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Onchain Tools Crypto unit converter
1 XMR = 1,000,000,000,000 piconero, and 1 piconero = 0.000000000001 XMR. Convert any amount with the live converter above, or see the piconero to xmr or xmr to piconero tables.
The atom of Monero (XMR) — its smallest unit — is the piconero: 1,000,000,000,000 piconero to every XMR, with nothing finer recognized anywhere on the network. A balance or a payment involving a fraction of a piconero simply cannot exist on the ledger.
When an amount is too small to write comfortably as decimals of a XMR, piconero is how you state it — transaction fees being the usual example. Monero divides more finely than most major coins, and that precision keeps even very small privacy-preserving payments exact rather than rounded. Wallets generally display XMR, but underneath they are counting piconero.
The name is plain metric arithmetic: the prefix pico- attached to monero. Pico- denotes one trillionth, so a piconero is accordingly 0.000000000001 XMR. Monero itself arrived in 2014 as a privacy-focused coin, using ring signatures and stealth addresses to obscure senders and recipients.
A trillionfold conversion leaves plenty of room to land the decimal point one place off. Type a figure into the converter in whichever unit you hold, and the precise equivalent appears — exact arithmetic either way, nothing counted by hand.