C4 vs. Celsius
C4 wins clearly: an average Shark Score of 84 to 74 across the 8 and 24 drinks we've rated. The best C4 we've had is C4 Black Cherry (92); the best Celsius is CELSIUS Sparkling Strawberry Guava (89).
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C4 vs. Celsius by the numbers
| Measure | C4 | Celsius |
|---|---|---|
| Average Shark Score | 84Edge | 74 |
| Drinks rated | 8 | 24 |
| Scored 80 or higher | 7 (88%)Edge | 11 (46%) |
| Best drink | C4 Black Cherry (92)Edge | CELSIUS Sparkling Strawberry Guava (89) |
| Average taste0–10 | 8.4Edge | 7.2 |
| Average kick0–10 | 8.4Edge | 8.1 |
| Average look0–10 | 6.9 | 7.2Edge |
| Caffeine per canmedian (range) | 200 mg (200–200) | 200 mg (100–300) |
| Caffeine per fl ozmedian | 12.5 mg | 16.7 mg |
| Zero-sugar drinks | 8 of 8 | 24 of 24 |
Brand numbers cover only the drinks we've rated, so they can shift as we review more. “Edge” marks the better number where higher is better; caffeine is a preference, not a score.
Best vs. best
The top-rated C4 against the top-rated Celsius.
| Measure |  C4 Black Cherry |  CELSIUS Sparkling Strawberry Guava |
|---|---|---|
| Shark Score | 92Edge | 89 |
| Look | 7.8/10Edge | 7/10 |
| Taste | 9.4/10Edge | 8.8/10 |
| Kick | 7.9/10 | 9/10Edge |
| Caffeine | 200 mg | 200 mg |
| Can size | 16 fl oz | 12 fl oz |
| Caffeine per fl oz | 12.5 mg | 16.7 mg |
| Zero sugar | Yes | Yes |
| Buy | Price for C4 Black Cherry | Price for CELSIUS Sparkling Strawberry Guava |
Top 5 of each
C4 Energy
-
C4 Black CherryC4 · 200 mg
Shark Score 92
-
C4 Twisted LimeadeC4 · 200 mg
Shark Score 91
-
C4 Frozen BombsicleC4 · 200 mg
Shark Score 89
-
C4 STARBURST StrawberryC4 · 200 mg
Shark Score 84
-
C4 Watermelon BurstC4 · 200 mg
Shark Score 83
Celsius
-
CELSIUS Sparkling Strawberry GuavaCelsius · 200 mg
Shark Score 89
-
CELSIUS Sparkling Tropical VibeCelsius · 200 mg
Shark Score 88
-
CELSIUS Sparkling Green Apple CherryCelsius · 200 mg
Shark Score 87
-
CELSIUS Sparkling Fuji Apple PearCelsius · 200 mg
Shark Score 86
-
CELSIUS Sparkling OrangeCelsius · 200 mg
Shark Score 84
C4 vs. Celsius questions
Is C4 better than Celsius?
C4 wins clearly: an average Shark Score of 84 to 74 across the 8 and 24 drinks we've rated. The best C4 we've had is C4 Black Cherry (92); the best Celsius is CELSIUS Sparkling Strawberry Guava (89).
Which has more caffeine, C4 or Celsius?
A typical C4 and a typical Celsius both have 200 mg of caffeine per can. The strongest C4 we've rated is C4 Black Cherry (200 mg in 16 fl oz); the strongest Celsius is CELSIUS ESSENTIALS Sparkling Cherry Limeade (300 mg in 20 fl oz). Can sizes differ, so compare caffeine per fluid ounce too: 12.5 mg vs. 16.7 mg (median).
What's the best C4 flavor? And the best Celsius?
By Shark Score, the best C4 is C4 Black Cherry (92) and the best Celsius is CELSIUS Sparkling Strawberry Guava (89). See every C4 drink ranked and every Celsius drink ranked.
Which has more sugar-free options, C4 or Celsius?
Of the drinks we've rated, 8 of 8 C4 drinks and 24 of 24 Celsius drinks are zero sugar. Formulas change, so check the can.