Energy Drink Caffeine Chart
Every major energy drink ranked by caffeine — sortable, searchable, updated March 2026.
✓ Last reviewed March 2026 · 35+ brands · Official nutrition panels
All Energy Drinks Ranked by Caffeine
Energy Drink Caffeine per Ounce
Caffeine per ounce is the fairest comparison — it removes the effect of can size and shows true caffeine concentration:
| Drink | Size | Total Caffeine | Caffeine per oz |
|---|---|---|---|
| Spike Hardcore Energy | 16 oz | 350 mg | 21.9 mg/oz |
| Bang Energy | 16 oz | 300 mg | 18.75 mg/oz |
| Celsius HEAT | 16 oz | 300 mg | 18.75 mg/oz |
| 5-Hour Energy (extra) | 2 oz | 230 mg | 115 mg/oz (shots are concentrated) |
| Celsius Original | 12 oz | 200 mg | 16.7 mg/oz |
| Monster Energy | 16 oz | 160 mg | 10 mg/oz |
| Red Bull | 8.4 oz | 80 mg | 9.5 mg/oz |
| Brewed coffee (reference) | 8 oz | 95 mg | 11.9 mg/oz |
Why energy shots are outliers: 5-Hour Energy and similar shots have extremely high caffeine concentration per ounce (115+ mg/oz) because they're designed to be consumed in 2oz, not 16oz. The total caffeine per serving (200mg) is similar to a standard Celsius — it's just packed into a tiny volume. Don't compare per-oz figures between shots and cans directly.
Frequently Asked Questions
Which energy drink has the most caffeine?
Among mainstream RTD (ready-to-drink) cans, Bang Energy, Celsius HEAT, Reign, and Monster Java 300 all contain 300mg per can. Spike Hardcore Energy reaches 350mg. Pre-workout supplements are significantly higher. For the highest concentration in a standard drink, energy shots (5-Hour Energy Extra: 230mg in 2oz) win on a per-ounce basis.
Is Red Bull or Monster stronger?
Monster Energy (160mg per 16oz) has double the total caffeine of a standard Red Bull (80mg per 8.4oz). However, per ounce, they're nearly identical: Red Bull is 9.5mg/oz, Monster is 10mg/oz. Monster is stronger because the can is larger, not because it's more concentrated.
How many energy drinks can I have per day?
It depends entirely on which drink and your body weight. One Bang Energy (300mg) is close to the 400mg FDA guideline for most adults. One standard Monster (160mg) leaves room for a second can plus another caffeine source for heavier individuals. Use our main caffeine calculator for your personalised limit.
Are sugar-free energy drinks safer than regular?
In terms of caffeine — no difference. Sugar-free versions (Zero Ultra Monster, Red Bull Sugar Free, Celsius Stevia) contain identical or near-identical caffeine to their full-sugar counterparts. They're lower in calories and won't cause blood sugar spikes, but the caffeine-related risks are the same.
Related Calculators
Sources: FDA · Official brand nutrition panels · USDA FoodData Central · Last reviewed March 2026