# Apple AirTag dimensions: Ø31.9 × 8.0 mm, 11 g, holder STL

> What are the AirTag dimensions?

- Category: Electronics › Consumer devices
- Kind: Modern device
- Basis: Apple tech specs (1st and 2nd generation)
- Page: https://xemstudio.com/objects/apple-airtag/ · JSON: https://xemstudio.com/api/geometry?object=apple-airtag · Plain text: https://xemstudio.com/objects/apple-airtag/sheet.txt
- License: dimension sheet CC BY 4.0 (Xem Studio); linked files under their publishers' licenses
- Use in every chat: add https://xemstudio.com/mcp as a connector (https://xemstudio.com/use-with-ai/)

## Overall (mm)

| length | width | height |
|---|---|---|
| 31.9 | 31.9 | 8.0 |

**Exact dimensions.** True size, with no printing tolerance added.

## Notes

- Ø31.9 mm (1.26 in), 8.0 mm (0.31 in) thick; 11 g (1st generation), 11.8 g (2nd generation, same size).
- Holders (free STL): pocket Ø32.2 × 8.2 with a 0.6 mm snap lip; print in PETG or TPU so the lip flexes. Keep metal away from the face for range.

## Sizes

| generation | diameter_mm | thickness_mm | weight_g |
|---|---|---|---|
| AirTag (1st gen) | 31.9 | 8.0 | 11.0 |
| AirTag (2nd gen) | 31.9 | 8.0 | 11.8 |

## Where the files are

- Apple Support: [AirTag technical specifications](https://support.apple.com/en-afri/111847) — web — Publisher's page; dimensions are facts
- Apple Support: [AirTag (2nd generation) technical specifications](https://support.apple.com/en-gb/126203) — web — Publisher's page; dimensions are facts

## Free STEP/STL (3 parts, CC BY 4.0, Xem Studio)

Index: https://xemstudio.com/files/hardware/apple-airtag/index.json

- airtag-envelope-31.9x8: [STEP](https://xemstudio.com/files/hardware/apple-airtag/airtag-envelope-31.9x8.step) · [STL](https://xemstudio.com/files/hardware/apple-airtag/airtag-envelope-31.9x8.stl) — AirTag envelope Ø31.9 × 8.0 mm
- airtag-holder-keyring: [STEP](https://xemstudio.com/files/hardware/apple-airtag/airtag-holder-keyring.step) · [STL](https://xemstudio.com/files/hardware/apple-airtag/airtag-holder-keyring.stl) — AirTag keyring holder: Ø32.2 × 8.2 pocket, snap lip, keyring loop
- airtag-holder-screw-tabs: [STEP](https://xemstudio.com/files/hardware/apple-airtag/airtag-holder-screw-tabs.step) · [STL](https://xemstudio.com/files/hardware/apple-airtag/airtag-holder-screw-tabs.stl) — AirTag holder with two M3 screw tabs (bikes, bags, furniture)

## Questions

**How big is an AirTag?**

31.9 mm across and 8.0 mm thick (Apple).

## Fits with

- [MagSafe charger puck and Apple Watch charger dimensions, MagSafe case thickness limit](https://xemstudio.com/objects/magsafe-and-watch-chargers/)
- [Lighter sizes: BIC maxi, mini and slim, Zippo case](https://xemstudio.com/objects/lighters-bic-zippo/)