Caffeine Calculator
Rough caffeine milligrams from a simple coffee cup model.
Use the calculator below, then review the formula, a numeric example, and the reference table to understand how the caffeine intake estimator result is produced.
Educational tool only. It does not replace advice from a licensed clinician, dietitian, or exercise physiologist.
Calculator inputs
Result
–
What is this calculator?
Rough caffeine milligrams from a simple coffee cup model. The formula, a worked example, and a reference table are below. Results are for education only, not medical advice.
How it works
Illustrative model: mg caffeine ≈ coffee cups × ~95 mg per cup (brew strength varies widely).
Example
2 cups ~190 mg approximate (could be 120–250 mg in real cafes).
Reference Table
| Value | Meaning |
|---|---|
| Espresso shot | Often ~60–75 mg each |
| Energy drink | Check label; can be high |
| Tea | Usually lower than coffee per cup |
FAQ
Pregnancy limit?
Follow obstetric guidance; limits are conservative.
Anxiety or insomnia?
Reduce dose and timing; discuss with clinician.
Medications?
Some drugs interact with caffeine metabolism.
Tolerance?
Habituation changes perceived effect, not always metabolism.