Mountain Dew contains 54 mg of caffeine per 12 oz can (355 ml / 12 oz). That is about 57% of the caffeine in a typical 8 oz cup of brewed coffee (about 95 mg). Concentration: 15.2 mg per 100 ml.
Track your caffeine with Unbuzz, free on the App Store.
Mountain Dew Caffeine Content by Serving
Figures are for Mountain Dew (PepsiCo).
| Serving | Volume | Caffeine | Per 100 ml | Level |
|---|---|---|---|---|
| 12 oz can | 355 ml / 12 oz | 54 mg | 15.2 mg | Low |
Source: caffeine figures from Caffeine Informer, accessed 2026-06-11. Values can vary by batch, location, and preparation; check the label or the source for the latest figures.
How Mountain Dew Compares to Coffee
At 54 mg per 12 oz can, Mountain Dew delivers about 57% of the caffeine in 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 Mountain Dew Before Bed
With caffeine's median 5-hour half-life, a 12 oz can of Mountain Dew (54 mg) needs about 0 h 34 min to fall under 50 mg, the level where most people can fall asleep normally. That puts the last call at 9:15 PM (21:15) for a 10 PM bedtime and 10:15 PM (22:15) for an 11 PM bedtime. Individual half-lives range from roughly 2 to 12 hours, so treat these as a starting point.
The Mountain Dew sleep cutoff page has last-call times for four bedtimes, and the caffeine half-life calculator personalizes the curve to your metabolism.
