How much caffeine is in Tim Hortons Double-Double (Medium)?

Tim Hortons Double-Double (Medium) contains 140 mg of caffeine.

Caffeine is a stimulant molecule found in coffee and tea; this page reports the caffeine mass measured in milligrams (mg), with the 140 mg value taken from the TrackCaffeine dataset (/dataset/) for this specific 295 ml serving.

That 140 mg equates to about 47.5 mg per 100 ml (140 mg ÷ 295 ml × 100 = 47.5 mg/100 ml), with the arithmetic and source shown here as the TrackCaffeine dataset (/dataset/).

Compared to a standard 240 ml cup of drip coffee at 96 mg (other reference point), the medium Double-Double is roughly 1.5 times as caffeinated by the dataset's reference numbers (1.5×, according to TrackCaffeine, /dataset/), so the drink provides a stronger wakeful signal than a single 240 ml drip cup.

Onset and subjective effects typically appear within 15–60 minutes after ingestion and vary by individual metabolic rate and tolerance; those time ranges are described in general physiology references such as the Mayo Clinic (named here for context, not linked), and the measurable caffeine mass reported here is the starting point for those effects.

How long Tim Hortons Double-Double (Medium) stays in your system

We model caffeine clearance as first-order elimination with a population-average half-life of 5.7 hours, where half-life is the time required for the body to remove half of a substance; the 5.7-hour value is the TrackCaffeine population-average half-life used in this site's calculator (/tools/caffeine-calculator/).

Using the formula remaining = dose × 0.5^(hours / 5.7) with dose = 140 mg (TrackCaffeine dataset, /dataset/), the arithmetic gives: at 3 hours: 140 × 0.5^(3/5.7) = 140 × 0.6949 ≈ 97 mg; at 6 hours: 140 × 0.5^(6/5.7) = 140 × 0.482 = ≈ 67 mg; at 9 hours: 140 × 0.5^(9/5.7) = 140 × 0.335 = ≈ 47 mg; at 12 hours: 140 × 0.5^(12/5.7) = 140 × 0.2349 = ≈ 33 mg (all dose figures from the TrackCaffeine dataset, /dataset/).

Example timing: if the drink is finished at 15:00, the model predicts about 97 mg remaining at 18:00, 67 mg at 21:00, 47 mg at 00:00, and 33 mg at 03:00; these hour-by-hour remaining masses are calculated with the TrackCaffeine half-life and the 140 mg dose (/tools/caffeine-calculator/, /dataset/).

One medium Double-Double provides 35% of the 400 mg daily guidance for healthy adults; the 140 mg percentage and the 400 mg guideline are given by the TrackCaffeine dataset and the U.S. Food and Drug Administration respectively (140 mg from /dataset/, 400 mg/day guideline from the FDA: FDA).

You can fit up to two full medium Double-Doubles before exceeding the 400 mg daily guidance: 2 × 140 mg = 280 mg (TrackCaffeine dataset, /dataset/), which is 70% of the FDA 400 mg/day guidance (FDA: FDA), leaving about 120 mg of headroom under that guidance.

For sleep timing, avoid large doses close to bedtime because a 6-hour lead time still produces measurable sleep disruption: Drake et al. 2013 reported that 400 mg given 6 hours before bedtime reduced total sleep time by over an hour (Drake et al. 2013, named here for the sleep-effect data); using the TrackCaffeine half-life model, a 140 mg dose will still leave roughly 67 mg at six hours post-dose (140 × 0.5^(6/5.7) ≈ 67 mg), which is material for sensitive sleepers and should be considered when planning a last cup (last-cup calculator).

Special groups: pregnancy guidance recommends lower daily caffeine (200 mg/day) according to EFSA, and adolescents are advised to limit intake as well; the EFSA pregnancy recommendation and 200 mg/day figure are reported in the EFSA Scientific Opinion (EFSA: EFSA 2015), so a single 140 mg medium Double-Double is 70% of 200 mg in pregnancy (TrackCaffeine dataset and EFSA guidance: /dataset/, EFSA 2015).

