Dunkin' Caffeine Calculator
Find the caffeine in every Dunkin' drink and check it against your personal daily limit.
✓ Last reviewed March 2026 · All Dunkin' drinks covered
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MyCaffeineCalculator Health Research Team
Caffeine data from Dunkin' official nutrition information. Safe limits based on FDA 400mg/day guideline. Reviewed March 2026.
Include unit — 160lbs or 70kg
Complete Dunkin' Caffeine Chart
| Drink | Small | Medium | Large | XL |
|---|---|---|---|---|
| Brewed Coffee (Hot) | 150mg | 210mg | 300mg | 359mg |
| Iced Coffee | 198mg | 297mg | 396mg | — |
| Cold Brew | 174mg | 260mg | 347mg | — |
| Latte / Cappuccino | 118mg | 166mg | 249mg | — |
| Americano | 189mg | 284mg | 371mg | — |
| Macchiato | 75mg | 150mg | 225mg | — |
| Dunkin' Refresher | 66mg | 99mg | 132mg | — |
| Frozen Coffee | 48mg | — | — | — |
| Espresso (per shot) | 75mg per shot | — | ||
| Hot Chocolate | 0mg | 0mg | 0mg | — |
Dunkin' Iced Coffee is surprisingly strong: A Large Iced Coffee (396mg) is one of the highest-caffeine items at Dunkin' and comes close to the FDA's 400mg daily guideline in a single drink. Many people order iced coffee thinking of it as lighter than hot coffee — at Dunkin', it's actually stronger per equivalent size due to the brewing method used.
Dunkin' vs Starbucks vs McDonald's Caffeine
| Chain | Medium Brewed Coffee | Medium Cold Brew | Medium Latte |
|---|---|---|---|
| Dunkin' | 210mg (14oz) | 260mg | 166mg |
| Starbucks | 310mg Grande (16oz) | 205mg Grande | 150mg Grande |
| McDonald's McCafé | 145mg (16oz) | 200mg | 142mg |
| Tim Hortons | 205mg (14oz) | n/a | ~100mg |
Dunkin' sits in the middle of the major chains for brewed coffee — stronger than McDonald's, weaker than Starbucks. Where Dunkin' really stands out is iced coffee and cold brew, which are both notably stronger per ounce than their hot coffee equivalents.
Frequently Asked Questions
How much caffeine is in Dunkin' coffee?
Small (10oz): 150mg · Medium (14oz): 210mg · Large (20oz): 300mg · XL (24oz): 359mg. Cold brew is higher: Small 174mg, Medium 260mg, Large 347mg. Iced coffee is strongest per serving: Large Iced Coffee contains 396mg — close to the entire FDA daily limit.
Does Dunkin' have more caffeine than Starbucks?
Starbucks brewed coffee is stronger — a Starbucks Grande (16oz) has 310mg vs Dunkin' Medium (14oz) at 210mg. However, Dunkin's iced coffee and cold brew are competitive: Dunkin' Large Cold Brew (347mg) vs Starbucks Venti Cold Brew (310mg). Overall Starbucks is the stronger choice for hot brewed coffee; the two chains are comparable for cold brew.
How much caffeine in a Dunkin' Refresher?
Dunkin' Refreshers use green tea extract as their caffeine source. Small: 66mg, Medium: 99mg, Large: 132mg. This is significantly less caffeine than any brewed coffee size, making Refreshers one of the lower-caffeine options at Dunkin' for those wanting a moderate boost without the full coffee dose.
Is Dunkin' coffee safe during pregnancy?
A Dunkin' Small Hot Coffee (150mg) is within the ACOG pregnancy guideline of 200mg/day but leaves little room for other caffeine sources. A Medium (210mg) already exceeds the pregnancy limit. Pregnant women at Dunkin' should choose a Small and count it as their total daily caffeine, with no room for tea, soda, or chocolate.
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Sources: Dunkin' official nutrition information · FDA caffeine guidance · ACOG · Last reviewed March 2026