CPM Calculator
Works out the CPM of a campaign, what a set number of impressions will cost, or how many impressions a budget buys.
Share sends a link that reopens these numbers. Copy details pastes the full breakdown as a list.
The formula
CPM = cost ÷ impressions × 1,000 cost = CPM × impressions ÷ 1,000 impressions = cost ÷ CPM × 1,000
The M is the Roman numeral for a thousand, as in cost per mille. It is a price for showings, whatever happens after them.
What to watch out for
Choose what you want to find and fill in the other two. Use CPM to compare the price of reaching people across placements, and look at clicks or conversions to see what that reach did.
Frequently Asked Questions
How do I calculate CPM?
Divide the cost by the impressions and multiply by 1,000. 500 for 200,000 impressions is a CPM of 2.50.
How many impressions will my budget buy?
Divide the budget by the CPM and multiply by 1,000. 500 at a CPM of 4 buys 125,000 impressions.
How much will a set number of impressions cost?
Multiply the CPM by the impressions and divide by 1,000. 300,000 impressions at a CPM of 4 cost 1,200.00.