Benchmark: luxon 3.2.1 vs datefns vs moment vs dayjs (formatting)

HTML Preparation code:

<script src="https://cdnjs.cloudflare.com/ajax/libs/dayjs/1.10.7/dayjs.min.js" integrity="sha512-bwD3VD/j6ypSSnyjuaURidZksoVx3L1RPvTkleC48SbHCZsemT3VKMD39KknPnH728LLXVMTisESIBOAb5/W0Q==" crossorigin="anonymous" referrerpolicy="no-referrer"></script>
<script src="https://cdn.jsdelivr.net/npm/luxon@3.2.1/build/global/luxon.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/date-fns/1.30.1/date_fns.min.js" referrerpolicy="no-referrer"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/moment.js/2.29.1/moment.min.js" integrity="sha512-qTXRIMyZIFb8iQcfjXWCO8+M5Tbc38Qi5WzdPOYZHIlZpzBHG3L3by84BBBOiRGiEb7KKtAOAs5qYdUiZiQNNQ==" crossorigin="anonymous" referrerpolicy="no-referrer"></script>

Script Preparation code:

window.__date__ = new Date();
window.__luxon__ = luxon.DateTime.fromJSDate(__date__);
window.__moment__ = moment(__date__);
window.__dayjs__ = dayjs(__date__);

Tests:

datefns
dateFns.format(__date__, 'YYYY/MM/DD');
luxon
__luxon__.toFormat('yyyy/MM/dd');
moment
__moment__.format('YYYY/MM/DD');
dayjs
__dayjs__.format('YYYY/MM/DD');

Historical Performance Data aggregated from 24 community runs

Desktop Results:

Chrome 17 runs

moment

2.0M/s

luxon

940K/s

datefns

922K/s

dayjs

515K/s

Fastest: moment (3.9x faster)

View exact numbers

✓ moment: 2,021,513 ops/sec
• luxon: 940,426 ops/sec
• datefns: 922,337 ops/sec
• dayjs: 515,072 ops/sec

Firefox 7 runs

moment

542K/s

datefns

484K/s

luxon

353K/s

dayjs

312K/s

Fastest: moment (1.7x faster)

View exact numbers

✓ moment: 541,502 ops/sec
• datefns: 484,291 ops/sec
• luxon: 352,736 ops/sec
• dayjs: 311,800 ops/sec

Results show median performance across all community submissions. Run this benchmark yourself to verify on your device.

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
datefns
luxon
moment
dayjs

Fastest: N/A

Slowest: N/A

Latest run results:

Run details: (Test run date: 2 months ago)

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/149.0.0.0 Safari/537.36

Browser/OS: Chrome 149 on Mac OS X 10.15.7

View result in a separate tab

moment

2.9M/s

datefns

2.0M/s

luxon

1.4M/s

dayjs

884K/s

View exact numbers

Test name	Executions per second
✓ moment	2,857,634 Ops/sec
datefns	2,002,791 Ops/sec
luxon	1,436,222 Ops/sec
dayjs	884,390 Ops/sec

Autogenerated LLM Summary (model llama3.2:3b, generated one year ago):

LLMs can make mistakes. Check important info.

**What is being tested?**

MeasureThat.net is testing the performance of four different date formatting libraries: Luxon, Datefns, Moment.js, and Day.js.

Each test case uses a specific date formatting function from each library, formatted as `YYYY/MM/DD`, to measure how fast they can execute. The benchmark aims to determine which library is the fastest in terms of execution speed.

**Options compared**

The options being compared are:

1. Luxon (version 3.2.1)
2. Datefns (version 1.30.1)
3. Moment.js (version 2.29.1)
4. Day.js

Each library has its own strengths and weaknesses, which I'll outline below.

**Pros and Cons**

* **Luxon**: Luxon is a modern date and time library that provides a robust API for formatting dates. Its performance is generally fast due to its native JavaScript implementation. However, it may require more setup compared to other libraries.
* **Datefns**: Datefns is another popular date formatting library that offers a simple and easy-to-use API. It's known for its speed and compatibility with various browsers. However, some users might find the API less intuitive than Luxon or Moment.js.
* **Moment.js**: Moment.js has been around for a long time and is widely used in web applications. Its performance is generally good, but it may be slower than newer libraries like Datefns and Luxon due to its larger size.
* **Day.js**: Day.js is a relatively new library that aims to provide fast and simple date formatting capabilities. It's gaining popularity quickly, especially among developers who prefer a lightweight solution.

**Libraries and their purposes**

1. **Luxon**: As mentioned earlier, Luxon provides a robust API for date and time operations. Its native JavaScript implementation makes it well-suited for modern web applications.
2. **Datefns**: Datefns is primarily designed for fast and simple date formatting capabilities. It's ideal for developers who need to format dates frequently in their application.
3. **Moment.js**: Moment.js is a widely used library that provides a comprehensive API for date and time operations, including formatting. However, its performance may be slower compared to newer libraries like Datefns and Luxon.
4. **Day.js**: Day.js aims to provide fast and lightweight date formatting capabilities, making it suitable for small projects or applications with limited resources.

**Special JavaScript features or syntax**

None of the test cases use any special JavaScript features or syntax that would affect the performance comparison.

**Alternatives**

If you're looking for alternative libraries, here are a few options:

1. **js-joda**: js-joda is another modern date and time library that provides similar functionality to Luxon.
2. **Date.js**: Date.js is an older library that provides basic date formatting capabilities. However, it may not be as fast or feature-rich as newer libraries like Datefns and Day.js.
3. **Backbone.Dates**: Backbone.Dates is a lightweight library that provides basic date formatting capabilities. It's designed for use with the Backbone.js framework but can be used independently.

In conclusion, MeasureThat.net's benchmark compares the performance of four popular date formatting libraries: Luxon, Datefns, Moment.js, and Day.js. The results suggest that Datefns is generally the fastest, followed closely by Luxon. However, the choice of library ultimately depends on your specific use case, performance requirements, and personal preference.

luxon 3.2.1 vs datefns vs moment vs dayjs (formatting) (version: 0)

Updated luxon

Comparing performance of: `datefns vs luxon vs moment vs dayjs`

Created: 3 years ago by: Guest

Go to the latest result

datefns

luxon

moment

dayjs

Historical Performance Data aggregated from 24 community runs

Desktop Results:

Chrome 17 runs

Firefox 7 runs

Suite status: <idle, ready to run>

Fastest: N/A

Slowest: N/A

Autogenerated LLM Summary (model llama3.2:3b, generated one year ago):

luxon 3.2.1 vs datefns vs moment vs dayjs (formatting) (version: 0)

Updated luxon

Comparing performance of: datefns vs luxon vs moment vs dayjs

Created: 3 years ago by: Guest

Go to the latest result

datefns

luxon

moment

dayjs

Historical Performance Data aggregated from 24 community runs

Desktop Results:

Chrome 17 runs

Firefox 7 runs

Suite status: <idle, ready to run>

Fastest: N/A

Slowest: N/A

Autogenerated LLM Summary (model llama3.2:3b, generated one year ago):

Related benchmarks

Comparing performance of: `datefns vs luxon vs moment vs dayjs`