What is earned media value?

Earned media value is an estimate of what the coverage you did not pay for would have cost to buy. For a live event, that means the posts, stories and reels your guests published about it, priced at whatever you would have paid to reach the same people through advertising.

It exists because the alternative is reporting a number nobody can use. A recap that says an event produced 312 posts tells a finance team nothing. The same recap that says those posts reached 612,000 people, and that buying that reach would have cost about $17,000, is a sentence a budget conversation can actually run on.

The formula

Almost every version of earned media value comes down to reach multiplied by a rate:

(Impressions ÷ 1,000) × CPM = Earned media value

CPM is cost per thousand impressions, the unit media is bought in. The rate you use should be one you can point at, which in practice means one of two things: the blended CPM from your own paid social buys, or a published benchmark for the platform and market you are measuring.

Some teams weight engagement instead of, or alongside, impressions. That variant prices each like, comment, save and share rather than each view. Both are defensible. What is not defensible is switching between them depending on which produces the bigger number.

A worked example

Take a launch dinner with 180 guests. After the event, 46 of them posted something about it, producing 71 pieces of content across Instagram and TikTok.

The arithmetic is 612,000 divided by 1,000, which is 612, multiplied by $28. If the event cost $40,000 to produce, you have accounted for $17,136 of it in earned media alone, before anything the room did commercially.

The engagement-weighted version of the same event, valuing its 24,800 engagements at $0.35 each, comes to $8,680. Neither figure is the true one. They answer slightly different questions, and the useful discipline is picking one and using it every time.

Multipliers, and why to be careful with them

A common practice is to multiply the result to reflect earned coverage being more trusted than an advert. Multipliers between 2x and 5x circulate widely, and applying one turns the example above into anything from $34,000 to $85,000.

There is real research behind the idea that recommendations outperform advertising. There is no agreed number for it. If you apply a multiplier, state it on the same page as the result, keep it the same across every event, and expect to defend it. The version of this metric that gets a team in trouble is the one where the multiplier moves quietly.

What earned media value is good for

It is a comparison tool. Measured the same way every time, it tells you which of your events produced the most coverage, which formats travel, and which guests reliably post. Those are decisions you can make with it.

It is not an accounting figure and it does not belong in revenue reporting. It is a modelled estimate of avoided cost, built on impression counts that platforms themselves report inconsistently. Treat it the way you treat a media plan: useful for planning and for arguing, not for the ledger.

How to measure it for an event you already ran

Four steps, whether you do it by hand or not.

1. Start from the guest listExport the attendee list from whatever platform ran the event. The people on it are the people whose posts count as earned coverage from your activation.
2. Find what they publishedSearch the event tag, the location and the date range, then check the handles of the guests you know. Most untagged content sits with people who were in the room and never mentioned the brand by name.
3. Record reach and engagement per postOne row per piece of content, with the impressions and the engagements. Doing this per post rather than in a lump sum is what lets you answer questions about the total later.
4. Apply one rate, and write it downMultiply reach by your CPM, sum the rows, and note the rate on the report next to the number it produced.

Done by hand for a 180-person event, this is most of a working day, and it gets harder the longer you leave it because stories expire. Done in content capture, it runs off the guest list you already have, and the event report shows the total with every post that contributed to it still attached.