Algeria coordinate converter
Free Algeria coordinate converter: Nord Sahara 1959, the Voirol belt and modern RGSH2020 to WGS84 and UTM zone 31 — official EPSG parameters with accuracy badges.
Converter
Click the map to pick any point and convert it instantly, or enter coordinates manually.
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Collect named points from conversions or a pasted table, see them on the map, convert them all to one system, and download in any format. The list is stored locally in your browser only.
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Paste rows from Excel or a text file — the delimiter is auto-detected. Pick the column order, or leave “Auto” to guess from headers.
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Coordinate systems in Algeria: quick reference
Algeria has long relied on the Nord Sahara 1959 datum (EPSG:4307), which unified survey, mapping and petroleum work across both the Sahara and the north. This datum inherited the older Voirol-school projections through the Nord Algerie belt (EPSG:30791) that covers the northern strip on a single grid.
Alongside that belt, Nord Sahara 1959 / UTM zone 31N (EPSG:30731) serves work in zone 31, where most of the north lies. The modern frame is RGSH2020, tied to the global frames and supplied as geographic coordinates (EPSG:10299) and through the RGSH2020 / UTM zone 31N projection (EPSG:22231) for precise new work.
Algiers, near longitude 3 degrees east, sits in zone 31N. Enter your coordinates in the converter below, which opens on the capital and lists the Algerian systems first, to get the value in every system that covers your location, each with a clear accuracy badge.
| EPSG | System | Accuracy |
|---|---|---|
| 4307 | Nord Sahara 1959(geographic) | ±0.1 m |
| 30791 | Nord Sahara 1959 / Algeria Nord(projected grid) | ±0.1 m |
| 30731 | Nord Sahara 1959 / UTM zone 31N(projected grid) | ±0.1 m |
| 22231 | RGSH2020 / UTM zone 31N(projected grid) | ±0.1 m |
| 10299 | RGSH2020(geographic) | ±0.1 m |
The tool covers 23 systems relevant to Algeria (national systems plus the WGS84 UTM zones) — the table above lists only the key ones.
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