Dunkin' Original Blend Coffee contains 150 mg of caffeine per Small 10 oz (296 ml / 10 oz). That is about 1.6 times the caffeine of a typical 8 oz cup of brewed coffee (about 95 mg). Concentration: 50.7 mg per 100 ml.
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Dunkin' Original Blend Coffee Caffeine Content by Serving
Figures are for Original Blend Hot Coffee (Dunkin).
| Serving | Volume | Caffeine | Per 100 ml | Level |
|---|---|---|---|---|
| Small 10 oz | 296 ml / 10 oz | 150 mg | 50.7 mg | High |
| Medium 14 oz | 414 ml / 14 oz | 210 mg | 50.7 mg | High |
| Large 20 oz | 591 ml / 20 oz | 300 mg | 50.8 mg | Very High |
| Extra Large 24 oz | 710 ml / 24 oz | 359 mg | 50.6 mg | Very High |
Source: caffeine figures from Caffeine Informer (values sourced from dunkindonuts.com), accessed 2026-06-11. Values can vary by batch, location, and preparation; check the label or the source for the latest figures.
How Dunkin' Original Blend Coffee Compares to Coffee
At 150 mg per Small 10 oz, Dunkin' Original Blend Coffee delivers about 1.6 times the caffeine of a typical 8 oz cup of brewed coffee (about 95 mg). For a wider comparison across drinks, try the caffeine comparison tool or browse the full caffeine database.
When to Stop Drinking Dunkin' Original Blend Coffee Before Bed
With caffeine's median 5-hour half-life, a Small 10 oz of Dunkin' Original Blend Coffee (150 mg) needs about 7 h 56 min to fall under 50 mg, the level where most people can fall asleep normally. That puts the last call at 2:00 PM (14:00) for a 10 PM bedtime and 3:00 PM (15:00) for an 11 PM bedtime. Individual half-lives range from roughly 2 to 12 hours, so treat these as a starting point.
The Dunkin' Original Blend Coffee sleep cutoff page has last-call times for four bedtimes, and the caffeine half-life calculator personalizes the curve to your metabolism.
