Recherche de coordonnées GPS

The coordinates finder returns latitude and longitude for a selected map location. It is useful when you need a precise point for a form, field note, data table, mapping app, property discussion, or shared reference.

Étapes rapides

1. Recherchez un lieu ou zoomez sur une zone de la carte.
2. Cliquez n’importe où pour placer un marqueur et obtenir les coordonnées.
3. Faites glisser le marqueur pour affiner la position exacte.
4. Copiez les coordonnées en degrés décimaux (DD) ou au format DMS.
5. Cliquez sur Partager pour partager vos coordonnées.

Degrés décimaux et DMS

Decimal degrees write coordinates as signed numbers, such as latitude 40.7128 and longitude -74.0060. They are common in web maps, spreadsheets, APIs, and modern GPS tools because they are compact and easy to copy. Degrees-minutes-seconds break the same position into degrees, minutes, and seconds, which is common in older records and some field workflows.

Both formats describe the same point. If you need to paste coordinates into a website or data file, decimal degrees are usually the safest choice. If you are reading a survey note, historical document, or outdoor guide, DMS may be the format you need to compare.

Utilisations courantes

Coordonnées are helpful when an address is missing, ambiguous, or not precise enough. A gate, trail junction, field sample, construction entrance, campsite, utility pole, or shoreline point may not have a reliable street address. Selecting the point on the map gives you a reference that can be copied and shared.

Coordonnées also support repeatable work. If you are collecting several locations, copy each coordinate into a spreadsheet with a short note. Later, you can return to the same points, compare them with measurements, or share them with another mapping tool.

Précision et confidentialité

More decimal places mean more apparent precision, but the real accuracy still depends on map data, imagery, device location, and where you click. A coordinate copied from a map is usually good for reference and planning, but it should not be treated as a surveyed position unless it came from survey-grade equipment and authoritative records.

Use care when searching for private addresses or sensitive locations. Search requests may be handled by third-party map services, and browser storage may keep local preferences. Avoid putting confidential information into search queries, and review the Politique de confidentialité for more detail.

Bonnes pratiques

Zoom in before clicking, especially in dense urban areas or near parcel boundaries. Compare the selected point with visible landmarks. If the coordinate will be used by someone else, include context such as "north gate", "trail junction", or "field sample 3" so the number is not the only clue.

If a coordinate controls safety, legal work, construction, or navigation in difficult terrain, verify it with official data or appropriate field equipment. Online coordinates are a strong starting point, not a guarantee of ground truth.

How to Review Coordonnées Before Sharing

Before sending coordinates to another person, check that the marker is on the exact feature you mean. A coordinate for a driveway entrance, gate, trail junction, building corner, or field sample can be different from the coordinate for the nearest address label. Zoom in, compare nearby roads and landmarks, and move the marker until the point matches the real-world location you want someone else to find.

Include the coordinate format with the value. Decimal degrees are usually easiest for web maps and spreadsheets, while DMS may be required by older documents, outdoor guides, or field notes. If you paste coordinates into another tool, confirm that latitude and longitude were not reversed and that negative signs for south or west were preserved.

For shared work, add a short note such as "north gate entrance", "sample point on east bank", or "approximate meeting point near parking area." That note prevents a bare number from being misunderstood and helps someone verify that the coordinate still makes sense if the map imagery, address database, or visible landmarks change later.

If you keep a coordinate list over time, record the source and date for each point. A copied coordinate may still be valid, but the visible path, building outline, shoreline, or access road around it can change. Keeping notes about where the point came from makes later reviews easier and helps separate a coordinate value from the changing map context around it.

FAQ des coordonnées GPS

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