Free Tool
SMS SegmentCalculator.
See exactly how your message will be billed before you send it. Live segment count, encoding detection, character-level breakdown, and MMS cost projection — built on the same engine our phone provider uses.
Message Input
Your Message
Characters Typed0
Attachments— makes it MMS
Encoding
Why This Matters
Real cost control
A single emoji can double your SMS bill by flipping the whole message to UCS-2. Catch it before you hit send.
Deliverability
Long messages get split and reassembled by carriers. Knowing your segment count keeps reassembly clean.
Compliance safety
Opt-out language and STOP keywords need to land in the first segment to count. Plan your message around it.