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Snabbit

String Length Calculator

Measure string length in characters, code units and UTF-8 bytes.

Text Tools Runs in your browser

How do you find the length of a string?

Finding a string length means measuring how many units it contains. Snabbit reports four useful measures: visible characters (Unicode code points), characters without spaces, UTF-16 code units, and UTF-8 bytes — so developers can match whatever a database or API expects. It calculates locally in your browser, so your string never leaves your device.

How to use the String Length

  1. 1 Type or paste your string into the input box.
  2. 2 The length report appears instantly.
  3. 3 Read the character, code-unit and byte lengths.
  4. 4 Copy the figures if you need them.

What you can use it for

  • Checking a value against a database column limit.
  • Validating input length in an API contract.
  • Measuring byte size of a token or key.
  • Debugging why a string length looks wrong in code.

Frequently asked questions

Why are there several length numbers?
A string can be measured by visible characters, UTF-16 code units (what JavaScript .length returns) or raw UTF-8 bytes. They differ for emoji and accented characters, so all are shown.
Which length should a database field use?
It depends on the column type. Byte-limited columns care about UTF-8 bytes, while character-limited columns care about code points. The report lists both so you can pick the right one.
Does it handle emoji correctly?
Yes. An emoji counts as one visible character but uses multiple UTF-16 units and UTF-8 bytes, and every measure reflects that. It all runs in your browser.

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