The Text.lk SMS Units Calculator is a tool that helps you calculate SMS length, encoding type, and message segments to understand how many SMS units your message will consume.

It analyzes your message characters, detects GSM7 or Unicode encoding, and calculates how many SMS parts (segments) are required to send your message.

• 7-bit (GSM-7) encoding supports standard Latin characters and allows up to 160 characters per SMS.
• Unicode (UCS-2) supports global languages and emojis but reduces the limit to 70 characters per SMS due to larger encoding size.

SMS character count directly affects both cost and message delivery. Standard SMS messages are limited to 160 characters (or 70 characters for Unicode). When messages exceed these limits, they are split into multiple parts, and each part is charged separately. This can increase costs and affect how your message is delivered, so keeping messages optimized is important.

Yes. When a message exceeds the single SMS limit, it is split into multiple segments, and each segment is billed separately. This can significantly increase costs, especially in bulk messaging campaigns. Optimizing message length helps reduce unnecessary expenses.

Yes. The Text.lk SMS Calculator helps identify convertible characters and allows you to optimize your message to GSM7 where possible to reduce SMS costs.

Yes. Longer messages or Unicode messages may be split into multiple SMS units, increasing the total cost.

The SMS calculator helps you understand how your message will be sent before you actually send it. It shows character count, encoding type, and how many SMS segments will be used. This allows you to optimize messages, avoid unnecessary multipart SMS charges, identify special characters and improve message for better ROI and deliverability.

Yes. Emojis automatically switch the message to Unicode encoding, which reduces the character limit from 160 to 70 per SMS. This means your message may be split into more parts, increasing cost. That’s why it’s important to use emojis carefully in SMS campaigns.

To keep messages within one SMS, avoid unnecessary special characters and emojis. Try to stay under 160 characters for GSM-7 messages or 70 characters for Unicode. You can also use the SMS Length Calculator to preview how your message will be split before sending.