Item analysis
Caffeine in Diet Coke
by Coca-Cola
See exactly how much caffeine is in Diet Coke, how it compares with coffee and energy drinks, and whether this serving lands in the low, moderate, high, or very high range.
Caffeine per serving
Per 330ml can
13.9mg per 100ml
Assessment
Diet Coke falls into the moderate caffeine range based on its serving strength and sits above 37% of beverages in the database.
Nutrition
Quick facts
0
Calories per serving
0g
Sugar per serving
Caffeine context
How it compares
This drink has more caffeine than 37% of beverages in our database.
Diet Coke: 46mg per serving
Decaf Coffee
5mg
Green Tea
28mg
Coca-Cola
34mg
Black Tea
50mg
Instant Coffee
65mg
Red Bull
80mg
Filter Coffee
150mg
Daily Limit (FDA)
400mg
Smart Caffeine
Looking for clean, measured caffeine without the crash? Smart Caffeine uses the same caffeine + L-theanine stack that research supports for focused energy.
Editorial recommendation
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FAQ
Frequently asked questions
How much caffeine is in Diet Coke?+
Diet Coke contains 46mg of caffeine per 330ml can.
Is Diet Coke high in caffeine?+
With 46mg per serving, Diet Coke is considered moderate in caffeine compared to other soft drinks products.
How does Diet Coke compare to coffee?+
A typical cup of instant coffee has 65mg of caffeine. Diet Coke has 46mg, which is less than coffee.
How much caffeine is in Diet Coke per 100ml?+
Diet Coke contains 13.9mg of caffeine per 100ml.