TRON
converter.
▸ /reference — denomination table
▸ /notes
int64 SUN — six decimal places. Tighter than Bitcoin (8) or Ethereum (18), but plenty deep for any real payment. SUN is named after Justin Sun, TRON's founder.▸ /faq
How many SUN in 1 TRX?
1 TRX equals 1,000,000 SUN. The SUN is the smallest indivisible unit on TRON — six decimal places, half as deep as Bitcoin's satoshi (which uses eight).
Why does TRON only have 6 decimals?
TRON chose 10⁶ at launch, presumably because USDT and many fiat-pegged tokens use 6 decimals already. The trade-off is less granular sub-cent precision than Bitcoin or Ethereum, which matters very little in practice for TRX itself.
Is mTRX a real unit?
milli-TRX is sometimes used informally for amounts around 0.001 TRX (= 1,000 SUN), but it's not a protocol-level unit. Most wallets just show TRX with up to 6 decimal places.
How does TRX compare to other smallest units?
BTC has 10⁸ satoshis per coin, ETH has 10¹⁸ wei per ether, SOL has 10⁹ lamports per SOL, and LTC has 10⁸ litoshis. TRX uses 10⁶ SUN — the lowest decimal count among major chains, but enough to handle any practical amount.