# Convert a Windows file path to a Unix path

Use forward slashes and drop a drive letter or leading ./.

Canonical: https://1loc.dev/string/convert-a-windows-file-path-to-unix-path/
Version: 1.0.0
Runtime: JavaScript · Node.js 22 / modern browsers
Verification: Local fixtures; no external services
Updated: 2026-10-28

## Implementation

```javascript
function toUnixPath(path) { return path.replace(/[\\/]+/g, '/').replace(/^([a-zA-Z]+:|\.\/)/, ''); }
```

## Input

```json
"C:\\Users\\ana\\report.pdf"
```

## Expected output

```json
"/Users/ana/report.pdf"
```

## Edge case

Input:
```json
".\\docs\\readme.md"
```
Output:
```json
"docs/readme.md"
```

## Limits

- The drive letter is discarded, not mapped to a mount point.

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/convert-a-windows-file-path-to-unix-path.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: Curated implementation; explicit input contract, edge case and limits. Original MDX retained as inert source evidence.