Diet Barq's root beer Caffeine Compared to Everything

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Diet Barq's root beer has about 0mg of caffeine per 12 oz can. This page lines it up against every drink we have compared it to, sorted strongest first, so you can see exactly where it lands. Every number is the standard published value, sourced on each comparison page.

How Diet Barq's root beer compares

Every Diet Barq's root beer comparison

• Diet Barq's root beer vs Starbucks Pike Place (grande) (310mg per 16 oz grande)
• Diet Barq's root beer vs Bang (300mg per 16 oz can)
• Diet Barq's root beer vs Reign Total Body Fuel (300mg per 16 oz can)
• Diet Barq's root beer vs Dunkin iced coffee (medium) (297mg per 24 oz medium)
• Diet Barq's root beer vs Celsius Essentials (270mg per 16 oz can)
• Diet Barq's root beer vs Baskin Robbins Cappuccino Blast (medium) (234mg per 24 oz medium)
• Diet Barq's root beer vs 5-hour Energy Extra Strength (230mg per 1.93 oz shot)
• Diet Barq's root beer vs Dunkin hot coffee (medium) (210mg per 14 oz medium)
• Diet Barq's root beer vs Starbucks cold brew (grande) (205mg per 16 oz grande)
• Diet Barq's root beer vs Celsius (200mg per 12 oz can)
• Diet Barq's root beer vs Prime Energy (200mg per 12 oz can)
• Diet Barq's root beer vs Alani Nu (200mg per 12 oz can)
• Diet Barq's root beer vs 5-hour Energy (regular) (200mg per 1.93 oz shot)
• Diet Barq's root beer vs Super Coffee (200mg per 12 oz bottle)
• Diet Barq's root beer vs C4 Performance Energy (200mg per 16 oz can)
• Diet Barq's root beer vs Ghost Energy (200mg per 16 oz can)
• Diet Barq's root beer vs Reign Storm (200mg per 12 oz can)
• Diet Barq's root beer vs Java Monster (200mg per 15 oz can)
• Diet Barq's root beer vs RISE Nitro Cold Brew (Original Black) (180mg per 7 oz can)
• Diet Barq's root beer vs SToK Extra Bold cold brew (170mg per 12 oz serving)
• Diet Barq's root beer vs Monster (160mg per 16 oz can)
• Diet Barq's root beer vs Rockstar Original (160mg per 16 oz can)
• Diet Barq's root beer vs ZOA (160mg per 12 oz can)
• Diet Barq's root beer vs NOS Energy (160mg per 16 oz can)
• Diet Barq's root beer vs Full Throttle (160mg per 16 oz can)
• Diet Barq's root beer vs Starbucks canned Nitro (Black) (155mg per 9.6 oz can)
• Diet Barq's root beer vs La Colombe Draft Latte (155mg per 9 oz can)
• Diet Barq's root beer vs Dunkin Sparkd Energy (medium) (144mg per 24 oz medium)
• Diet Barq's root beer vs UPTIME Energy (142mg per 12 oz can)
• Diet Barq's root beer vs GURU Original (140mg per 12 oz can)
• Diet Barq's root beer vs High Brew Double Espresso (140mg per 8 oz can)
• Diet Barq's root beer vs Starbucks Doubleshot Espresso & Cream (120mg per 6.5 oz can)
• Diet Barq's root beer vs Starbucks bottled Frappuccino (Mocha) (105mg per 13.7 oz bottle)
• Diet Barq's root beer vs Dunkin Refresher (medium) (99mg per 24 oz medium)
• Diet Barq's root beer vs brewed coffee (95mg per 8 oz cup)
• Diet Barq's root beer vs Mtn Dew Kickstart (Orange Citrus) (92mg per 16 oz can)
• Diet Barq's root beer vs International Delight iced coffee (88mg per 12 oz serving)
• Diet Barq's root beer vs Red Bull (80mg per 8.4 oz can)
• Diet Barq's root beer vs Mountain Dew Zero Sugar (68mg per 12 oz can)
• Diet Barq's root beer vs Sun Drop (64mg per 12 oz can)
• Diet Barq's root beer vs espresso (63mg per 1 oz shot)
• Diet Barq's root beer vs Mountain Dew Baja Blast (59mg per 12 oz can)
• Diet Barq's root beer vs Mountain Dew (54mg per 12 oz can)
• Diet Barq's root beer vs Pure Leaf black iced tea (54mg per 18.5 oz bottle)
• Diet Barq's root beer vs Mello Yello (51mg per 12 oz can)
• Diet Barq's root beer vs OLIPOP Vintage Cola (50mg per 12 oz can)
• Diet Barq's root beer vs Gold Peak Sweet Tea (48mg per 18.5 oz bottle)
• Diet Barq's root beer vs brewed black tea (47mg per 8 oz cup)
• Diet Barq's root beer vs English breakfast tea (47mg per 8 oz cup)
• Diet Barq's root beer vs Diet Coke (46mg per 12 oz can)
• Diet Barq's root beer vs Dr Pepper (41mg per 12 oz can)
• Diet Barq's root beer vs Starbucks London Fog (40mg per 16 oz grande (40mg at every size))
• Diet Barq's root beer vs Poppi Classic Cola (40mg per 12 oz can)
• Diet Barq's root beer vs Pepsi (38mg per 12 oz can)
• Diet Barq's root beer vs Snapple iced tea (37mg per 16 oz bottle)
• Diet Barq's root beer vs Diet Pepsi (35mg per 12 oz can)
• Diet Barq's root beer vs Coca-Cola Classic (34mg per 12 oz can)
• Diet Barq's root beer vs Big Red (34mg per 12 oz can)
• Diet Barq's root beer vs Cherry Coke (34mg per 12 oz can)
• Diet Barq's root beer vs Vanilla Coke (34mg per 12 oz can)
• Diet Barq's root beer vs Twisted Tea (30mg per 12 oz bottle)
• Diet Barq's root beer vs Peace Tea (23mg per 23 oz can)
• Diet Barq's root beer vs Barq's root beer (22mg per 12 oz can)
• Diet Barq's root beer vs Lipton Iced Tea (Lemon) (21mg per 16.9 oz bottle)
• Diet Barq's root beer vs Sunkist Orange (19mg per 12 oz can)
• Diet Barq's root beer vs Sunkist Zero Sugar (19mg per 12 oz can)
• Diet Barq's root beer vs Brisk Iced Tea (Lemon) (11mg per 12 oz can)
• Diet Barq's root beer vs Arizona Green Tea (7.5mg per 8 oz serving (23 oz can holds ~21.5mg))

For context, the FDA cites 400mg of caffeine a day as an amount generally not associated with negative effects in healthy adults. Tolerance and health vary, so treat these numbers as information, not advice.

Compare it yourself

Want a matchup that is not listed? The caffeine comparison tool puts Diet Barq's root beer against any of 248 drinks, and the full caffeine chart shows everything at once.

FAQ

How much caffeine is in Diet Barq's root beer? About 0mg per 12 oz can, the standard published figure.

What has more caffeine than Diet Barq's root beer? Among the drinks compared here, Starbucks Pike Place (grande) is at the strong end with 310mg per 16 oz grande.

What has less caffeine than Diet Barq's root beer? On the lighter end, Arizona Green Tea has 7.5mg per 8 oz serving (23 oz can holds ~21.5mg).