How to Send a Text Message Online: Full Guide (SMS Meaning, Limits)

To send a message online, use a phone-linked web messenger, an online SMS sender, or a business SMS platform. One SMS holds 160 GSM-7 characters or 70 Unicode characters. Longer texts split into parts of 153 or 67 characters, and many senders count each part as a separate message.

What does it mean to send a message online

Sending a message online means writing and delivering a text from a computer or web page instead of a phone keypad. The recipient may get a normal SMS or a chat-app message, depending on the tool.

SMS vs online/web SMS vs chat apps

• Carrier SMS: a text from one phone number to another over the mobile network.

• Online SMS (web SMS): you type on a web page or dashboard, a service hands the text to the mobile network, and the recipient gets an ordinary SMS. See how online SMS works.

• Chat apps: WhatsApp, Telegram and similar apps send data over the internet. Both people need the same app.

What SMS stands for and how it works

SMS stands for Short Message Service. That is the SMS meaning and the full form of SMS, and "short" is literal: one message is capped at 140 bytes. For more on the term, see the full form and meaning of SMS.

The first SMS was sent on 3 December 1992. Neil Papworth, a Sema Group engineer, sent "Merry Christmas" from a computer to Vodafone's Richard Jarvis (Vodafone). So the first text message was sent from a computer, not a phone.

SMS travels over the mobile network, not the internet. A chat-app message needs an internet connection; a plain SMS does not.

Ways to send a text message online or from a computer

There are three routes: your phone's own messaging app on the web, an online SMS sender, or a business SMS or API platform. Choose by purpose: personal chat, a one-off text, or automated messages.

From a phone's own messaging app on the web

This links your computer to the phone you already use. Messages still go out from your phone number.

• Android (Google Messages): On your computer, open messages.google.com/web. On your phone, open Google Messages, tap your account menu, then Device Pairing. Use the same Google Account on both, and confirm the matching emoji on each screen. No QR code is involved. Source: Google Messages Help, checked 2026-11-12.

• Other phones: Other phone makers offer their own computer-linking features. Check your phone's messaging settings.

Through an online/web SMS sender

An online SMS sender is a website where you enter a number and a message, and the service delivers it as an SMS. It suits a one-off text when your phone is out of reach. Check whether the recipient sees your number or a shared one, how the service counts message parts, and which countries it reaches.

Send only to people who expect your text. Anonymous, prank or bomber texting is abuse, and this guide does not help with it.

Through a business SMS/API platform

A business platform sends texts at volume or on a trigger: one-time passcodes, appointment reminders, delivery alerts. You use a dashboard or connect your software through an API. Many platforms count messages by part, so the splitting rules below affect your cost.

How many characters fit in one SMS

One SMS holds 160 GSM-7 characters or 70 Unicode characters. Go over that SMS character count and the text splits. The character limit for SMS messages guide has the full reference.

GSM-7 (160 characters) vs Unicode (70 characters)

One SMS carries 140 bytes. GSM-7 packs each character into 7 bits, so 140 bytes hold 160 characters. Unicode (UCS-2) uses 16 bits per character, so the same bytes hold 70.

The encoding applies to the whole message, not to single characters. Any Urdu letter, emoji or smart punctuation switches the entire text to Unicode. Smart punctuation means the curly quotes, curly apostrophes and long dashes that word processors insert automatically. This is the Unicode SMS character limit at work: one character changes the limit for everything.

Example: a 100-character English message fits one SMS in GSM-7. Paste it from a document with one curly apostrophe and it becomes Unicode. At 100 characters it is now over 70, so it sends as 2 parts.

Why a message splits into multiple parts

A message splits when it passes the single-message limit. Each part carries a header that lets the receiving phone reassemble the text, so each part holds fewer characters: 153 in GSM-7, 67 in Unicode. A 161-character plain message becomes 2 parts, and so does a 71-character Urdu message. The recipient usually sees one joined message, but a sender that bills per message may count every part. Check your provider's rules.

The alphabet is defined in 3GPP TS 23.038 and the message format in 3GPP TS 23.040.

Where to get a business SMS sending tool

Start with your own mobile operator and ask whether it offers a business SMS service for your country. Then look at SMS API platforms such as Twilio, Vonage and Sinch, which provide an API and a dashboard. For any option, check the countries covered, how it counts message parts, sender ID rules and the documentation. Compare prices yourself against your own message volume.

WaSMS is another option you can compare on the same checklist. WaSMS is run by the same team as this site. Details are at wasms.net.

Check your message length before you send

Paste your text into the SMS character counter. It shows whether the message uses GSM-7 or Unicode, the character count and the number of parts. Run it on the final text, since smart punctuation often arrives when you paste from a document. More background is in more SMS basics guides.

Check your message's character count before sending

What does it mean to send a message online?

Sending a message online means writing and delivering a text from a computer or web page instead of a phone. FreeSMSGateway describes three routes: a phone-linked web messenger, an online SMS sender, and a business SMS or API platform. Carrier SMS travels over the mobile network, while chat apps use the internet.

What is the full form of SMS?

SMS stands for Short Message Service. It is a text carried by the mobile network rather than the internet. The first SMS was sent on 3 December 1992 and said Merry Christmas.

How many characters can one SMS message hold?

One SMS holds 160 GSM-7 characters or 70 Unicode characters. In a multipart message, each part holds 153 GSM-7 or 67 Unicode characters. These figures come from 3GPP TS 23.038 and TS 23.040.

Why did my text split into two or three messages?

Your text went over the single-message limit, 160 GSM-7 or 70 Unicode characters, so it was cut into parts of 153 or 67 characters. An Urdu letter, an emoji or a curly apostrophe also switches the whole text to Unicode and drops the limit to 70. The FreeSMSGateway SMS character counter shows the part count before you send.

Can I send a text message from my computer?

Yes. You can link your phone's messaging app to a computer, such as Google Messages for web on Android, use an online SMS sender, or use a business SMS platform with a dashboard or API. Which route fits depends on whether you want personal chat, a one-off text or automated messages.

Does using emoji reduce my SMS character limit?

Yes. One emoji switches the whole message to Unicode, so the single-message limit drops from 160 to 70 characters and each part of a longer message holds 67 instead of 153. Remove the emoji, and any other non-GSM-7 characters, to get the 160 limit back.

Sources

• Vodafone newsroom, first text message anniversary: https://www.vodafone.com/news/newsroom/technology/25-anniversary-text-message (checked 2026-10-03)

• 3GPP TS 23.038, alphabets and language-specific information: https://www.3gpp.org/DynaReport/23038.htm (checked 2026-10-03)

• 3GPP TS 23.040, technical realization of SMS: https://www.3gpp.org/DynaReport/23040.htm (checked 2026-10-03)

• Google Messages Help, Check your messages on your computer or Android tablet: https://support.google.com/messages/answer/7611075 (checked 2026-11-12)