Tunisia coordinate converter
Free Tunisia coordinate converter: Carthage datum, the Nord Tunisie belt and TM 6 to WGS84 and UTM zone 32 — about 1.2 m accuracy with official EPSG parameters.
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Coordinate systems in Tunisia: quick reference
The national datum in Tunisia is Carthage (EPSG:4223), a classic frame behind the topographic maps, the land registry and government survey work for decades. It is delivered in several projections, the best known being the Nord Tunisie belt (EPSG:22391), which covers the north of the country on a unified grid.
Alongside the northern belt, Carthage / UTM zone 32N (EPSG:22332) serves work in zone 32, and the Carthage / TM 6 projection (EPSG:2088) appears in some applications. It is worth saying honestly that the accuracy of Carthage-to-WGS84 transformations is about 1.2 metres — enough for general survey but short of modern GNSS observation.
Tunis, near longitude 10 degrees east, sits in zone 32N. The converter below opens on the capital and lists the Tunisian systems first, returning the result in every system that covers your point, each with an explicit accuracy badge.
| EPSG | System | Accuracy |
|---|---|---|
| 4223 | Carthage(geographic) | ±0.1 m |
| 22391 | Carthage / Nord Tunisie(projected grid) | ±1.2 m |
| 22332 | Carthage / UTM zone 32N(projected grid) | ±1.2 m |
| 2088 | Carthage / TM 6(projected grid) | ±1.2 m |
The tool covers 6 systems relevant to Tunisia (national systems plus the WGS84 UTM zones) — the table above lists only the key ones.
FAQ
- Which coordinate system does Tunisia use?
- The national datum is Carthage (EPSG:4223) with the Nord Tunisie belt (EPSG:22391), the UTM zone 32N projection (EPSG:22332), and sometimes Carthage / TM 6 (EPSG:2088). Modern work is observed on WGS84 and transformed when needed.
- How accurate is the Carthage transformation?
- The Carthage-to-WGS84 transformation is about 1.2 metres by the published EPSG parameters. That is fine for general survey and mapping, but projects needing centimetre accuracy should observe directly on a modern frame.
- Which UTM zone is Tunis in?
- Tunis, near longitude 10 degrees east, sits in zone 32N, the zone that covers most of the country. Southern Tunisia mostly stays in zone 32 as well.
- Why does GPS disagree with an old Carthage sheet?
- GPS observes on WGS84 while the sheet sits on Carthage, and the two differ by several metres. This tool applies the published shift automatically, noting that this transformation is accurate to about 1.2 metres.
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