Dunkin' hot coffee vs Tim Hortons coffee: caffeine compared
Dunkin' hot coffee (14 oz (medium)) has 210 mg of caffeine, 5 mg more than Tim Hortons coffee (14 oz (medium), 205 mg) — 1.0× as much per serving. Per fluid ounce, Dunkin' hot coffee is the stronger drink: 15.0 mg/oz versus 14.6 mg/oz.
| Dunkin' hot coffee | Tim Hortons coffee | |
|---|---|---|
| Serving | 14 oz (medium) | 14 oz (medium) |
| Caffeine per serving | 210 mg | 205 mg |
| Per fl oz | 15.0 mg | 14.6 mg |
| Share of 400 mg/day | 52% | 51% |
| Servings to reach 400 mg | 1.9 | 2.0 |
| Hours until under 50 mg | 10.4 h | 10.2 h |
| Last one for an 11 PM bedtime · standard (50 mg) | 12:39 PM | 12:49 PM |
| Last one for an 11 PM bedtime · sensitive (25 mg) | 7:39 AM | 7:49 AM |
| Share of the 200 mg pregnancy limit | 105% | 102% |
One serving of each, over 16 hours
Common questions
Which has more caffeine, Dunkin' hot coffee or Tim Hortons coffee?
Dunkin' hot coffee (14 oz (medium)) has about 210 mg versus 205 mg in Tim Hortons coffee (14 oz (medium)): 5 mg more, or 1.0× as much.
Which is stronger per ounce, Dunkin' hot coffee or Tim Hortons coffee?
Dunkin' hot coffee: about 15.0 mg per fl oz versus 14.6 mg for Tim Hortons coffee. Serving size decides the total you actually drink.
How many Tim Hortons coffee servings equal one Dunkin' hot coffee?
About 1.0 servings of Tim Hortons coffee (14 oz (medium)) match the caffeine in one Dunkin' hot coffee (14 oz (medium)).
When should I stop drinking Dunkin' hot coffee or Tim Hortons coffee before bed?
For an 11 PM bedtime with a 50 mg limit and a 5-hour half-life: last Dunkin' hot coffee by 12:39 PM, last Tim Hortons coffee by 12:49 PM. Half-life varies from about 1.5 to 9.5 hours between people.
Method
Caffeine per labeled serving, from the same drink table every calculator here uses (FDA/USDA reference amounts and manufacturer labels; see caffeine content of every drink). Brewed drinks vary batch to batch, so read these as typical values. Decay uses a 5-hour average half-life with a 45-minute absorption ramp; cutoff = bedtime − 5 h × log₂(dose ÷ limit). Percentages use the FDA's 400 mg/day figure for healthy adults and the 200 mg/day limit ACOG gives for pregnancy.
Source — Dunkin' hot coffee: CSPI caffeine chart (Dunkin' Coffee, 14 oz medium), checked 2026-10-13.
Source — Tim Hortons coffee: Tim Hortons R&D caffeine content sheet, Canada (May 2017), checked 2026-10-13. Original Blend, medium. Hosted copy of the Tim Hortons sheet; Canada only.