How is the usage calculated

Usage is calculated by translated characters per month. After each month, the usage is reset to 0 and you have your monthly quota available again.

When translating the same content multiple times the characters are not counted repeatedly. In other words, if your content is static, it does not matter how many times the content is translated, only the first time is counted.

Please note that if the content within a <T> component changes, the whole content will be translated again, and therefore all characters will be counted again. One example where this might have a negative impact on your usage is when you have dynamic content inside of a sentence, like so:

<T>You have {count} unread messages in your inbox</T>

In this case, whenever count changes, the whole sentence will be translated again. If you have a lot of traffic on your website, this is something to look out for.