Celsius vs Red Bull: Which Energy Drink Is Better?

Celsius and Red Bull get compared constantly, usually as "the healthy one" versus "the original." The labels tell a more interesting story. Red Bull is actually the lower-caffeine can, and Celsius's real advantage is that it has no sugar.

Here's how they compare can for can, and which one makes more sense on a workday.

Celsius vs Red Bull: side by side

Figures from published product labels as of October 2026. Formulas can vary by region and flavor, so check the can you're holding.

Caffeine: Celsius has more, by a lot

This surprises a lot of people. Red Bull has the reputation, but per ounce it's one of the milder energy drinks on the shelf. Celsius packs nearly twice the caffeine per ounce.

The FDA has cited 400mg a day as an amount not generally associated with negative effects in healthy adults. One Celsius uses half of that. One small Red Bull uses a fifth. If you're caffeine-sensitive, already drinking coffee, or tend to have a second can in the afternoon, that difference matters more than anything else on the label. For the full Celsius caffeine lineup, see Is Celsius bad for you?

Sugar, calories and sweeteners

This is where Celsius wins clearly over original Red Bull. An 8.4 oz Red Bull carries 27 grams of sugar and 110 calories, mostly from sugar and glucose. Bigger cans scale up from there. Celsius has no sugar and about 10 calories.

If sugar is your concern, though, Red Bull Sugarfree closes that gap. It has zero sugar and 10 calories, with the same 80mg of caffeine as the original. The trade-off is the sweetener: Red Bull Sugarfree uses acesulfame K plus either aspartame or sucralose depending on the can, while Celsius Original uses sucralose. All are FDA-approved. For what zero-calorie drinks do and don't do for your weight, see do zero-calorie energy drinks cause weight gain.

What else is in each can

Red Bull keeps it simple: caffeine, taurine and four B vitamins (niacin, B6, B12 and pantothenic acid), plus 105mg of sodium. Nothing hidden in a blend.

Celsius adds more. Its 1,810mg proprietary blend includes taurine, guarana, green tea extract, glucuronolactone and ginger, along with vitamin C, B vitamins and chromium. Because it's a blend, you get the total but not the individual doses. The green tea extract is behind most of Celsius's metabolism marketing, and any thermogenic effect is modest at best.

Neither one is a hydration drink. Red Bull's 105mg of sodium is a little more than Celsius's, but neither comes close to replacing what you lose sweating through a hot shift.

Price per can

They land close to each other. A 12-pack of 8.4 oz Red Bull commonly runs around $22 to $24, or roughly $1.85 to $2 a can, and single cans are more. Celsius in a 12-pack typically lands around $1.75 a can online and drops lower on sale. Gas-station singles run higher for both.

The bigger difference is caffeine per dollar. Because a Celsius has about two and a half times the caffeine of a small Red Bull, it delivers more caffeine for the money. Whether that's a good thing depends on how much caffeine you actually want.

Powder changes the math for both. Before Work Fuel is $1.67 a serving, or $1.33 on subscription. We broke down the full cost comparison in energy drink powder vs cans.

Celsius vs Red Bull: which is better for work?

• Pick Celsius if you want zero sugar and a strong single dose, and you're not stacking it with much other caffeine.
• Pick Red Bull Sugarfree if you want zero sugar and a gentler 80mg dose. On a long day, it's easier to space two of these out than to manage one 200mg can.
• Skip original Red Bull as a daily habit. Twenty-seven grams of sugar per small can adds up fast over a work week.

The common problem with every can is that the dose is fixed. You get 80mg or 200mg whether it's a short day or a 14-hour one.

Before Work Fuel is a powdered energy drink at 150mg of caffeine per scoop: one for a normal day, two for a long one. It's zero sugar, with 80mg sodium, 75mg potassium and seven B vitamins per scoop, and its key actives are printed at stated amounts. Made in the USA with global ingredients and third-party tested. You can see the rest of our lineup in the Energy collection.

If you're trying to cut back on canned energy drinks altogether, start with what to drink instead of energy drinks, or grade any can on the shelf with our healthiest energy drinks ranked framework.

Frequently asked questions

Does Celsius have more caffeine than Red Bull?
Yes. A 12 oz Celsius has 200mg of caffeine, while an 8.4 oz Red Bull has 80mg. Even a 16 oz Red Bull has about 151mg. Per ounce, Celsius has nearly twice the caffeine.

Is Celsius healthier than Red Bull?
Celsius is healthier than original Red Bull on sugar: zero grams versus 27 grams per small can. Red Bull is the gentler choice on caffeine. Red Bull Sugarfree has zero sugar and only 80mg of caffeine, which makes it a reasonable middle ground.

How much sugar is in Red Bull vs Celsius?
An 8.4 oz original Red Bull has 27 grams of sugar and 110 calories. Celsius Original and Red Bull Sugarfree both have zero sugar and about 10 calories.

How many Red Bulls equal one Celsius?
About two and a half 8.4 oz Red Bulls equal the caffeine in one 12 oz Celsius, since 80mg times 2.5 is 200mg.

Which is cheaper, Celsius or Red Bull?
They're close. In a 12-pack, both commonly land around $1.75 to $2 a can depending on the store and sales. Celsius delivers more caffeine per dollar because each can has more caffeine.

What sweetener is in Red Bull Sugarfree and Celsius?
Celsius Original uses sucralose. Red Bull Sugarfree uses acesulfame K plus either aspartame or sucralose, depending on the can. All are FDA-approved.

Is Celsius or Red Bull better before work?
It depends on your day. Red Bull Sugarfree's 80mg is easier to space out over a long shift, while one Celsius delivers 200mg at once. A powder like Before Work Fuel lets you choose 150mg or 300mg depending on how long the day is.

Celsius is a registered trademark of Celsius Holdings, Inc. Red Bull is a registered trademark of Red Bull GmbH. Blue Collar Nutrition is not affiliated with, sponsored by, or endorsed by either company. Figures are drawn from publicly available product labels and retail listings as of October 2026 and may change. Always check the label on the can.