Google Maps FID Converter

What is a google maps fid?

A google maps fid, or Feature ID, is the raw hexadecimal identifier Google assigns to a place in its map database, and this converter turns that fid (the 0x...:0x... hex string) into a decimal CID and back in one click. Instead of running manual hex math or writing a script, you paste the identifier, press convert, and get the matching value instantly. The tool works in both directions, so a feature id becomes a CID and a CID rebuilds into the correct hex string without guesswork or copy paste errors.

In plain terms, the Feature ID is the "address" Google uses internally for a business or landmark. The second half of that hex string is the part that maps to the CID, the number used in shareable Google Maps links. This converter removes the friction, giving local SEO teams, developers, and agencies a fast, reliable way to move between the two formats without touching a calculator or a code editor.

How to use the Google Maps FID Converter

Using the Google Maps FID Converter takes seconds and needs no coding, no spreadsheet formula, and no browser extension. Follow these steps to move between a feature id and a decimal CID cleanly every time.

1. Copy the identifier you want to convert. It looks like 0x89c259b7b6b1a1c1:0x40e6a3d2f1b0c9e4, a pair of hex values joined by a colon. You will usually find it inside a Google Maps place URL or in exported listing data.
2. Paste the full hex string into the converter's input field. You can paste both halves or just the second half, which is the part that actually maps to the CID.
3. Choose your direction. Select "FID to CID" to get the decimal value, or switch to "CID to FID" if you already hold a decimal CID and need the hex form for another system.
4. Press Convert. The tool runs the hex to decimal calculation instantly and displays the result, so there is no waiting and no external API call.
5. Copy the output. You now have a clean decimal CID (for example 4676529001234567908) that you can drop into a maps.google.com/?cid= link, a client report, a data sheet, or an API request.

The output you get is a ready to use decimal CID paired with its original hex identifier, so you can verify both values side by side and paste whichever format your workflow needs at that moment. Because the conversion happens in your browser, there is nothing to install and no rate limit to worry about, which makes it practical to run the same steps across a long list of listings during an audit. If a result looks wrong, the fastest check is to paste the source URL back in and confirm you copied the complete hex string rather than a truncated fragment.

Why the google maps fid matters for local SEO

The google maps fid matters because it is the most stable way to point to an exact business listing. Names, addresses, and even Place ID values can shift over time, but the feature id and its matching CID stay locked to the same map entity. When you build citations, run rank checks, or audit a client's Google Business Profile, referencing the correct identifier means you are always measuring the right location and not a near duplicate that happens to share a name.

The CID is especially valuable because it powers the short, shareable links your clients actually click. A link built as https://maps.google.com/?cid=CID_VALUE opens the precise listing every single time. Converting a raw identifier into that decimal CID through a clean hex to decimal step lets you generate review links, embed maps, and confirm you have found the canonical profile rather than a stray duplicate pin that would skew your data.

For agencies juggling dozens or hundreds of locations, the identifier also connects to the wider google maps place id ecosystem. Some tools accept a Place ID, others expect a CID, and older or embedded URLs carry the ludocid parameter instead. Being able to convert between formats quickly keeps your reporting consistent and prevents the small mismatches that quietly break local SEO tracking, waste credits, and lead to reports that point at the wrong storefront.

There is also a practical accuracy benefit. Doing the hex to decimal math by hand is error prone: one transposed digit produces a CID that either fails silently or opens a completely different place. Automating the conversion removes that risk entirely, which matters most when you are processing a batch of listings and cannot eyeball every result. A reliable identifier is also the foundation for repeatable reporting, since every future scan can key off the same CID and compare cleanly against past runs instead of drifting to a look alike listing.

Understanding Google Maps identifiers

Google uses several identifiers for the same place, and mixing them up is the root cause of most local SEO data errors. The infographic below shows how the hex identifier flows through the converter into a decimal CID, and how the Place ID sits alongside them as a parallel label for the same physical location. Each identifier serves a different job, but they all resolve to one storefront on the map, so learning how they relate makes your data far more trustworthy.

Feature ID (FID)

The feature id is Google's internal hexadecimal reference for a map feature, formatted as two hex values joined by a colon, such as 0x89c259b7b6b1a1c1:0x40e6a3d2f1b0c9e4. The first half describes a broad geographic tile, and the second half identifies the specific entity. When people talk about a google maps fid, they usually mean this full pair, and it is the raw material the converter reads.

