Does bottled iced tea have caffeine?

Yes, but very little. The commonest brands run around 4 mg per 100 ml, so roughly 14 mg in a 330 ml bottle and 21 mg in a 500 ml one.

For scale: that’s less than two squares of dark chocolate, and about four to five times less concentrated than brewed tea.

Drink	Per 100 ml	Typical container
Bottled iced tea	~3–6 mg	~14 mg (330 ml)
Coca-Cola	~9.7 mg	~32 mg (330 ml)
Brewed black tea	~17–29 mg	~50 mg (240 ml)
Filter coffee	~40–50 mg	~100 mg (240 ml)

Figures checked in August 2026 across the best-selling products. Recipes vary by brand and country: the label is what counts.

Why so little, when it’s tea?

Because it isn’t tea in the sense you mean in a cup. A commercial iced tea is a tea-extract-based drink, heavily diluted and sweetened, formulated to be drunk cold and in quantity.

The starting infusion is far lighter than a cup’s: where you leave a bag three minutes in 200 ml of hot water, the bottled drink holds a fraction of that concentration. Sugar and flavourings occupy the rest of the volume.

The result is that at equal volume, a bottle of iced tea delivers less caffeine than a can of cola — surprising, since one has the word “tea” on it and the other doesn’t.

The exception that changes everything

One category leaves these figures entirely: “energy” iced teas, fortified with added caffeine.

Those are no longer tea drinks in the regulatory sense: they have received caffeine as an ingredient, and they can cross the 150 mg per litre threshold above which the statement “high caffeine content, not recommended for children or pregnant or breast-feeding women” becomes mandatory.

That’s the most reliable marker on a shelf: if the statement is there, you’re no longer in the category this article describes, and the exact figure per 100 ml sits right beside it. How that statement works is covered in what the high caffeine content label means.

The exemption that protects brewed tea covers tea as such, not a tea-based drink with caffeine added to it.

Where the figure counts anyway

Fourteen milligrams weighs nothing for an adult. The question changes shape in two situations.

Volume. Iced tea gets drunk as a thirst-quencher, often in large formats and sometimes several a day in summer. Three 500 ml bottles is around sixty milligrams — a coffee’s worth, arriving with nothing to signal it.

Children. ANSES estimates that 11% of 3- to 10-year-olds exceed the threshold for developing a tolerance to caffeine, and at that age it comes from soft drinks, chocolate and precisely these iced teas. It isn’t a question of concentration but of body weight: the same 14 mg doesn’t mean the same thing at 25 kg as at 70. The agency’s positions are covered in what ANSES says about caffeine.

Do sugar-free versions hold less?

No, and it’s exactly the same mechanic as with colas: removing the sugar doesn’t remove the caffeine.

A light or zero-sugar version swaps sugar for sweeteners and leaves the tea extract — so the caffeine — untouched. At equal volume you’re drinking the same thing in that respect.

One detail occasionally cuts the other way: some sugar-free versions are formulated with a slightly more concentrated extract to compensate for the lost body in the mouth. The difference stays marginal at these levels, but it doesn’t run in the direction people expect.

The only claim that guarantees no caffeine remains one that says so explicitly on the pack.

What about home-made iced tea?

It follows the rule for brewed tea, not for the bottle. Brew a bag and chill it, and you get a tea’s worth of caffeine — 40 to 70 mg for the equivalent of a large cup of black tea.

So a home-made iced tea easily holds three to four times the caffeine of the commercial version at the same volume. That’s the reverse of what intuition suggests, and it comes down entirely to dilution.

The cold plays no part: chilling an infusion doesn’t remove its caffeine.

What to take away

A bottled iced tea holds about 14 mg per 330 ml — a trace across an adult’s day, less than a can of cola.

Two caveats only: the “energy” versions, which belong to another category and are identifiable by the mandatory statement on the label; and large volumes, particularly with children, where it’s the tally rather than the bottle that matters.

To place all of it against everything else you drink, the full table is in caffeine content by drink.

CaffIQ counts these small amounts honestly rather than as zeros — which is what lets you see that a summer at three bottles a day isn’t quite neutral, without turning it into a problem.

CaffIQ provides general estimates, not medical advice. For any health question, talk to a qualified professional.