Tool free SMS.is
Calculator and SMS character counter
Check how many characters you have your SMS, how many parts will occupy, and if you use coding GSM-7 or Unicode UCS-2 before sending it.
Online calculator
Account characters SMS in real time
Enter your message, and reviews instantly encoding detected, the parties SMS, the characters are consumed, and the remaining space.
Standard SMS GSM-7
An SMS with characters GSM-7 can hold up to 160 characters when it is sent as a simple message.
SMS Unicode UCS-2
If the message contains emojis or characters outside of GSM-7, the usual limit drops to 70 units by simple SMS.
Extension to GSM-7
Symbols such as €, ^, {, }, [, ], ~, | and \ belong to the extension GSM-7 and consume two positions.
SMS concatenated
When the text exceeds the limit of a part, is divided into several parts SMS with a header technique of concatenation.
Message analysis
Detailed breakdown of characters
Check what characters belong to GSM-7 basic, which used extension to GSM-7 and with what force the Unicode UCS-2.
Escribe un mensaje para ver el desglose.
Unicode code point hex
Escribe un mensaje para ver los puntos de código.
Technical reference
GSM-7, Unicode, and special characters
See the legend and the tables of characteristics in order to understand why changes the length of an SMS.
Legend of the analysis
Game character basic GSM-7
These characters tend to keep the SMS encoding GSM-7.
Extension to GSM-7
These characters remain GSM-7, but consume two positions within the message.
Examples of emojis
The emojis are generally activate the Unicode UCS-2 and reduces the available length by.
Examples of Unicode characters
Some symbols, alphabets and special characters do not belong to GSM-7 and make the SMS use UCS-2.
Length SMS
Why change the length of an SMS
The actual length of an SMS depends not only on the visible number of letters. It also influences the encoding used and the type of characters included in the message.
Characters GSM-7
The alphabet GSM-7 includes letters, numbers, and many signs in common. If all the text belongs to this set, the SMS takes advantage of the standard limit of 160 characters.
Characteristics of extension
Some symbols are sent with an escape character. That's why, though visually occupy a single position, technically consume two within the SMS.
Unicode and emoji
When a character that is not compatible with GSM-7, the message goes to UCS-2. This reduces the space available and may increase the parts SMS.
Concatenated messages
If the text exceeds the one hand, the operator divides it into several parts SMS. Each party reserves space for the technical information that allows you to recompose the message.
Calculate to send
Optimize your SMS before sending it
When you have the wrapped text, you can send campaigns, SMS, SMS gateway integration in your systems or check rates with SMS.is.
Good practices
Tips for preparing for SMS messages
Before launching a campaign, check the length, the clarity of the text and the characters that can increase the number of parts.
Clear message
Prioritizes a main idea and avoids unnecessary phrases.
Emojis with care
Avoid them if you need to maximize characters or to control costs per part.
Check symbols
Checks accents, special signs and characters of extension GSM-7.
Short links
Use URLs short when the goal is to bring traffic to a page.
Test before
Check the final text before it is sent to the entire database.
Segment better
Adapts the message to the public to improve response and conversion.
Optimize your SMS before sending it
Calculates the length of the message, adjust the content and prepare campaigns SMS more efficient with SMS.es.
