A typical 8 oz (240 ml) cup of coffee has about 95–100 mg of caffeine, but it can vary widely by brew and beans.

Quick Scoop

  • Standard brewed coffee (8 oz): about 95–100 mg caffeine on average.
  • Common range for brewed coffee: roughly 80–165 mg per cup depending on how strong it’s made.
  • Espresso (1 oz shot): about 60–65 mg caffeine.
  • Instant coffee (8 oz): about 60–80 mg.
  • Cold brew (about 12–16 oz cup): often 150–230 mg because it’s more concentrated and served in bigger sizes.
  • Decaf coffee (8 oz): still has about 2–5 mg of caffeine.

Simple HTML table (as requested)

html

<table>
  <thead>
    <tr>
      <th>Coffee type</th>
      <th>Typical serving</th>
      <th>Approx. caffeine</th>
    </tr>
  </thead>
  <tbody>
    <tr>
      <td>Brewed coffee</td>
      <td>8 oz (240 ml)</td>
      <td>≈ 95–100 mg</td>
    </tr>
    <tr>
      <td>Strong brewed coffee</td>
      <td>8 oz (240 ml)</td>
      <td>≈ 135–165 mg</td>
    </tr>
    <tr>
      <td>Espresso</td>
      <td>1 oz (single shot)</td>
      <td>≈ 60–65 mg</td>
    </tr>
    <tr>
      <td>Latte / Cappuccino</td>
      <td>8–12 oz</td>
      <td>≈ 60–130 mg (espresso-based)</td>
    </tr>
    <tr>
      <td>Instant coffee</td>
      <td>8 oz (240 ml)</td>
      <td>≈ 60–80 mg</td>
    </tr>
    <tr>
      <td>Cold brew</td>
      <td>12–16 oz</td>
      <td>≈ 150–230 mg</td>
    </tr>
    <tr>
      <td>Decaf coffee</td>
      <td>8 oz (240 ml)</td>
      <td>≈ 2–5 mg</td>
    </tr>
  </tbody>
</table>

Why it varies

  • Bean type (Robusta usually has more caffeine than Arabica).
  • Roast level (light roasts tend to retain slightly more caffeine per bean than dark roasts).
  • Brew method (espresso, drip, French press, cold brew all extract caffeine differently).
  • Serving size (a “cup” in the real world is often 12–16 oz, not 8 oz, so you may get well over 150 mg in one mug).

Quick safety note

Most healthy adults are generally advised to stay at or below about 400 mg of caffeine per day, which is roughly 3–4 small cups of brewed coffee depending on strength.

Information gathered from public forums or data available on the internet and portrayed here.