SMS Length & Segment Calculator
Check SMS character count, encoding (GSM vs Unicode), and how many segments your message will use.
SMS Segment Calculator & GSM-7 Counter
Stop wasting money on multi-part SMS messages. The SMS Length Calculator counts characters accurately according to GSM-03.38 standards. It detects if your message contains Unicode characters (like emojis or special accents) that force the encoding into UCS-2, drastically reducing the character limit from 160 to 70 per segment. Use this to optimize your marketing copy and reduce Twilio/SNS costs.
How it Works
- 1Type your SMS message.
- 2The tool analyzes every character against the GSM-7 charset.
- 3It calculates the total usage and number of segments (parts).
- 4If Unicode is detected, it warns you and shows the reduced limits.
- 5See which specific characters are triggering the split.
Key Features
Common Use Cases
Frequently Asked Questions
Everything you need to know about using this tool effectively and securely.
Q.Why did my 71 character message become 2 segments?
If you use a single Unicode character (like an emoji 🚀), the entire message switches to UCS-2 encoding, where the limit drops to 70 characters per segment. Your 71 characters required a second segment.
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