Source-backed comparison
Monster vs Coffee Caffeine: Which Has More?
Compare a UK 500 ml Monster Original Green can with a representative cup of brewed coffee and see calculated caffeine remaining over time.
| Measure | Monster Energy Original Green | Brewed coffee |
|---|---|---|
| Named serving | 500 ml can | 8 fl oz / 237 ml |
| Market | UK | General reference |
| Caffeine per serving | 160 mg | 95 mg |
| Caffeine per 100 ml | 32.0 mg | 40.1 mg |
| Value basis | Manufacturer listed | Authoritative reference |
| Estimated after 5 hours | 80 mg | 47.5 mg |
| Absolute difference | 65 mg | 65 mg |
| Difference vs lower serving | 68.4% | 68.4% |
How to interpret the comparison
- The named UK Monster can contains 160 mg across 500 ml; the general coffee reference contains 95 mg across 237 ml.
- Monster has more caffeine in the full named serving, while the representative coffee is more concentrated per 100 ml.
- Coffee brewing varies, and other Monster products or countries may use different formulations.
Guide updated 2026-09-24
Coffee is a family of servings, not one caffeine number
The short answer
The headline comparison uses a representative brewed coffee, not every coffee. A café recipe, preparation and serving size can change the comparison substantially.
Dated Costa reference: the recorded guide covers 30 April–26 August 2026. A newer recipe has not been verified; confirm the current menu before relying on an exact amount.
Dated Starbucks UK reference: these records use the Spring 2026 guide. Newer seasonal guides are available; current recipes have not yet been reconciled with this snapshot.
Inspect the documented servings
These values come from the linked catalogue records. A source-backed record is not a measurement of your drink or a guarantee of a current recipe.
| Drink / market | Serving | Caffeine | Per 100 ml | Evidence / action |
|---|---|---|---|---|
| Monster Energy Original GreenUK | 500 ml can | 160 mg | 32 mg (calculated) | Manufacturer listedVerified source record · Reviewed 2026-08-21Use this dose · Compare |
| Brewed coffeeGeneral reference | 8 fl oz / 237 ml | 95 mg | 40.1 mg (calculated) | Authoritative referenceVerified source record · Reviewed 2026-08-21Use this dose · Compare |
| EspressoGeneral reference | 1 fl oz / 30 ml | 63 mg | 210 mg (calculated) | Authoritative referenceVerified source record · Reviewed 2026-08-21Use this dose · Compare |
| Costa Signature Blend LatteUK | Medium | 200 mg | Not documented | Calculated from manufacturer tableVerified source record · Reviewed 2026-08-23Use this dose · Compare |
| Starbucks UK Caffè LatteUK | Grande | 89.1 mg | Not documented | Manufacturer listedVerified source record · Reviewed 2026-08-23Use this dose · Compare |
Bars use the selected measure; numbers remain visible in both units. No bar is drawn for an undocumented concentration. Per 100 ml = serving caffeine × 100 ÷ documented volume.
Do not convert cans into a universal number of coffees
Dividing one caffeine total by another produces a ratio between those two named servings. It does not establish how many home-brewed cups, espresso shots or café lattes equal a can in general. Reference coffee values and branded recipes have different evidence scope.
Quantity is not perceived effect
A higher recorded dose is more caffeine by quantity. It does not predict the strength or duration of an individual experience. Use the same model assumptions when comparing timelines and preserve the uncertainty in the starting dose.
Sources and scope
- Monster Energy UK product informationUK Original Green product page. Source reviewed 2026-08-21.
- USDA FoodData CentralRepresentative reference value; café recipes and extraction vary. Source reviewed 2026-08-21.
- Costa Coffee UK store guideGuide applies 30 April–26 August 2026. Source reviewed 2026-08-23.
- Starbucks UK Nutrition & Allergen GuideCore beverage guide version 16 April 2026; Espresso table. Milk substitutions and other customisations can change the finished drink. Source reviewed 2026-08-23.
Educational information, not medical advice. Published, calculated and approximate values have different limits. Check the current product label or recipe when an exact amount matters.
Calculated five-hour timeline
This table applies the same exponential half-life equation to both starting amounts. It does not show measured blood levels or predict which drink will affect a particular person more.
| Hours after serving | Monster Energy Original Green | Brewed coffee |
|---|---|---|
| 0 | 160 mg | 95 mg |
| 3 | 105.6 mg | 62.7 mg |
| 5 | 80 mg | 47.5 mg |
| 8 | 52.8 mg | 31.3 mg |
| 10 | 40 mg | 23.8 mg |
| 12 | 30.3 mg | 18.0 mg |
Sources
- Monster Energy UK product informationUK Original Green product page.
- USDA FoodData CentralRepresentative reference value; not a promise for every bean or brewing method.
Find lower-caffeine alternatives to Monster Energy Original Green or compare drinks against a bedtime target.