Matcha latte vs Chai latte: caffeine compared
Chai latte (16 oz) has 95 mg of caffeine, 30 mg more than Matcha latte (16 oz, 65 mg) — 1.5× as much per serving. Per fluid ounce, Chai latte is the stronger drink: 5.9 mg/oz versus 4.1 mg/oz.
| Matcha latte | Chai latte | |
|---|---|---|
| Serving | 16 oz | 16 oz |
| Caffeine per serving | 65 mg | 95 mg |
| Per fl oz | 4.1 mg | 5.9 mg |
| Share of 400 mg/day | 16% | 24% |
| Servings to reach 400 mg | 6.2 | 4.2 |
| Hours until under 50 mg | 1.9 h | 4.6 h |
| Last one for an 11 PM bedtime · standard (50 mg) | 9:06 PM | 6:22 PM |
| Last one for an 11 PM bedtime · sensitive (25 mg) | 4:06 PM | 1:22 PM |
| Share of the 200 mg pregnancy limit | 32% | 48% |
One serving of each, over 16 hours
Common questions
Which has more caffeine, Matcha latte or Chai latte?
Chai latte (16 oz) has about 95 mg versus 65 mg in Matcha latte (16 oz): 30 mg more, or 1.5× as much.
Which is stronger per ounce, Matcha latte or Chai latte?
Chai latte: about 5.9 mg per fl oz versus 4.1 mg for Matcha latte. Serving size decides the total you actually drink.
How many Matcha latte servings equal one Chai latte?
About 1.5 servings of Matcha latte (16 oz) match the caffeine in one Chai latte (16 oz).
When should I stop drinking Matcha latte or Chai latte before bed?
For an 11 PM bedtime with a 50 mg limit and a 5-hour half-life: last Matcha latte by 9:06 PM, last Chai latte by 6:22 PM. Half-life varies from about 1.5 to 9.5 hours between people.
Method
Caffeine per labeled serving, from the same drink table every calculator here uses (FDA/USDA reference amounts and manufacturer labels; see caffeine content of every drink). Brewed drinks vary batch to batch, so read these as typical values. Decay uses a 5-hour average half-life with a 45-minute absorption ramp; cutoff = bedtime − 5 h × log₂(dose ÷ limit). Percentages use the FDA's 400 mg/day figure for healthy adults and the 200 mg/day limit ACOG gives for pregnancy.
Source — Matcha latte: CSPI caffeine chart (Starbucks Matcha Latte, 16 oz grande), checked 2026-10-13.
Source — Chai latte: CSPI caffeine chart (Starbucks Chai Latte, 16 oz grande), checked 2026-10-13.