Segment Calculator

Use this to accurately determine segment lengths for outbound texts.

Messaging Segment Calculator

SMS Message

Encoding
Automatic
GSM-7
UCS-2

Number of segments
1
Number of characters
0
Number of Unicode scalars
0
Message size
0 bits
Total size sent
0 bits

Message Parsed

Segments

Warnings

Legend

0xFFFF - Character block
0xFFFF - Non GSM-7 character block

Segment Lengths

Segment lengths are often impacted by special characters such as emojis or unicode. Use of bold or italics will also affect segment length. Typically, shorter messages are better. Without special characters, the first segment can be up to 160 characters. With special characters, the first segment can be 70 characters. Subsequent segments will be shorter, as the mobile carriers reserve a few characters per segment to "stitch" the message back together on the handset.