Cold Brew Coffee: Complete Caffeine Content Guide

A 240 ml serving of cold brew contains 200 mg of caffeine.

• 200 mg — caffeine in a 240 ml standard cold brew (83.3 mg/100 ml).
• 215 mg — caffeine in a 240 ml nitro cold brew (higher extraction or concentrate).
• 96 mg — typical caffeine in 240 ml drip coffee; cold brew (200 mg) is ~2× stronger by mg per serving.
• 400 mg/day is the usual adult upper limit cited by FDA/EFSA; pregnant people are advised to limit to ~200 mg/day.

What is cold brew coffee?

Cold brew is coarsely ground coffee steeped in room-temperature or cold water for extended periods (typically 12–24 hours) and then filtered. Because extraction time and coffee-to-water ratio are high, finished ready-to-drink cold brew often carries more caffeine per 100 ml than hot-brewed methods. Many shops serve either a ready-to-drink strength or a concentrate that is diluted before serving.

Caffeine content across common cold-brew and coffee drinks

This table uses measured servings from authoritative product data to compare common options — include these numbers when planning intake.

Why cold brew often has more caffeine (factors)

Extraction depends on four controllable variables:

• Grind size — finer grinds extract more quickly; most cold brew uses coarse grind but a long steep time offsets that.
• Coffee-to-water ratio — concentrates (high ratio) mean more mg per serving after dilution if under-diluted.
• Steep time — longer contact (12–24+ hours) increases total extraction including caffeine.
• Roast and origin — darker roasts have slightly less measured caffeine by volume but roast-level differences are smaller than brew method and ratio.

How long cold brew caffeine lasts — decay math and practical timing

Caffeine clearance follows an average half-life of about 5.7 hours for adults. That means caffeine roughly halves every 5.7 hours on average; use this to estimate how much stimulant remains before bed. These numbers are population averages; genetic factors, medications, pregnancy, liver function, and smoking change half-life.

Example: a 200 mg cold brew consumed at 4 PM would still deliver roughly 96 mg at 10 PM and about 46 mg by 4 AM — enough to affect sensitive sleepers. Use these decay numbers to schedule last caffeine for adequate sleep latency.

Low-caffeine and caffeine-free cold-brew options

If you want the cold-brew flavor with less caffeine: use decaffeinated beans (dataset: decaf coffee 240 ml ≈ 3 mg), brew with a lower coffee-to-water ratio, or blend half-decaf/half-regular. Herbal iced teas are naturally caffeine-free alternatives. For adolescents, the American Academy of Pediatrics discourages routine caffeine use and warns against energy drinks.

Brewing tips to control caffeine

• Shorten steep time: cut from 18–24 hours to 8–12 hours to lower extraction.
• Use a lower coffee-to-water ratio: fewer grams per liter reduces mg per serving.
• Dilute concentrates properly: many commercial concentrates are meant to be diluted 1:1 or more.
• Track intake: tools like CoffeeLog can log drinks and compute daily totals against limits (FDA/EFSA 400 mg/day; pregnancy ~200 mg/day).

Health, safety, and common limits

Regulatory and clinical authorities provide practical limits: FDA and EFSA commonly cite up to 400 mg/day as a safe upper limit for healthy adults; pregnant people are advised to keep intake near or under 200 mg/day (consult a clinician). For adolescents, avoid energy drinks and be conservative — the American Academy of Pediatrics recommends limiting or avoiding caffeine. If you suspect caffeine overdose (palpitations, severe agitation, vomiting), seek emergency care.

Practical summary

Cold brew is often stronger than hot-brewed drip coffee because of brew ratio and long steep time: a 240 ml serving commonly measures 200 mg. Use dilution, brew time, and bean selection to control strength, and apply the ~5.7-hour half-life to time intake relative to sleep. Track servings and totals with a log (for example, CoffeeLog) to stay within safe limits per FDA/EFSA guidance.

How should I add cold brew to other drinks without exceeding daily limits?

A single 240 ml cold brew contains 200 mg of caffeine according to the dataset used on this site, so plan combinations around that 200 mg baseline. The U.S. Food and Drug Administration puts a common safe upper limit for healthy adults at 400 mg/day, and the European Food Safety Authority gives the same 400 mg/day recommendation; use those limits when adding drinks (U.S. FDA, EFSA).

Intake math is simple addition of labeled milligrams: a 240 ml cold brew (200 mg, dataset) plus a 250 ml Red Bull (80 mg, dataset) equals 280 mg total (dataset math: 200 mg + 80 mg = 280 mg). Cumulative intake is the running total of mg consumed across products.

Cumulative intake is the running total of mg consumed across products.

Examples using dataset values: cold brew (240 ml = 200 mg) plus a 240 ml latte (68 mg) totals 268 mg (dataset: 200 + 68 = 268 mg); cold brew plus a 100 mg caffeine pill totals 300 mg (dataset: 200 + 100 = 300 mg). Use the safe daily limit by body weight tool to convert the 400 mg guideline to your size, and log additions automatically with the caffeine half-life calculator to see how remaining mg decline over time.

How should pregnancy change my cold brew choices?

