USDGvsUSDD
Global Dollar vs USDD — side-by-side comparison of supply, chains, backing, and peg data.
Side-by-side
USDG — Global Dollar
USDD — USDD
30-day peg stability dotted line = target · both charts share one scale
What the last 30 days show
Over the last 30 days USDG supply moved +17.6% and USDD +7.9% — USDG grew faster. USDD held the tighter band: worst deviation 29 bps against 33 bps.
Key differences
- USDG is roughly 2.3× larger than USDD by USD circulation value ($3.42B vs $1.51B).
- USDG ranks #7 while USDD ranks #13 among all tracked stablecoins.
- Both are pegged to the same currency (USD), so they compete directly for the same use cases.
- USDG is a fiat-backed stablecoin; USDD is crypto-backed. Different mechanism, different failure modes.
- Reserves differ — USDG holds cash reserves (paxos), USDD holds algo + trx collateral.
- Chain coverage is comparable: USDG on 6 chains, USDD on 4.
- Primary chain differs — most USDG supply lives on X Layer, while most USDD supply is on Tron.
Full comparison table
| Metric | USDG | USDD |
|---|---|---|
| USD circulation value | $3.42B | $1.51B |
| Rank (by USD value) | #7 | #13 |
| Peg | USD | USD |
| Mechanism | fiat-backed | crypto-backed |
| Backing | Cash reserves (Paxos) | Algo + TRX collateral |
| Chains deployed | 6 | 4 |
| Primary chain | X Layer | Tron |
| Issuer | Paxos Trust Company | TRON DAO Reserve |
| CoinGecko | View → | View → |
Frequently Asked Questions
What's the main difference between USDG and USDD?
Both track USD, so they compete for the same use cases. USDG holds cash reserves (paxos); USDD holds algo + trx collateral. USDG ranks #7 by USD value and USDD ranks #13.
Which is bigger, USDG or USDD?
USDG is larger, with $3.42B in circulation vs $1.51B for USDD. That's roughly 2.3× the size.
Is USDG safer than USDD?
Neither is inherently safer. Safety turns on reserve composition, issuer transparency, redemption rights and regulatory oversight — none of which this page audits. USDG uses a fiat-backed model; USDD uses a crypto-backed one. Read each issuer's most recent reserve attestation before choosing.
Can I convert between USDG and USDD?
Yes. USDG and USDD both trade on major centralized and decentralized exchanges. Since both track USD, the exchange rate is typically very close to 1:1. Direct swap protocols on Ethereum, Solana, and other chains offer the tightest spreads.
Should I choose USDG or USDD?
The right choice depends on your use case. Consider: which chain do you need? USDG is available on 6 chains and USDD on 4. What backing do you prefer? What's your integration surface (exchanges, DeFi protocols, payment providers)? Both have deep liquidity, so market cap alone shouldn't decide it.