> For the complete documentation index, see [llms.txt](https://postman-v2.guides.gov.sg/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://postman-v2.guides.gov.sg/billing/message-segment-calculator.md).

# Message segment calculator

## What is a message segment? <a href="#what-is-an-sms-segment" id="what-is-an-sms-segment"></a>

If a message is over 160 characters long (including header and footer), it gets split into separate message segments. Each message segment includes up to 160 GSM characters, including the header and footer.

<figure><img src="https://862051585-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2Fl3mC1ibWq8HG4BKl4qlL%2Fuploads%2FIDvD2HMRdpxWk9xTULzM%2Fbilling-msg-cal.png?alt=media&amp;token=080d707f-1dfc-4d0d-9a83-10d9309691a6" alt=""><figcaption></figcaption></figure>

## How do I calculate message segments?

The Postman team has created a message segment calculator specifically to help ease this calculation process. Use this calculator to count the number of segments in a message and identify any invalid characters.

{% embed url="<https://message-segment-calculator.postman.gov.sg/>" %}


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