# Get the current quarter of a date

Map the month to a quarter from 1 to 4.

Canonical: https://1loc.dev/date-time/get-the-current-quarter-of-a-date/
Version: 1.0.0
Runtime: JavaScript · Node.js 22 / modern browsers
Verification: Local fixtures; no external services
Updated: 2026-10-28

## Implementation

```javascript
function quarter(date) { return Math.ceil((new Date(date).getUTCMonth() + 1) / 3); }
```

## Input

```json
"2026-10-28"
```

## Expected output

```json
4
```

## Edge case

Input:
```json
"2026-03-31"
```
Output:
```json
1
```

## Limits

- Calendar quarters; fiscal years that start in another month need an offset.

The lab validates types and size before calling this function. Add equivalent validation at your own trust boundary.

## Source and license

Original: https://github.com/phuocng/1loc/blob/14b481cf60dff1620ab1bb99a43b1f68068cdd9b/contents/get-the-current-quarter-of-a-date.mdx
Author: Nguyen Huu Phuoc and original contributors
Contributors: See original repository history
Source commit: 14b481cf60dff1620ab1bb99a43b1f68068cdd9b
Copyright (c) 2020 phuoc-ng
License: MIT — https://1loc.dev/licenses/
Maintainer: Oveyon
Modifications: Takes the date as an input instead of defaulting to now. Original MDX retained as inert source evidence.