CID

The CID, or Customer ID, is the decimal number Google uses in shareable Maps links like maps.google.com/?cid=. It is derived directly from the second half of the feature id through a hex to decimal conversion. Because it opens the exact listing, the CID is the identifier most local SEO workflows and review link generators actually rely on day to day.

Place ID

The google maps place id is a different string, usually starting with ChIJ, used by the Google Places API rather than in user facing URLs. It points to the same location as the feature id and CID but is encoded for developer tooling. You often need to move between a Place ID and a CID, which is exactly why keeping these identifiers straight saves so much rework.

The hex to decimal relationship

The link between the identifier and a CID is pure math: the second hex block, once you strip the 0x prefix, is converted from base 16 to base 10 to produce the decimal CID. That is the entire trick, and it is exactly what this converter automates so you never mistype a digit. You can read more about how Google structures these identifiers in the official Google Places documentation.

Best practices and common mistakes

• Always copy the full hex string when you can. If you only grab the first half of the identifier, you will convert the geographic tile, not the business, and end up with a meaningless CID that opens nothing.
• Strip stray spaces and the 0x prefix consistently. Pasting a leftover prefix into a decimal field, or leaving a trailing space, is the most common cause of a wrong hex to decimal result.
• Do not confuse a CID with a google maps place id. A CID is a long decimal number, while a Place ID is an alphanumeric string that usually starts with ChIJ. They are not interchangeable in API calls or in most third party tools.
• Verify the converted CID by pasting it into a maps.google.com/?cid= link before you use it in reports. If it opens the wrong listing, you likely captured a duplicate pin's feature id rather than the canonical one.
• Watch for the ludocid parameter in older or embedded URLs. It carries the same value as the CID, so treat ludocid= and cid= as the same number and do not convert it twice.
• Keep a record of the source URL next to each identifier. When you audit dozens of locations, being able to trace where a feature id came from saves hours of rechecking later.

When to use the Google Maps FID Converter

Reach for the Google Maps FID Converter whenever you have one identifier format but need another. Local SEO work is full of moments where a URL hands you a hex string but your next tool wants a plain decimal number, and doing that translation by hand across a client roster does not scale. These are the scenarios where the tool saves the most time.

1. Building review or listing links. You have copied a feature id from a Maps URL and need the decimal CID to build a clean ?cid= review link that you can send to a client or add to a "leave us a review" button.
2. Deduplicating listings. You suspect two entries are the same business. Converting each identifier to a CID confirms in seconds whether they resolve to one map entity or two separate pins, which is critical before you file a duplicate report.
3. Feeding APIs and rank trackers. A tool expects a decimal CID, or a record needs to be reconciled against a google maps place id. The converter bridges the hex form and the decimal form your software actually requires.
4. Debugging embedded maps. An embed or a ludocid parameter is pointing at the wrong place. Converting the identifier back to its hex form helps you see exactly which feature was referenced so you can correct the source.

Frequently asked questions

What is a google maps fid in simple terms?

A google maps fid, or Feature ID, is the hexadecimal code Google assigns to a specific place in its map database. It is written as two hex values separated by a colon, and the second half converts into the decimal CID used in shareable Google Maps links.

How does the converter turn a feature id into a CID?

It takes the second hex block of the feature id, removes the 0x prefix, and performs a hex to decimal conversion from base 16 to base 10. The result is the decimal CID that opens the exact listing in Google Maps.

Is a CID the same as a google maps place id?

No. A CID is a long decimal number used in ?cid= URLs, while a Place ID is an alphanumeric string starting with ChIJ used by the Places API. They point to the same location but are formatted differently and are not interchangeable.

What is the ludocid parameter?

The ludocid parameter appears in some Google URLs and carries the same value as the CID. If you see ludocid= in a link, you can treat that number exactly like a standard CID without any further conversion.

Can I convert a CID back into a google maps fid?

Yes. The converter works in both directions, so you can paste a decimal CID and get the matching hex feature id. This is useful when a tool gives you a CID but you need the raw fid for another system or database.

Where do I find a feature id to convert?

You can pull it from a Google Maps place URL, from the source of an embedded map, or from exported listing data. To manage the underlying business profile itself, see Google's official Business Profile help.

Converting identifiers is only the first step. Once you know you are pointing at the exact right listing, ProMapRanker helps you track how that business ranks across the map grid for your target keywords, so you can prove real progress to clients with geo grid data instead of guesswork. start free with 150 credits and turn a clean CID into a full local rank tracking picture.

Related tools

• Google Maps CID Extractor
• Google Maps Ludocid Extractor
• Google Place ID Finder
• Place ID Lookup
• Google Maps Link Decoder