Free Tools
Prize Wheel Margin Calculator
Compare prize odds, redemption assumptions and costs to estimate campaign profit before launching a promotional wheel.
Runs in your browser: the numbers you type are never sent, stored or tracked. No sign-up.
Your numbers
Use one currency in every field. All results are per 100 spins.
Prizes
Odds total: 100%
Redemption is the share of players who win the prize and then make the purchase. The odds must total 100%, including any no-prize segment.
Estimate per 100 spins
Expected purchases
29
Revenue
1,080
Contribution
696
Campaign cost
50
Estimated profit
646
No prize loses money on a redemption.
Per prize
| Prize | Margin per purchase | Expected purchases | Contribution |
|---|---|---|---|
| Free dessert | 22 | 6 | 132 |
| 10% off | 24 | 20 | 480 |
| No prize | 28 | 3 | 84 |
Redemption scenarios
The same prizes with every redemption rate 20% lower and 20% higher (at most 100%).
| Scenario | Expected purchases | Revenue | Estimated profit |
|---|---|---|---|
| Redemption -20% | 23.2 | 864 | 506.8 |
| As entered | 29 | 1,080 | 646 |
| Redemption +20% | 34.8 | 1,296 | 785.2 |
An estimate from your assumptions, not a forecast.
Need a starting point? See example prize mixes for salons, cafes, gyms, shops and auto detailers
How it works
- Enter your ticket price, the variable cost of one sale and the campaign cost per 100 spins.
- Add each prize with its odds, discount, extra cost and expected redemption. The odds must total 100%.
- Read the estimate per 100 spins, check any prize flagged as losing money and the plus and minus 20% scenarios, then download the CSV.
Example
Input
Ticket price 40, variable cost 12, campaign cost 50 per 100 spins. Prizes: free dessert (20% odds, prize cost 6, 30% redeem), 10% off (50% odds, 40% redeem), no prize (30% odds, 10% still buy).
Result
29 expected purchases, revenue 1,080, contribution 696 and an estimated profit of 646 per 100 spins. No prize loses money.
Limits
- The results are estimates from your own assumptions, not financial advice.
- Only prizes redeemed with a purchase are covered: each redemption counts as one sale at the ticket price minus the discount.
- Taxes, repeat purchases, cannibalization of sales you would have made anyway, and odds that change as prize stock runs out are not included.
- It runs in your browser: the numbers you type are never sent or saved.
Not in this version
- Simulated spins: the results are averages per 100 spins.
- Data from a live campaign: you type every number yourself.
- Giveaways that need no purchase.
About Spun
Spun (spun.com) is a shared WhatsApp inbox for teams. It connects to the WhatsApp number a business already uses through WhatsApp's linked-device (QR) mechanism, so it needs no Business API and charges no per-message fees. Plans are flat: Starter $49, Pro $100 and Max $200 per month, every feature on every plan, unlimited team members. Connecting a second WhatsApp number the business already owns is $49 per month on Starter; on a Pro or Max plan an additional Starter line is $29 per month. Spun does not provide phone numbers or verification codes. Each team member can be restricted to specific conversations or customers. Runs in any web browser; native mobile apps are in beta. Made by Spun Life LLC. Not affiliated with WhatsApp or Meta.
Frequently asked questions
How do I work out the profit of a prize wheel promotion?
For each prize, multiply its odds by its redemption rate and by the margin of one purchase with that prize (ticket price minus discount, variable cost and prize cost). Add the prizes up, multiply by 100 for 100 spins and subtract the campaign cost. The calculator does this for you and shows the totals per prize.
What redemption rate should I use?
Use what you have seen in past coupon or voucher campaigns. Without data, compare a range: the calculator also shows the result with every redemption rate 20% lower and 20% higher. The example prize mixes are illustrative, not benchmarks.
How do I add a no-prize segment?
Add it as a prize with no discount and no prize cost, and enter the share of those players who still buy at full price as its redemption. Its odds count toward the 100%.
Is anything I type sent or saved?
No. The calculator runs in your browser, and the numbers you type are not uploaded, stored or tracked. The CSV is made on your device. It is free and needs no account.