Dunkin’ Is Giving Away 1 Million Free Coffees Today. Here’s How to Get One
Coffee lovers, it might be a good day to skip the coffee maker at home. Dunkin’ is giving away 1 million free iced coffees on Wednesday, Oct. 21, and all it takes to get one is the Dunkin’ app and a little speed.
The chain is offering a free iced coffee of any size to Dunkin’ Rewards members, but only the first 1 million people to claim the deal will get one. Once those codes are gone, the offer ends.
Here’s everything to know about today’s giveaway, including the promo code and how to redeem it.
When the Code Drops
The free coffee code went live at noon ET on Wednesday, Oct. 21. Today’s code is SIZEDOESNTMATTER, and it’s only valid on Oct. 21.
The giveaway comes courtesy of Spidey D, Dunkin’s Halloween Spider Donut character, who has taken over the brand’s social media accounts for the season. According to Dunkin’s official announcement, the character is celebrating the takeover by handing out 1 million free iced coffees to fans.
Because the giveaway is limited to the first 1 million codes, timing matters. In past giveaways, the codes have gone quickly, so it’s a good idea to claim yours as soon as possible.
How to Claim Your Free Coffee
To get your free coffee, you’ll need to be a Dunkin’ Rewards member. If you’re not already signed up, joining is free through the Dunkin’ app or the Dunkin’ Rewards website.
Once you’re a member, the process takes only a few steps:
Open the Dunkin’ app: Make sure you’re logged into your Dunkin’ Rewards account.
Find Offers & Rewards: Head to the Offers & Rewards section of the app.
Enter the code: Type in SIZEDOESNTMATTER to unlock the offer.
Redeem your coffee: Use your free coffee certificate at a participating Dunkin’ location.
If you’re new to Dunkin’ Rewards, setting up your account takes just a few minutes, so you can still claim a code before they run out.
What to Know Before You Redeem
The offer is good for a free iced coffee in any size, from small to large. That means fans who usually reach for a large can go big without paying a cent.
Once you enter the code, your free coffee certificate is valid for five days, and the deal is limited to one per customer. Additional terms and exclusions may apply, so check the details in the app when you redeem your code.
Since the code itself only works on Oct. 21, be sure to enter it today, even if you don’t plan to pick up your coffee right away. You’ll have the rest of the five-day window to stop by.
Dunkin’s Year of Free Coffee
If this feels familiar, that’s because Dunkin’ has made big coffee giveaways something of a tradition in 2026.
The chain kicked things off on April Fools’ Day, giving away 1,000,001 free coffees to one-up its own 1 million coffee giveaway from 2025. Later that month, it held a second giveaway after teasing it in a cryptic Instagram post.
Dunkin’ also celebrated the start of pumpkin season in August by giving away 1 million free espresso drinks to Rewards members who used the code EASYCHOICE.
In September, the chain released another round of free coffee codes to celebrate its first collaboration with L.L.Bean, followed by a free medium coffee for Rewards members on National Coffee Day.
With so many giveaways this year, Dunkin’ fans may want to keep an eye on the app and the brand’s social media accounts. Based on its track record, and with Spidey D still in charge of the brand’s social channels through Halloween, another free coffee could be just around the corner.
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