangeNOW
- KYC frequency label on each offer
- No fee of its own
- You want to compare offers from several exchanges in one window
- You want to choose from 1,000+ to 3,000+ listed assets
- You swap Monero (XMR)
Compare with SimpleSwap
Questions
Which swap services offer a fixed rate?
All 8 services in this directory: SimpleSwap, ChangeNOW, Changelly, FixedFloat, Exolix, StealthEX, SideShift.ai, Swapzone.
Does SimpleSwap offer a fixed rate?
Yes. SimpleSwap holds a fixed rate for 20 min.
Does ChangeNOW offer a fixed rate?
Yes. ChangeNOW offers fixed and floating rates; the lock window is not stated.
How long is a fixed rate held?
It depends on the service. SimpleSwap: 20 min; ChangeNOW: lock window not stated; Changelly: 15 min (20 for some coins); FixedFloat: 10 min; Exolix: 60 min; StealthEX: usually 15 to 30 min; SideShift.ai: 15 min; Swapzone: set by each partner.
What is the difference between a fixed and a floating rate?
A floating rate settles at execution, so the amount you receive can move with the market. A fixed rate locks the price for a set window in exchange for a slightly wider spread.