# Using metric prefixes

In order to write very large or very small numbers, you can use symbols from the metric system, such as 1k for 1000.

List of metric prefixes and their descriptionList of metric prefixes and their description

| Symbols | Name | Description |
| --- | --- | --- |
| T | Tera | 1T = 1000000000000 |
| G | Giga | 1G = 1000000000 |
| M | Mega | 1M = 1000000 |
| k | Kilo | 1k = 1000 |
| h | Hecto | 1h = 100 |
| da | Deca | 1da = 10 |
| d | Deci | 1d = 0.1 |
| c | Centi | 1c = 0.01 |
| m | Milli | 1m = 0.001 |
| µ | Micro | 1µ = 0.000001 |
| n | Nano | 1n = 0.000000001 |
| p | Pico | 1p = 0.000000000001 |