A long black with one espresso shot has ~63 mg of caffeine; with two shots it’s ~125–150 mg, since the drink is espresso over hot water.
A long black is espresso first, then water. That’s the whole trick. Hot water goes in the cup, a fresh espresso is pulled directly over it, and the crema stays intact. The taste is bolder than an americano because the water volume is smaller and the crema isn’t washed away. In many cafés across Australia and New Zealand, baristas build it with a double shot by default, though some shops use a single shot based on size or house style.
How Many MG Of Caffeine In A Long Black?
If you want one clean number, start with espresso. A standard 1-oz shot averages about 63 mg of caffeine based on widely cited nutrition data. A long black simply adds hot water to that espresso, so the caffeine total tracks the number of shots. One shot long black: ~63 mg. Double shot long black: ~126 mg on paper, often landing higher in busy chains that pull slightly larger shots.
Why The Range Exists
Caffeine in espresso isn’t fixed. Bean species, roast, grind, yield, and extraction time all move the needle. A robusta-heavy blend can bump the number; a short ristretto can drop it. Water doesn’t change the caffeine count, only the strength per sip. That’s why two long blacks that look alike can feel different.
Quick Reference: Typical Caffeine By Build
This table gives ballpark totals for common builds. Use it to pick the strength you want.
| Build | Caffeine (mg)* | Notes |
|---|---|---|
| Single-Shot Long Black (≈1 oz espresso + 3–4 oz water) | ~63 | Based on average espresso per shot. |
| Double-Shot Long Black (≈2 oz espresso + 3–4 oz water) | ~125–150 | Range covers common shop variance. |
| Double Ristretto Long Black | ~90–120 | Shorter shots; often less caffeine per shot. |
| Double Lungo Long Black | ~130–170 | Longer shots can extract more caffeine. |
| Arabica-Only Blend (Double) | ~110–140 | Typical range with arabica beans. |
| Robusta-Forward Blend (Double) | ~140–190 | Robusta beans carry more caffeine. |
| Decaf Long Black (Double) | ~4–12 | Small residual caffeine remains. |
*Estimates for brewed espresso placed over hot water. Water volume changes strength, not total caffeine.
Long Black Caffeine MG By Single Or Double Shot
Think in shots, not ounces of liquid in the cup. A long black with a single shot clocks in near the well-known espresso average. A double stacks that total. If your shop lists “strong” or “extra strong,” that usually means an extra shot or a longer pull, which can raise the number again.
Source-Backed Benchmarks You Can Trust
Health and nutrition references peg a 1-oz espresso at about 63 mg caffeine; that’s the anchor for long black math. Mid-article is the right place to stress safety, too: the European Food Safety Authority notes daily intakes up to 400 mg for healthy adults are generally acceptable. Those two points let you plan orders with a clear ceiling in mind.
For the espresso anchor, see the Mayo Clinic caffeine chart. For daily intake guidance, see the EFSA caffeine advice.
How Many MG Of Caffeine In A Long Black? (With Real-World Variance)
Back to the question, how many mg of caffeine in a long black? The honest answer is a tight band around the espresso base. In a small café that pulls classic shots, single sits near ~63 mg and double near ~126 mg. In chains that pour slightly larger shots, a double can nudge past ~150 mg. If the barista uses a lungo recipe or a robusta-heavy blend, it can climb more.
What Counts As A “Shot” Changes The Total
Shops don’t define a shot in exactly the same way. Some aim for 25–30 ml; others run longer to 35–40 ml, and that extra yield can carry more caffeine. On the flip side, a ristretto shot (shorter yield) often delivers a punchy taste with somewhat less caffeine per shot. If you’re sensitive, ask for a single or a double ristretto long black to keep flavor while trimming the total.
Water First, Espresso Second
Technique matters. A true long black pulls espresso over hot water, which protects the crema and arrests agitation. Taste stays vivid, but the caffeine total still equals the shots in the cup. If you pour water into espresso after the fact, you’re closer to an americano. Flavor shifts, yet the caffeine math stays tied to the number of shots.