Within the coffee-shop category this medium Double-Double at 140 mg sits below the strongest chain brews: for example Starbucks Pike Place Brewed (Grande) is listed at 310 mg in the dataset, and Dunkin' Original Blend (Medium) is 210 mg (both values from the TrackCaffeine dataset and linked pages: Starbucks Pike Place Brewed (Grande) and Dunkin' Original Blend (Medium)).

Against espresso-based Starbucks drinks in the dataset, 140 mg is similar to a Grande Caffè Latte at 150 mg and higher than a single Blonde espresso shot at 85 mg; those comparison items are in the TrackCaffeine dataset and their pages are Starbucks Caffè Latte (Grande) and Starbucks Blonde Espresso (shot) respectively.

Compared to a standard 240 ml drip coffee (96 mg), the medium Double-Double delivers a noticeably larger caffeine dose (1.5× drip), so for someone gauging overall daily intake this drink is closer to higher-strength chain options than to milder brewed cups (reference numbers from TrackCaffeine: /dataset/).

What changes the number for Tim Hortons Double-Double (Medium)

Serving size is the single largest driver of caffeine mass: the 140 mg figure is specific to the 295 ml medium serving reported in the TrackCaffeine dataset (/dataset/); ordering a larger or smaller size will change the dose proportionally if brew strength is similar.

Recipe and preparation move the number next: the classic Double-Double combines coffee with two servings of cream and two of sugar, but the caffeine contribution comes from the brewed coffee itself and will vary by brew strength, extraction time and bean roast; such preparation-driven variation is the reason the dataset gives a single typical value rather than a precise universal value (Tim Hortons guide and /dataset/).

Espresso-based substitutions or extra shots change caffeine a lot; for comparison a single espresso is listed as 63 mg in the reference points and the Starbucks Blonde espresso shot is listed as 85 mg in the dataset, so replacing brewed coffee with extra espresso shots will raise the total caffeine markedly (see the espresso and shot entries in the TrackCaffeine dataset, /dataset/).

Batch-to-batch roast and bean source create natural variation: cup-to-cup differences occur because different beans and roast levels have different caffeine densities; TrackCaffeine reports median/typical values and notes that on-premise grind and extraction differences cause real-world spread (/dataset/).

A decaffeinated option will be substantially lower than the 140 mg number; exact mg for decaf versions are not part of this data point, and customers seeking near-zero caffeine should consult Tim Hortons' menu or the Tim Hortons tea and decaf guide (Tim Hortons Tea guide).

Where this figure comes from

The 140 mg figure comes from the TrackCaffeine open dataset entry for Tim Hortons Double-Double (Medium), which aggregates manufacturer declarations, published nutrition facts, and lab-verified entries where available; the dataset entry is linked here for transparency (/dataset/).

Published values disagree for reasons already discussed — portion size, brew strength, bean, and measurement method — and we will update the 140 mg value if Tim Hortons publishes a different lab-measured value or if an authoritative database such as USDA FoodData Central posts a revised entry; the update policy follows the TrackCaffeine dataset procedures (see Tim Hortons guide and the dataset page, /dataset/).

Bottom line

Key facts: medium Tim Hortons Double-Double = 140 mg caffeine in 295 ml (TrackCaffeine dataset, /dataset/); that is ~47.5 mg per 100 ml and ~1.5× a 240 ml drip cup at 96 mg (TrackCaffeine reference, /dataset/).

One drink is 35% of the FDA 400 mg/day guidance (140 mg and 400 mg cited from TrackCaffeine and FDA, respectively: /dataset/, FDA); expected remaining caffeine at 6 hours is ≈67 mg using the TrackCaffeine half-life model (140 × 0.5^(6/5.7) ≈ 67 mg, calculator, /dataset/).