How much caffeine is in Decaf Coffee (12oz)?
中文：低咖啡因咖啡（12 盎司）
Caffeine content
10 mg
Typical range: 5–15 mg
per 12 fl oz (355 ml)
About this drink
Decaffeinated coffee retains 5-15 mg caffeine per cup — about 5% of regular coffee. Multiple decaf cups across the day can accumulate to meaningful caffeine for sensitive people.
Ingredients: Decaffeinated brewed coffee
When will it clear your system?
10 mg is below the threshold most people notice. Three decaf cups daily ≈ 30 mg total — still well within safe afternoon territory.
Based on caffeine's 5-hour half-life, a Decaf Coffee (12oz) consumed at 2:00 PM drops below the sleep-safe threshold (~20 mg) by approximately 14:00 the same evening.
Where this fits in a daily limit
That's about 5% of the 200 mg pregnancy guideline and 3% of the 400 mg general adult daily limit — comfortably moderate.
See our pregnancy caffeine guide or half-life sleep math for the deep dive.
How it compares
| Drink | Caffeine |
|---|---|
Decaf Coffee (12oz) Generic | 10 mg |
| Starbucks Pike Place (Grande) Starbucks | 310 mg |
| Green Tea (8oz cup) Generic | 35 mg |
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How much caffeine is in a Decaf Coffee (12oz)?
A 12 fl oz (355 ml) Decaf Coffee (12oz) contains approximately 10 mg of caffeine. Actual values may range from 5 to 15 mg depending on preparation and source variation.
Is Decaf Coffee (12oz) safe during pregnancy?
The current ACOG and NHS guideline is under 200 mg of caffeine per day during pregnancy. A Decaf Coffee (12oz) fits comfortably within that limit. Always consult your obstetrician for personalized advice.
When should I stop drinking Decaf Coffee (12oz) for sleep?
Caffeine has a 5-hour half-life. To have under 20 mg circulating at bedtime (the typical sleep-safe threshold), stop drinking Decaf Coffee (12oz) about 0 hours before sleep. 10 mg is below the threshold most people notice. Three decaf cups daily ≈ 30 mg total — still well within safe afternoon territory.
Decaf Coffee (12oz) vs Starbucks Pike Place (Grande) — which has more caffeine?
Decaf Coffee (12oz) contains 10 mg per serving; Starbucks Pike Place (Grande) contains 310 mg per 16 fl oz (473 ml). Starbucks Pike Place (Grande) is the stronger of the two.
Does Decaf Coffee (12oz) keep you awake?
10 mg is mild caffeine. Most people can drink Decaf Coffee (12oz) in the afternoon without notable sleep impact.
Caffeine values shown are typical for the listed serving size. Actual content varies by preparation, brewing method, batch, and brand reformulation. Not medical advice — consult a healthcare provider for personalized guidance.