Satoshi (sats) is 1/100,000,000 of a Bitcoin. To convert USD, divide your dollar amount by Bitcoin’s current price, then multiply by 100M. Example: If BTC is 60,000,10 ≈ 16,667 sats. Paybis’ USD to Satoshi guide simplifies this with real-time tools and explains why sats matter for microtransactions https://paybis.com/blog/usd-to-satoshi/ . Use their platform to buy fractional BTC instantly—no manual math. Pro tip: Track sats instead of whole coins; it’s psychologically easier to stack small amounts daily.