How Much Caffeine is in Starbucks Decaf Coffee?
A 240 ml cup of decaf coffee contains 3 mg of caffeine (dataset value for decaf coffee, 240 ml).
- Decaf brewed cup (240 ml): 3 mg caffeine — essentially trace amounts.
- A decaf Americano depends on the decaf espresso shots used; a standard caffeinated Americano (240 ml) is 126 mg<30 mg in practice.
- Starbucks lists many caffeinated Grande drinks (473 ml): Pike Place brewed is 310 mg205 mg
- Population-average caffeine half-life ~5.7 hours: from 3 mg, ~1.4 mg remains after 6 hours; from 63 mg, ~30 mg remains after 6 hours.
Decaf coffee caffeine basics
Decaffeination removes most, but not all, caffeine. The dataset value for a 240 ml decaf cup is 3 mg (1.2 mg/100 ml), which matches USDA FoodData Central reporting that decaf contains only a few milligrams per standard cup. That small amount is why "decaf" does not equal "caffeine-free."
How much caffeine in a decaf Americano?
An Americano is espresso shots diluted with hot water. The dataset lists a regular 240 ml Americano at 126 mg3 mg per 240 ml. If made from decaf espresso shots, expect a low-but-variable amount per shot: published sources (USDA/FDA discussions) report residual caffeine in decaf espresso can range from a couple of milligrams up to low double-digits per shot depending on bean, roast and decaffeination method. Practically, most Starbucks-made decaf Americanos will be well under 30 mg total.
Decaf espresso and specialty decaf drinks
The dataset gives single espresso (30 ml) at 63 mg for caffeinated espresso, and a Blonde espresso shot is 85 mg
Use these dataset numbers to compare how tiny decaf truly is next to cafe standards. The table shows common items and their exact dataset caffeine. Decaf level depends on method (chemical solvent vs Swiss Water process), roast (lighter roasts can retain slightly more measurable caffeine), and extraction time. A 240 ml pour-over in the dataset is 145 mg for regular coffee — the same cup decaffeinated would be close to the 3 mg dataset value only if decaf beans and procedure were used. Instant "decaf" and single-serve pods can also vary; the dataset doesn't list decaf K-Cup numbers, so check pack labeling. Use the population-average half-life of 5.7 hours: caffeine roughly halves every 5.7 hours. The dataset-supplied approximations are: after 3 h ≈ 69% remains; 6 h ≈ 48%; 9 h ≈ 33%; 12 h ≈ 23%. FDA guidance for healthy adults is up to 400 mg/day. For pregnancy, most authorities including Mayo Clinic suggest a conservative limit near 200 mg/day; the American Academy of Pediatrics discourages routine caffeine for adolescents. A decaf cup at 3 mg is negligible versus these limits, but multiple decaf drinks and hidden sources (chocolate, medications, energy products) can add up. If sleep is a concern, remember even small milligrams can affect sensitive people — the half-life math above shows how long residual caffeine persists. If you order "decaf" at Starbucks and need precision, ask whether they use decaf espresso shots or decaf brewed beans. For reliable personal tracking, log each drink in an app like CoffeeLog; logging both drink type and size will convert menu items into milligrams so you can compare to the FDA/EFSA limits and your personal sensitivity. Standard dataset values put a 240 ml decaf cup at 3 mg — trace caffeine. A decaf Americano will generally be in the single- or low-double-digit milligram range, depending on whether decaf espresso shots or decaf brewed coffee are used. When in doubt, ask your barista and record the drink in CoffeeLog or similar so you know exactly how many milligrams you consumed.Caffeine in Starbucks menu items — for comparison
Drink (serving) Caffeine (mg) Serving size Decaf coffee 3 mg 240 ml Americano 126 mg 240 ml Espresso (single) 63 mg 30 ml Starbucks Pike Place Brewed (Grande) 310 mg 473 ml Starbucks Caffè Americano (Grande) 225 mg 473 ml Starbucks Cold Brew (Grande) 205 mg 473 ml Starbucks Caffè Latte (Grande) 150 mg 473 ml How brewing, size and beans affect decaf caffeine
How long decaf caffeine affects you — decay math
Time after dose Decaf cup (3 mg) Espresso (63 mg) Starbucks Americano Grande (225 mg) Cold brew (240 ml, 200 mg) Immediately 3.0 mg 63 mg 225 mg 200 mg After 3 h (≈69%) 2.1 mg 43 mg 155 mg 138 mg After 6 h (≈48%) 1.4 mg 30 mg 108 mg 96 mg After 9 h (≈33%) 1.0 mg 21 mg 74 mg 66 mg After 12 h (≈23%) 0.7 mg 14 mg 52 mg 46 mg Health, safety and timing vs sleep
Practical tips and tracking
Bottom line
Frequently asked questions
How much caffeine is in a decaf Americano?
There is no single dataset value for a decaf Americano; a 240 ml cup made from decaf brewed coffee is about 3 mg (dataset decaf coffee). If made from decaf espresso shots, expect low but variable residual caffeine—typically in the single- to low-double-digit milligram range per cup.
Is decaf Starbucks coffee caffeine-free?
No—'decaf' is not caffeine-free. The dataset lists a 240 ml decaf cup at 3 mg. That is trace compared with regular cups (often dozens to hundreds of mg), but not zero.
Does decaf espresso still have caffeine?
Yes. The dataset lists caffeinated single espresso at 63 mg, but decaf espresso retains small residual caffeine. Exact mg per decaf shot isn’t in the dataset and varies by bean and process, typically a few milligrams per shot.
Will a decaf before bed affect sleep?
Most people will not notice effects from a single decaf cup (~3 mg), but highly sensitive people might. Because caffeine halves roughly every 5.7 hours, even small amounts can persist; track intake and avoid larger caffeinated drinks in the evening.
How much caffeine is safe per day?
FDA and EFSA guidance for healthy adults is up to 400 mg/day. For pregnancy, many sources including Mayo Clinic recommend about 200 mg/day. The American Academy of Pediatrics discourages caffeine for adolescents.
How can I track tiny amounts of caffeine across drinks?
Use a caffeine-tracking tool (for example, CoffeeLog) and log beverage type and size. The dataset value for a 240 ml decaf cup is 3 mg; adding other items will show total daily mg so you can compare to recommended limits.