PauseCafé › Caffeine content › Instant Coffee
How much caffeine is in instant coffee?
60 to 80 mg
For a 240 ml cup made with one heaped teaspoon. That is roughly a third less than filter coffee, and the gap surprises people who assume instant is weaker only in taste.
Why the figures vary
Three factors, and the first is the one nobody controls.
How much you spoon in. Instant is the only coffee with no fixed dose. A level teaspoon gives around 1.8 g, a heaped one closer to 3 g — a difference of 60 % in the cup. No packaging, no capsule, no filter basket standardises it.
Freeze-dried or spray-dried. Freeze-drying preserves more of the original content; spray-drying, which uses higher heat, degrades a little more. The difference is modest but real, and freeze-dried granules are generally the stronger of the two.
The bean behind it. Many instant coffees lean on robusta, which holds roughly twice the caffeine of arabica. A pure arabica instant sits at the bottom of the range, a robusta blend at the top.
By strength
| Size | Volume | Caffeine |
|---|---|---|
| Level teaspoon (1.8 g) | 240 ml | 60 mg |
| Heaped teaspoon (3 g) | 240 ml | 80 mg |
| Two teaspoons | 240 ml | 120 mg |
| Large mug, heaped | 350 ml | 95 mg |
| Decaf instant | 240 ml | 3 mg |
Values for a standard instant coffee. A robusta-heavy blend at two heaped teaspoons can pass 150 mg in a single mug.
The practical consequence: instant is the coffee where your own hand sets the dose. Two people making the same jar can be 60 % apart without either doing anything unusual.
Instant or filter: which has more?
Filter coffee, by about a third. Roughly 108 mg against 70 mg for the same 240 ml cup.
The gap comes from the dose, not the process. A filter brew uses 10 to 15 g of ground coffee for that cup; a heaped spoon of instant delivers the equivalent of far less. Instant is not a weaker coffee — it is a smaller one.
| Drink | Volume | Caffeine |
|---|---|---|
| Instant coffee | 240 ml | 70 mg |
| Filter coffee | 240 ml | 108 mg |
| Espresso | 30 ml | 77 mg |
| Black tea | 240 ml | 50 mg |
| Decaf | 240 ml | 5 mg |
Instant coffee carries a reputation for being weak. In caffeine terms that is only half right: a heaped spoon lands close to an espresso. What it lacks is the aromatic complexity of freshly ground coffee, not the stimulant.
And at bedtime, how much is left?
A 70 mg instant coffee at 4 pm leaves about 26 mg at an 11 pm bedtime. Two heaped spoons at the same hour leave 45 mg.
It is one of the gentler options for a late-afternoon cup, provided the spoon stays level.
The caffeine at bedtime calculator runs this for every drink of your day.
Frequently asked
Does instant coffee have less caffeine than filter?
Yes, about a third less: roughly 70 mg against 108 mg for the same 240 ml cup. The difference comes from the dose used, not from the drying process.
Does the spoon really change that much?
It is the single biggest factor. A level teaspoon holds around 1.8 g of granules, a heaped one close to 3 g. That is a 60 % swing in the same cup, with no other change.
Is freeze-dried stronger than spray-dried?
Slightly. Freeze-drying preserves more of the original caffeine content, while spray-drying uses higher heat and degrades a little more. The gap is modest compared with how much you spoon in.
Is decaf instant really caffeine-free?
No. It holds around 3 mg per cup, against 60 to 80 for regular instant. European rules cap residual caffeine at 0.3 % for instant coffee, higher than the 0.1 % allowed for roasted beans.
How many cups a day is reasonable?
EFSA considers 400 mg a day of no concern for a healthy adult, which is five to six standard instant coffees. For a single dose the mark is 200 mg — about three heaped spoons in one mug.
Other drinks
⚕️ Wellbeing information. The figures on this page are typical orders of magnitude, not individual measurements. They are not medical advice or a diagnosis. If you have questions about your intake, trouble sleeping, or any concern about pregnancy or medical treatment, speak to a healthcare professional.
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