Pregnant people are generally advised to limit caffeine intake to about 200 mg/day; the European Food Safety Authority explicitly recommends keeping daily caffeine near or below 200 mg during pregnancy (EFSA). One 240 ml cold brew (200 mg, dataset) therefore reaches that pregnancy guideline on its own.

Pregnancy caffeine guidance is conservative to reduce fetal exposure and is stated as a daily mg cap by major authorities.

Practical options if pregnant: choose a 240 ml decaf coffee at roughly 3 mg (dataset) instead of a full-strength cold brew, blend half-decaf/half-regular to halve mg, or swap for caffeine-free iced options; see the decaf coffee guide for methods and numbers. Remember that pregnancy can slow caffeine clearance, so the same 200 mg may persist longer than in non-pregnant adults; consult a clinician for personalized advice.

Will a 240 ml cold brew help a workout, or is the dose too high for safety?

A 240 ml cold brew supplies 200 mg of caffeine (dataset), which is in the range many studies find ergogenic for some types of exercise for average adults. Ergogenic means enhancing physical performance.

For practical dosing, many performance guides recommend roughly 3–6 mg/kg; use our caffeine dosage guide to match 200 mg against your body weight — for example, 200 mg equals about 2.9 mg/kg for a 70 kg person (dataset math: 200 mg ÷ 70 kg = 2.86 mg/kg).

If you plan to use cold brew pre-workout, test tolerance at lower doses first and avoid stacking other high-caffeine products that could push you past the 400 mg/day adult upper limit (the FDA and EFSA set 400 mg/day; U.S. FDA, EFSA). See our pre-workout caffeine guide for timing and safety tips and avoid high doses if you have cardiovascular issues.

How does afternoon cold brew affect sleep compared with the 400 mg study results?

Drake et al. (2013) found that a 400 mg dose taken 6 hours before bedtime reduced objective sleep time by more than an hour, so a 200 mg 240 ml cold brew taken 6 hours before bed has a smaller but still measurable effect for sensitive sleepers (Drake et al., 2013). The dataset lists a 240 ml cold brew as 200 mg, which is 50% of the 400 mg tested in that study (dataset math: 200 mg / 400 mg = 0.5).

Sleep latency is the time it takes to fall asleep.

Use the standard first-order elimination model with a population-average half-life of 5.7 hours to estimate remaining stimulant: 200 mg × 0.5^(6/5.7) ≈ 96 mg remaining at 6 hours (dataset math using 5.7 h half-life, 6 h ≈ 48% remaining). Because Drake et al. showed measurable sleep loss after 400 mg at 6 hours, expect smaller but meaningful sleep disruption from a 200 mg cold brew at the same interval; run personalized timing with our last-cup-before-bed tool and check your sensitivity the day before important sleep.

How variable is caffeine between commercial cold-brew servings?

Commercial cold-brew caffeine varies by serving size and recipe: the dataset lists Starbucks Cold Brew (Grande, 473 ml) as 205 mg and Dunkin' Cold Brew (Medium, 710 ml) as 260 mg, so mg per 100 ml differs notably between brands (dataset values).

Batch variability is the difference in mg per serving between brands and preparations.

Compare mg per 100 ml to see concentration: Starbucks 205 mg ÷ 473 ml = 43.4 mg/100 ml (dataset math), while Dunkin' 260 mg ÷ 710 ml = 36.6 mg/100 ml (dataset math). A 240 ml ready-to-drink lab sample that measures 200 mg yields 83.3 mg/100 ml (dataset math: 200 mg ÷ 240 ml). Use our side-by-side drink comparison to compare brands, and consult product pages like Trader Joe's Cold Brew or Starbucks Cold Brew for their reported values when planning intake.

Bottom line

A standard 240 ml cold brew contains 200 mg of caffeine according to the dataset used on this site, and nitro cold brew of the same volume is listed at 215 mg (dataset). Healthy adults are commonly advised to keep total daily caffeine near or below 400 mg by the U.S. FDA and EFSA; pregnant people are advised to keep daily intake near or below 200 mg by EFSA (U.S. FDA, EFSA).

Caffeine elimination follows first-order kinetics with a population-average half-life of 5.7 hours, so a 200 mg 240 ml cold brew yields roughly: after 3 hours ≈ 139 mg remaining (200 × 0.69), after 6 hours ≈ 96 mg remaining (200 × 0.48), after 9 hours ≈ 67 mg remaining (200 × 0.33), and after 12 hours ≈ 46 mg remaining (200 × 0.23) using the decay model. Because a 400 mg dose given 6 hours before bed reduced sleep by >1 hour in Drake et al. (2013), expect a 200 mg cold brew 6 hours before bed to have a smaller but potentially meaningful effect for sensitive sleepers (Drake et al., 2013).

• If you need to limit mg: swap to decaf (240 ml ≈ 3 mg, dataset) or dilute concentrates; see the decaf coffee guide.
• To combine drinks safely, add dataset mg values and keep the total under 400 mg for most adults; use the safe daily limit by body weight tool and the half-life calculator to estimate remaining mg over time.
• For workouts, 200 mg can be an effective ergogenic dose for many people but compare it to weight-based recommendations in our caffeine dosage guide before routine use.