Sort Vietnamese Words & Names Alphabetically Online

Q: Why not sort in the database?

Many databases (SQLite / D1, default MongoDB, binary collations) sort by code point, which puts Đ after Z and accented letters at the end. Store the sort_key from action=key to sort correctly anywhere.

Q: What is the tone order?

ngang, huyền, hỏi, ngã, sắc, nặng: the order used by Vietnamese dictionaries and the CLDR / ICU Vietnamese collation (ba, bà, bả, bã, bá, bạ).

Q: Are "hoà" and "hòa" the same?

Yes: tones are compared per syllable, so both tone placements sort and compare equal; action=normalize rewrites them in one style.

Sort Vietnamese lists in dictionary order (a ă â, d đ, tones), compare strings, make DB sort keys, group by letter, sort names by given name.

Result

Press “Run” to see the result.

Send a list (items, or one item per line in text) and get it sorted in Vietnamese dictionary order: the letters a ă â b c d đ e ê g h i k l m n o ô ơ p q r s t u ư v x y, then the tones ngang < huyền < hỏi < ngã < sắc < nặng, then case: the same order as Vietnamese dictionaries and the CLDR "vi" collation, unlike the byte order of databases (where "Đ" sorts after "Z") or the long-standing glibc vi_VN bugs. Tones are compared per syllable, so "hoà" and "hòa" are equal; numbers sort naturally (item 9 before item 10); ignore_tones compares letters only; case_sensitive, desc and unique are available.

by=given_name sorts personal names the way Vietnamese class and staff lists do (given name, then family name, then middle name: An before Bình whatever the family name); objects are sorted by a field. Other actions: compare (a, b → -1 / 0 / 1), key (a byte-sortable sort_key to store in a database column with binary collation, and an accent-free search_key), group (by first letter, Đ separate from D, for contact lists) and normalize (tone mark placement old / new style: hòa ↔ hoà, thúy ↔ thuý).

Up to 10,000 items per request; pure computation, nothing stored.

Use this in your code

curl -X POST "https://apibox.io.vn/v1/vn-sort" \
  -H "Authorization: Bearer YOUR_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{"items":["Đức","Dũng","anh","ăn","An","bà","ba","bá","item 10","item 9"]}'

const res = await fetch('https://apibox.io.vn/v1/vn-sort', {
  method: 'POST',
  headers: {
    Authorization: 'Bearer YOUR_API_KEY',
    'Content-Type': 'application/json',
  },
  body: JSON.stringify({
    "items": [
      "Đức",
      "Dũng",
      "anh",
      "ăn",
      "An",
      "bà",
      "ba",
      "bá",
      "item 10",
      "item 9"
    ]
  }),
});
const data = await res.json();
console.log(data);

import requests

res = requests.post(
    "https://apibox.io.vn/v1/vn-sort",
    headers={"Authorization": "Bearer YOUR_API_KEY"},
    json={"items": ["Đức", "Dũng", "anh", "ăn", "An", "bà", "ba", "bá", "item 10", "item 9"]},
    timeout=30,
)
print(res.json())

<?php
$ch = curl_init('https://apibox.io.vn/v1/vn-sort');
curl_setopt_array($ch, [
    CURLOPT_RETURNTRANSFER => true,
    CURLOPT_CUSTOMREQUEST => 'POST',
    CURLOPT_HTTPHEADER => ['Authorization: Bearer YOUR_API_KEY', 'Content-Type: application/json'],
    CURLOPT_POSTFIELDS => '{"items":["Đức","Dũng","anh","ăn","An","bà","ba","bá","item 10","item 9"]}',
]);
$response = curl_exec($ch);
print_r(json_decode($response, true));

API documentation → Get a free API key

FAQ

Why not sort in the database?

Many databases (SQLite / D1, default MongoDB, binary collations) sort by code point, which puts Đ after Z and accented letters at the end. Store the sort_key from action=key to sort correctly anywhere.

What is the tone order?

ngang, huyền, hỏi, ngã, sắc, nặng: the order used by Vietnamese dictionaries and the CLDR / ICU Vietnamese collation (ba, bà, bả, bã, bá, bạ).

Are "hoà" and "hòa" the same?

Yes: tones are compared per syllable, so both tone placements sort and compare equal; action=normalize rewrites them in one style.