Reach per postcode
Pick a radius from 5 km to the whole country, an age group and a gender. The reach updates as you go.
Reach per postcode, calculated from CBS and NMO
Digitalaudio.nl is the sister site of Radioreclame.nl, for small businesses advertising on online radio, streaming and podcasts.
Built with
By the numbers
- postcode areas in the calculator
- 4,067
- media compared on CPM
- 11
- second load time on desktop
- 0.7
The problem
Digital audio is bought per thousand listens, the CPM. To a small business owner that means little. The copywriter found 'CPM, impressions and targeting' too technical for the homepage. The site had to answer two questions: how many people in my region hear me, and at what cost?
What we did
We built digitalaudio.nl in Next.js, with its own Strapi CMS. At its core is a four-step reach calculator: postcode and radius, audience, duration and budget. It adds up the residents per postcode area from CBS and applies the weekly reach from NMO. A table puts the CPM of digital audio next to ten other media.
What it delivers
For postcode 3511 in Utrecht and 30 km, the calculator arrives at 338,753 unique listeners a week. A €150 budget buys about 10,000 listens. Anyone who wants a proposal leaves a name and email, and the team gets every figure by email. The homepage loads in 0.7 seconds on desktop. GA4 and Search Console for both sites sit under one account.
Highlights
CPM next to other media
Digital audio costs €12 to €18 per thousand listens. The table puts that next to ten other media, from Facebook to billboards.
Three routes to a spot
Supply your own spot, have a voice actor record it or choose an AI voice.
Requests with every figure
A request from the calculator reaches the team's inbox and Strapi with postcode, audience and budget.
More visuals
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Describe it in one message. We calculate what it currently costs you in licences and manual work and tell you honestly whether custom software is worth it. Even if the answer is no.