Text Size Calculator
See the size of your text in bytes and kilobytes, with characters and words instantly as you type. No signup, works on any device.
Result
| UTF-16 size | 0 bytes |
| Bits (UTF-8) | 0 bits |
UTF-8 is what most files and web pages use. Emoji and non-Latin characters take more than one byte in UTF-8.
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This text size calculator shows the size of your text in bytes and kilobytes, with characters and words as you type, directly in your browser. Paste or write your text and the figures update live. No account, no install, so you can analyse text on any device in seconds.
How to Use the Text Size Calculator Step by Step
- Paste or type your text. Drop your text into the input box, or type directly. The figures begin updating from the first character.
- Read the results. The results show the size of your text in bytes and kilobytes, with characters and words, updating live as you type or edit.
- Explore the details. Look through the cards and any table to see the full breakdown for your text.
- Edit and watch it update. Change your text and the figures update instantly, so they always match what you have written.
- Use the results. Read the figures directly for your task, with no button to press.
What the Text Size Calculator Measures and How
The Text Size Calculator shows the size of your text in bytes and kilobytes, with characters and words. It analyses your text as you type and presents the results live, so the figures are always current. It measures the byte size of your text in UTF-8, the encoding most files and web pages use, and shows it in bytes and kilobytes, along with the UTF-16 size, bits, characters and words.
Text size in bytes matters for storage, uploads, message limits and encoding. Because characters like emoji and non-Latin letters take more than one byte in UTF-8, the byte size can be larger than the character count, which the tool makes clear.
Everything is worked out in your browser as you type.
Because it runs on your device, your text is never uploaded. The results appear instantly and privately, with nothing leaving your device. The tool works the same on a phone, tablet or computer, with no account and no limit on how much text you can analyse.
What the Figures Mean
| Measure | What it shows | Note |
|---|---|---|
| Bytes (UTF-8) | Size in the common encoding | For storage and limits |
| Kilobytes | Bytes shown in KB | For larger text |
| UTF-16 / bits | Other size measures | For encoding needs |
| Characters / words | Length of the text | For context |
Who Uses This Tool
Pro Tips for Using the Text Size Calculator
Common Mistakes to Avoid
Related Tools You May Need Next
our Text Length Calculator, Character Counter and Word Counter measure text in related ways.
Frequently Asked Questions
How do I use the text size calculator?
Paste or type your text into the input box and the results appear instantly, showing the size of your text in bytes and kilobytes, with characters and words, updating live as you edit. There is no button to press: the figures refresh the moment you type. Read them directly for your task, and change your text to see how the figures respond. No account is required and there is no limit on how much text you can analyse.
What does the text size calculator measure?
It shows the size of your text in bytes and kilobytes, with characters and words. It measures the byte size of your text in UTF-8, the encoding most files and web pages use, and shows it in bytes and kilobytes, along with the UTF-16 size, bits, characters and words. The figures are worked out from your text as you type and presented together, so you get a clear picture of your text at a glance, updating live whenever you add, remove or change anything.
What do the figures mean?
Text size in bytes matters for storage, uploads, message limits and encoding. Because characters like emoji and non-Latin letters take more than one byte in UTF-8, the byte size can be larger than the character count, which the tool makes clear. Each figure is worked out a specific way, so reading them together gives a fuller picture than any single number. The tool lays out the results clearly so you can see what your text contains and use the figures for whatever you are working on.
Does it change my text?
No. The tool measures and reports figures about your text; it does not edit or alter it. Your text stays exactly as you typed it, and the figures simply describe it. If you want to change the text, you edit it yourself and watch the figures update to match your changes.
Is my text uploaded anywhere?
No. The analysis happens entirely in your browser, so your text is never sent to a server. The figures appear the instant you type, and nothing you write leaves your device. You can analyse sensitive or unpublished text knowing it stays on your own device.
Can I use it on my phone?
Yes. The tool runs in your browser and works the same on a phone, tablet or computer, with no app to install. Paste or type your text and the figures appear instantly. Because everything runs on your device, it is just as fast and private on mobile as on desktop, so you can analyse text anywhere.
Is there a limit on how much text I can check?
No. You can paste or type as much text as you like and the tool analyses all of it, updating the figures live. There is no account, no signup and no usage limit, so you can check a short note or a long document, as often as you need, at no cost.
Is the text size calculator free?
Yes, it is completely free with no account and no limit. You can analyse as much text as you like, on any device, at no cost. The tool runs in your browser, so there is nothing to install, and the figures appear instantly as you type, showing the size of your text in bytes and kilobytes, with characters and words.