Does it count?
Does tea count as water?
Quick answer
Yes, tea counts toward your daily water intake. Herbal, green, and black teas are about 99% water, and the small amount of caffeine in tea is gentle enough that it doesn't meaningfully dehydrate you. A few cups of tea a day are a perfectly good way to help hit your water goal.
The short answer
Counts
Tea is nearly all water and hydrates well.
Tea is simply water flavoured with leaves, herbs, flowers, or roots. The caffeine content of black and green tea is roughly half that of coffee per cup, and herbal teas (tisanes) contain no caffeine at all. Either way, the fluid in the cup wins out.
A 1 mug (240 ml) of this drink is roughly 99% water and contains about 40 mg of caffeine. So in fluid terms, it contributes meaningfully to your day — but the other ingredients matter too. The numbers below compare it to a few other common drinks.
| Serving | Water content | Caffeine |
|---|---|---|
| 1 mug (240 ml) | 99% | 40 mg |
| 1 cup (240 ml) (coffee) | 98% | 95 mg |
| 1 glass (240 ml) (milk) | 87% | — |
| 1 can (355 ml) (soda) | 90% | 35 mg |
The bottom line
Tea of any kind is a fine way to reach your water goal — especially herbal varieties in the evening.
Whatever drinks you choose, the goal is the same: hit your total daily fluid target, mostly from water. Use the calculator to find that number for your body.
Find your daily water goal
Now you know what counts — see how much you actually need based on your weight, activity, and climate.
Frequently asked
Does herbal tea count as water?
Yes. Herbal teas like chamomile, peppermint, and rooibos are caffeine-free and essentially flavoured water, so they count fully toward your daily water intake.
Does green tea dehydrate you?
No. Green tea contains much less caffeine than coffee (around 25–50 mg per cup), and the fluid in the cup more than makes up for any mild diuretic effect. It counts toward your water.
Is iced tea as hydrating as hot tea?
Plain iced tea is just as hydrating. The catch is that many bottled iced teas are loaded with added sugar, which adds empty calories without changing how well they hydrate you.
Sources
- 1.Killer, Blannin & Jeukendrup, PLOS ONE 2014 — Moderate coffee intake (about 4 cups/day) hydrates similarly to water in habitual drinkers.
- 2.U.S. National Academies (IOM/NAM), 2005 — Adequate total water intake of about 3.7 L/day for men and 2.7 L/day for women, including water from food and all beverages.