Back to blog

Common GPS Coordinate Errors and How to Fix Them

April 21, 2026 · 5 min read

Swapping Latitude and Longitude

One common mistake people make when using GPS coordinates is swapping latitude and longitude. Latitude measures how far north or south a location is from the equator, while longitude measures how far east or west it is from the Prime Meridian. When these two are switched, it can lead you to the wrong place entirely. This simple mix-up can happen easily, especially when you're in a hurry or looking at multiple sets of coordinates. It's important to double-check which number goes where before hitting the road.

Imagine you're trying to find a popular restaurant in a new city. You see coordinates listed as 34.0522, -118.2437. If you accidentally enter them as -118.2437, 34.0522, you might end up in a completely different part of town or even another city. This mistake can waste your time and cause frustration, especially if you’re on a tight schedule. Many GPS devices and apps won’t even correct you if the numbers are entered incorrectly. They’ll just take you to the wrong destination without knowing what went wrong.

To avoid this mistake, always remember the order: latitude first, then longitude. It may seem simple, but it’s crucial. If you're unsure, you can quickly look it up online or check a mapping app. Some apps even display coordinates, showing you the correct format before you enter them. This way, you can ensure you’re going to the right spot without unnecessary detours.

Missing the Negative Sign

Another frequent error with GPS coordinates is missing the negative sign. This typically happens with latitude and longitude by indicating direction. A negative sign in front of latitude or longitude indicates that the point is in the southern or western hemisphere. Without this sign, the coordinates may point to a location that is miles away from where you intend to go. Many people overlook this detail, leading to some unexpected outcomes when entering coordinates.

For example, consider the coordinates 34.0522, -118.2437, which takes you to Los Angeles. If you mistakenly enter 34.0522, 118.2437, you might find yourself in the middle of the Pacific Ocean, far from the city. This error is especially common among travelers who are unfamiliar with the area. If you're searching for a place and find yourself lost in the water, it can be quite a surprise, to say the least. It’s a harsh reminder of how crucial that little negative sign is.

To dodge this issue, always check your coordinates before using them. If you see a positive longitude, but the destination is in the western hemisphere, you need to add that minus sign. You can also use online tools to confirm your coordinates and visualize them on a map. By ensuring you’ve included all the necessary signs, you can save yourself from a lot of hassle while navigating.

Mixing Decimal and DMS in the Same Number

Using both decimal degrees and degrees-minutes-seconds (DMS) formats in the same coordinate is a mistake many make. Decimal degrees is a simple format that uses a decimal point to express degrees. DMS, on the other hand, breaks down degrees into minutes and seconds. Mixing these formats can lead to incorrect locations, as the GPS may not interpret the coordinates correctly. This confusion can arise during data entry or when copying and pasting from different sources.

For instance, if you come across coordinates like 34°3'22.4" N, 118.2437° W, you need to convert them to the same format before using them. If you try to input them into a mapping app without converting, the app may not recognize the mix and could fail to find your location. This can lead to wasted time and frustration, especially if you’re in an unfamiliar area. It’s important to keep formats consistent to ensure accurate navigation.

To prevent this issue, always convert your coordinates to the same format before using them. If you're using DMS, make sure that all parts are in DMS. If you're using decimals, ensure both coordinates are in that format. Many online tools can convert between the two formats, making it easy to get them right. By keeping your coordinates uniform, you can avoid confusion and get to your destination without a hitch.

Too Few Decimal Places

Not using enough decimal places is a common mistake that can lead to inaccuracies in GPS coordinates. The more decimal places you use, the more precise your location will be. For example, coordinates such as 34.05, -118.24 are less accurate than 34.0522, -118.2437. When you only use two decimal places, you might be off by several hundred feet or more. This can cause issues when trying to find a specific location, especially in crowded or urban areas.

Imagine trying to locate a friend’s house in a bustling neighborhood. If you only have coordinates that are rounded to two decimal points, you may end up missing the spot completely. For example, those coordinates may place you in a nearby park rather than right in front of your friend's door. In such cases, not having enough detail can mean the difference between arriving on time and wandering around aimlessly. It’s particularly frustrating when you’re in a hurry or have other time commitments.

To avoid this pitfall, make sure to use at least four to six decimal places for your coordinates. This level of precision significantly narrows down your location. Most GPS devices and apps will handle this automatically, but it's good to check. If you're unsure how many decimal places to use, you can always look at the coordinates of places you know to see how detailed they are. Being precise helps you get to where you need to be quickly.

Copying a Pasted Coordinate that Picked Up Extra Spaces

A final mistake that often goes unnoticed is copying and pasting coordinates that come with extra spaces. When you copy text from one source to another, it’s common for extra spaces to get included, especially if you’re grabbing it from a website or document. These additional spaces at the beginning or end, or even between numbers, can confuse GPS devices or mapping apps. They may not recognize the coordinates as valid, leading to errors.

For example, if you copy the coordinates 34.0522 , -118.2437, the extra space before the comma can cause problems. When you paste it into your GPS, it might return an error or direct you to the wrong location. You could find yourself in a frustrating situation, lost and confused because of something as simple as an extra space. This can be especially annoying when you’re in a hurry or relying on GPS for your navigation needs.

To avoid this issue, always double-check the coordinates after pasting them into any application. Make sure there are no extra spaces before, within, or after the numbers. Many GPS apps will not alert you about the issue, so it's important to be vigilant. You can also use text editing tools that show hidden characters, which can help identify and remove any unwanted spaces. Taking a moment to verify the coordinates can save you a lot of trouble later on.

Questions people ask

What are coordinates?

Coordinates are sets of numbers that describe a specific location on Earth. They are typically in latitude and longitude format, which helps pinpoint places on a map.

How do I find the coordinates for a location?

You can find coordinates by searching for an address on mapping apps or websites. Tools like LatLong Finder allow you to enter an address or click on a map to retrieve the latitude and longitude.

What should I do if my GPS isn't working?

If your GPS isn't working, first check if you've entered the coordinates correctly. Ensure there are no extra spaces or formatting issues. If everything looks good, try restarting your device or checking your internet connection.

Can I convert coordinates between formats?

Yes, there are many online tools that can convert coordinates between decimal and DMS formats. This is helpful if you encounter coordinates in different formats and need them to match.