USDCvsUSDG
USD Coin vs Global Dollar — side-by-side comparison of supply, chains, backing, and peg data.
Side-by-side
USDC — USD Coin
USDG — Global Dollar
30-day peg stability dotted line = target · both charts share one scale
What the last 30 days show
Over the last 30 days USDC supply moved -1.6% and USDG +17.6% — USDG grew faster. USDC held the tighter band: worst deviation 5 bps against 33 bps.
Key differences
- USDC is roughly 21.1× larger than USDG by USD circulation value ($72.21B vs $3.42B).
- USDC ranks #2 while USDG ranks #7 among all tracked stablecoins.
- Both are pegged to the same currency (USD), so they compete directly for the same use cases.
- Both are fiat-backed stablecoins, so the mechanism is not what separates them.
- Reserves differ — USDC holds cash & t-bills, USDG holds cash reserves (paxos).
- USDC is deployed on 154 chains — much broader coverage than USDG's 6.
- Primary chain differs — most USDC supply lives on Ethereum, while most USDG supply is on X Layer.
Full comparison table
| Metric | USDC | USDG |
|---|---|---|
| USD circulation value | $72.21B | $3.42B |
| Rank (by USD value) | #2 | #7 |
| Peg | USD | USD |
| Mechanism | fiat-backed | fiat-backed |
| Backing | Cash & T-bills | Cash reserves (Paxos) |
| Chains deployed | 154 | 6 |
| Primary chain | Ethereum | X Layer |
| Issuer | Circle | Paxos Trust Company |
| CoinGecko | View → | View → |
Frequently Asked Questions
What's the main difference between USDC and USDG?
Both track USD, so they compete for the same use cases. USDC holds cash & t-bills; USDG holds cash reserves (paxos). USDC ranks #2 by USD value and USDG ranks #7.
Which is bigger, USDC or USDG?
USDC is larger, with $72.21B in circulation vs $3.42B for USDG. That's roughly 21.1× the size.
Is USDC safer than USDG?
Neither is inherently safer. Safety turns on reserve composition, issuer transparency, redemption rights and regulatory oversight — none of which this page audits. Both use a fiat-backed model, so the difference sits in the issuer and the reserves rather than the design. Read each issuer's most recent reserve attestation before choosing.
Can I convert between USDC and USDG?
Yes. USDC and USDG 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 USDC or USDG?
The right choice depends on your use case. Consider: which chain do you need? USDC is available on 154 chains and USDG on 6. 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.