Benchmark: moment.js vs day.js vs date-fns set

HTML Preparation code:

<script src="https://cdn.jsdelivr.net/npm/dayjs/dayjs.min.js"></script>
<script src="https://cdn.jsdelivr.net/npm/dayjs/plugin/utc.js"></script>
<script src="https://cdn.jsdelivr.net/npm/dayjs/plugin/timezone.js"></script>
<script src="https://cdn.jsdelivr.net/npm/moment/moment.min.js"></script>
<script src="https://cdn.jsdelivr.net/npm/moment-timezone@0.5.48/builds/moment-timezone-with-data.min.js"></script>
<script src="https://cdn.jsdelivr.net/npm/date-fns/cdn.min.js"></script>

Script Preparation code:

var unix = 1724409214;

Tests:

momentjs
return moment(unix).set("hours", 0).set("minutes", 0).set("seconds", 0).set("milliseconds", 0);
dayjs
// dayjs.extend(window.dayjs_plugin_utc) // dayjs.extend(window.dayjs_plugin_timezone) return dayjs(unix).set("hours", 0).set("minutes", 0).set("seconds", 0).set("milliseconds", 0);
date-fns
return dateFns.set(new Date(unix), { hours: 0, minutes: 0, seconds: 0, milliseconds: 0 })

Historical Performance Data aggregated from 6 community runs

Desktop Results:

Chrome 6 runs

date-fns

2.0M/s

momentjs

1.1M/s

dayjs

621K/s

Fastest: date-fns (3.2x faster)

View exact numbers

✓ date-fns: 1,998,179 ops/sec
• momentjs: 1,122,823 ops/sec
• dayjs: 621,046 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
momentjs
dayjs
date-fns

Fastest: N/A

Slowest: N/A

Latest run results:

Run details: (Test run date: 9 months ago)

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/26.0.1 Safari/605.1.15

Browser/OS: Safari 26 on Mac OS X 10.15.7

View result in a separate tab

date-fns

4.0M/s

momentjs

1.3M/s

dayjs

1.2M/s

View exact numbers

Test name	Executions per second
✓ date-fns	4,018,856 Ops/sec
momentjs	1,291,475 Ops/sec
dayjs	1,173,859 Ops/sec

moment.js vs day.js vs date-fns set (version: 1)

Comparing performance of: `momentjs vs dayjs vs date-fns`

Created: one year ago by: Guest

Go to the latest result

momentjs

dayjs

date-fns

Historical Performance Data aggregated from 6 community runs

Desktop Results:

Chrome 6 runs

Suite status: <idle, ready to run>

Fastest: N/A

Slowest: N/A

moment.js vs day.js vs date-fns set (version: 1)

Comparing performance of: momentjs vs dayjs vs date-fns

Created: one year ago by: Guest

Go to the latest result

momentjs

dayjs

date-fns

Historical Performance Data aggregated from 6 community runs

Desktop Results:

Chrome 6 runs

Suite status: <idle, ready to run>

Fastest: N/A

Slowest: N/A

Related benchmarks

Comparing performance of: `momentjs vs dayjs vs date-fns`