Picking Your Strength Without Guesswork
If You Want A Gentle Lift
Order a single-shot long black. You’ll land near ~63 mg, which is about two-thirds of an average 8-oz drip coffee. It still tastes punchy because of the crema and smaller water dose.
If You Want A Firm Push
Get a double-shot long black. Expect ~125–150 mg depending on beans and yield. This is the most common build in parts of Australia and New Zealand, so if you don’t specify, you may get two shots by default.
If You’re Sensitive To Caffeine
Ask for decaf or a single ristretto. Decaf long blacks usually carry a small residual amount (often under 10 mg per shot), and a ristretto trims exposure without losing body. Space cups across the day to stay under your personal limit.
Factors That Change Caffeine In A Long Black
These knobs shape the final number. Baristas use them daily; you can use them to guide orders.
| Factor | Effect On Caffeine | Practical Tweak |
|---|---|---|
| Bean Species (Arabica vs Robusta) | Robusta carries more caffeine per gram. | Pick arabica-only blends for a lower total. |
| Roast Level | Light roasts can retain slightly more caffeine by mass. | Choose a darker roast if you want a small reduction. |
| Shot Style (Ristretto/Lungo) | Shorter shots trend lower; longer shots trend higher. | Ask for ristretto for punchy taste with less caffeine. |
| Yield Per Shot | Bigger yields can extract more caffeine. | Request classic 25–30 ml shots. |
| Grind And Contact Time | Finer grind or slower flow can lift extraction. | Stick to house recipe; avoid “extra long” pulls. |
| Number Of Shots | Each shot adds roughly one unit of caffeine. | Pick single vs double based on your target total. |
| Decaf Process | Residual caffeine remains, but small. | Choose decaf if you need the lowest number. |
Long Black vs Americano: Same Caffeine Math, Different Feel
Both drinks mix espresso and water. The americano usually uses more water and often flips the pour order, which softens perceived strength. Caffeine per shot stays the same, so totals match when the shot count matches. If you want the richer crema and a tighter flavor, keep the long black. If you want a gentler sip over a longer cup, go americano with the same number of shots.
Safe Intake And Smart Ordering
Healthy adults usually aim to stay at or under ~400 mg across the day. That’s your north star for pacing. A double long black in the morning and a single after lunch keeps many people under that line. Sensitive groups—including people who are pregnant—often use lower personal limits. When in doubt, start with a single and add shots only if you feel fine.
Barista-Level Tips To Dial Your Long Black
Ask For The Shot Count
Shops vary. A quick “single or double?” removes surprises. If the café runs big shots, that question matters even more.
Mind The Bean Blend
Menus rarely shout “robusta-heavy,” but house notes like “strong,” “bold,” or “Italian-style” can hint at it. If you want less caffeine, ask for an arabica-leaning option.
Control Timing
Save your stronger cup for when you need it. If sleep is fragile, move your last long black earlier in the day.
Pick Size For Flavor, Not Caffeine
Bigger cups usually add water, not shots. If taste feels thin, ask for a double in a smaller cup rather than more water in a larger one.
Summary You Can Act On
- One shot long black ≈ 63 mg.
- Two shots ≈ 125–150 mg in most cafés.
- Ristretto trends lower; lungo trends higher.
- Arabica blends trend lower than robusta-forward blends.
- Water changes strength, not total caffeine.
- Use a ~400 mg daily cap as a planning guardrail.
How Many MG Of Caffeine In A Long Black? (Final Word For Buyers)
You’re ordering espresso with water, so the count equals the shots. That’s the whole play. If you like a strong, compact cup, go double. If you want a lift without the jitters, go single. If taste is the goal but caffeine isn’t, pick decaf or a double ristretto. With these dials, you can tune a long black to match your day.