Rex says
Money math without the spreadsheet headache. Plug in your numbers and I'll show you exactly where the dollars land.
Try a scenario
Click to load — tweak from there.Inputs
Result
Price per sponsor slot
$302
Revenue per issue
$605
Monthly sponsorship revenue
$2,419
Annual run rate
$29,030
Opens per issue
7,560
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One click, a permanent link with your numbers baked in.
How to use this
- 1Enter subscribers.
- 2Enter open rate (%).
- 3Enter cpm you want to charge ($).
- 4Enter sponsor slots per issue.
- 5Enter issues per month.
- 6Read your price per sponsor slot on the right — it updates as you type.
- 7Hit Share to keep the scenario or send it to someone.
About this calculator
Newsletter ads are priced on CPM against opens, not total subscribers, because an unopened email delivers nothing. Rates of $25–$60 CPM are typical, with niche B2B lists commanding far more.
Worked example
Using the values the calculator loads with:
Inputs
- Subscribers: 18000
- Open rate: 42 %
- CPM you want to charge: 40 $
- Sponsor slots per issue: 2
- Issues per month: 4
Results
- Price per sponsor slot: $302.40
- Revenue per issue: $604.80
- Monthly sponsorship revenue: $2,419.20
- Annual run rate: $29,030.40
- Opens per issue: 7,560
What each field means
Inputs
- Subscribers
- The subscribers used in the calculation. Starts at 18000 so you have a working example on load.
- Open rate (%)
- The open rate used in the calculation, measured in %. Starts at 42 % so you have a working example on load. Accepted range: 1–100 %.
- CPM you want to charge ($)
- The cpm you want to charge used in the calculation, measured in $. Starts at 40 $ so you have a working example on load.
- Sponsor slots per issue
- The sponsor slots per issue used in the calculation. Starts at 2 so you have a working example on load.
- Issues per month
- The issues per month used in the calculation. Starts at 4 so you have a working example on load.
Results
- Price per sponsor slot
- Returned as a money amount in US dollars and shown as the headline result. It recalculates instantly whenever you change an input, so you can compare scenarios without reloading.
- Revenue per issue
- Returned as a money amount in US dollars. It recalculates instantly whenever you change an input, so you can compare scenarios without reloading.
- Monthly sponsorship revenue
- Returned as a money amount in US dollars. It recalculates instantly whenever you change an input, so you can compare scenarios without reloading.
- Annual run rate
- Returned as a money amount in US dollars. It recalculates instantly whenever you change an input, so you can compare scenarios without reloading.
- Opens per issue
- Returned as a whole number. It recalculates instantly whenever you change an input, so you can compare scenarios without reloading.
FAQ
How does the newsletter sponsorship rate calculator work?
Newsletter ads are priced on CPM against opens, not total subscribers, because an unopened email delivers nothing. Rates of $25–$60 CPM are typical, with niche B2B lists commanding far more. The underlying maths is: Rate = Opens ÷ 1,000 × CPM.
What do I need to enter?
5 values: subscribers, open rate, cpm you want to charge, sponsor slots per issue, and issues per month. Each field starts with a sensible default, so you can change one number at a time and watch the result move.
What does the price per sponsor slot result mean?
It is returned as a money amount in US dollars and updates live as you edit the inputs, so you can compare two or three versions of a scenario in a few seconds.
Is this calculator free, and do I need an account?
Yes, it's free, and no account is required. Nothing you type is stored on our servers — the maths runs entirely in your browser.
How accurate is the result?
It applies the standard formula exactly, so the arithmetic is precise. Results are estimates before tax, fees, and inflation unless an input explicitly covers them.
Who is this tool for?
It's built for anyone comparing money scenarios before committing — budgeting a payment, sanity-checking a quote, or seeing what a change in rate or term actually costs.
Accuracy and limitations
- Results are estimates before tax, fees, and inflation unless an input explicitly covers them.
- Rates are treated as fixed for the whole period — variable-rate products will drift from this projection.
- This is educational maths, not financial advice. Check anything contractual with the lender or your accountant.
Related tools
Cite this calculator
Writing about this topic? Grab a citation — every link helps keep these tools free.
RevenueLab. (2026). Newsletter Sponsorship Rate Calculator. Retrieved from https://www.revenuelab.fyi/toolbox/newsletter-sponsorship
<p>Source: <a href="https://www.revenuelab.fyi/toolbox/newsletter-sponsorship" target="_blank" rel="noopener">Newsletter Sponsorship Rate Calculator — RevenueLab</a> (2026).</p>
Source: [Newsletter Sponsorship Rate Calculator — RevenueLab](https://www.revenuelab.fyi/toolbox/newsletter-sponsorship) (2026).