Does decaf have caffeine? Every decaf option ranked

Decaf has caffeine, roughly 2 to 30mg per cup depending on what you order and where. Caffeine Informer puts a standard 8 oz cup of brewed decaf at 5.6mg, decaf instant coffee at 2.4mg and decaf tea at 4mg, while Starbucks lists its 16 oz brewed decaf at 25mg. Regular brewed coffee is 95mg per 8 oz cup by USDA FoodData Central, so decaf runs somewhere between one twentieth and one third of the caffeine you were avoiding, never zero.

Every decaf option, ranked by caffeine

The chains are all over the place

Chain decaf is not one number, because every shop uses a different decaffeinated blend and a different brew strength. Caffeine Informer's brand breakdown for a medium brewed decaf gives Starbucks 15 to 30mg, Tim Hortons 6 to 15mg, Dunkin 7 to 18mg, McCafe 8 to 14mg, Caribou 4 to 6mg and decaf K-cups 2 to 4mg. That spread matters if you drink three cups: the top of the Starbucks range is 90mg across a day, which is a real cup of coffee, while three K-cup decafs total under 12mg.

Why the lab numbers and the USDA numbers disagree

Two credible sources give two different answers for the same drink, and it is worth knowing why. USDA FoodData Central lists brewed decaf at 1mg per 100g, which works out to 2.4mg in an 8 oz cup, and flags that value as calculated rather than analysed. Independent lab work found more: a 2006 University of Florida study measured 8.6 to 13.9mg in a 16 oz serving of decaf drip coffee, and the McCusker study published in the Journal of Analytical Toxicology reported 12.0 to 13.4mg per 16 oz of Starbucks decaf brew and 3.0 to 15.8mg per decaf espresso shot. Take the lab range as the realistic ceiling and the USDA entry as the floor. Both are cited on the pages linked above, and neither one says zero.

What decaffeination actually leaves behind

Caffeine comes out of green beans before roasting, by water, by carbon dioxide or by a solvent. The bean is soaked or steamed so the caffeine migrates out, the caffeine is captured, and the flavor compounds are returned. Every method leaves a residue, and the residue varies with the bean, the process and how hard the finished coffee is brewed. That is the whole explanation for the range in the table: a strong 16 oz decaf pour over pulls more out of the same beans than a weak 8 oz cup.

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If you are drinking decaf for taste rather than just avoidance, the process on the bag is the thing to read: browse Swiss Water decaf beans on Amazon, which use no solvent and tend to keep more of the origin flavor.

Who the numbers actually matter for

For most people 5 to 25mg is background noise against a day that also includes chocolate, tea and soda. It stops being noise when the total is what you are managing: a late decaf latte pulled from two shots, plus a square of dark chocolate, plus a chocolate milk, adds up faster than any single item suggests. Count the whole day rather than the one drink you switched.

For context, the FDA cites 400mg of caffeine a day as an amount generally not associated with negative effects in healthy adults. Tolerance and health vary, so treat these numbers as information, not advice.

Related reading

• Does decaf have caffeine? The lab-tested numbers
• Caffeine in decaf espresso
• Decaf tea caffeine
• How the Swiss Water process works
• Hidden caffeine: the foods people forget to count
• The verified caffeine database
• Compare any two drinks side by side

FAQ

Does decaf coffee have caffeine? Yes. A standard 8 oz cup of brewed decaf carries about 5.6mg per Caffeine Informer, and a 16 oz Starbucks decaf is listed at 25mg. Decaffeinated is not the same as caffeine free.

How much caffeine is in decaf compared with regular coffee? Regular brewed coffee is 95mg per 8 oz cup per USDA FoodData Central against 5.6mg for decaf, so decaf is roughly one seventeenth of the caffeine at the same serving size.

What drink actually has zero caffeine? Herbal infusions that never contained tea leaves or coffee, such as rooibos, chamomile and peppermint, are listed at 0mg by USDA FoodData Central. Decaf coffee and decaf tea always keep a small residue.