> ## Documentation Index
> Fetch the complete documentation index at: https://docs.hedera.com/llms.txt
> Use this file to discover all available pages before exploring further.

# HBAR

<AccordionGroup>
  <Accordion title="What are the official HBAR cryptocurrency denominations?">
    The official [HBAR](/native/fundamentals/hbars) cryptocurrency denominations include tinybar (the smallest unit, where 1 HBAR = 100,000,000 tinybars), microbar, millibar, and HBAR. These denominations allow for precise transaction amounts and fee calculations.
  </Accordion>
</AccordionGroup>