> For the complete documentation index, see [llms.txt](https://wiki.havenprotocol.org/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://wiki.havenprotocol.org/overview/denomination.md).

# Denomination

#### The Basics

A denomination is a proper description of a currency amount. It is oftentimes a sub-unit of the currency. For example, traditionally a cent is 1/100th of a particular unit of currency.).

Haven denomination names add SI prefixes after dropping the initial "mo" for ease of use. Actually, the smallest unit of Haven is 1 piconero (0.000000000001 XMR).

#### Denominations of Haven

\|------------+----------+-------------------|

|                                        Name |  Base 10 |         Amount |
| ------------------------------------------: | :------: | -------------: |
|                                    piconero |  10^-12  | 0.000000000001 |
|                                    nanonero |   10^-9  |    0.000000001 |
|                                   micronero |   10^-6  |       0.000001 |
|                                   millinero |   10^-3  |          0.001 |
|                                   centinero |   10^-2  |           0.01 |
|                                    decinero |   10^-1  |            0.1 |
| ============+==========+=================== |          |                |
|                                   **haven** | **10^0** |          **1** |
| ============+==========+=================== |          |                |
|                                    decanero |   10^1   |             10 |
|                                   hectonero |   10^2   |            100 |
|                                    kilonero |   10^3   |          1,000 |
|                                    meganero |   10^6   |      1,000,000 |
| ------------+----------+------------------- |          |                |

#### In-depth Information

Support for input using SI prefixes was [added to the Haven codebase](https://github.com/haven-project/haven/pull/1826) on March 3, 2017 by [Havenmooo](https://github.com/havenmooo-haven). The smallest unit of Haven (10^-12 XMR) was originally called a tacoshi in honor of user [Tacotime](https://bitcointalk.org/index.php?action=profile;u=19270), an early Haven contributor and was later renamed for ease of use and consistancy.

#### Havend Implementation

The smallest fraction of Haven in the current havend implementation is also known as the @atomic-unit, which is currently one piconero.