Coffee & Caffeine Dependence Calculator

Q: What is the recommended maximum daily caffeine limit?

The FDA considers 400 mg of caffeine per day safe for healthy adults.

Q: Does coffee cause dehydration?

Caffeine has a mild diuretic effect, but drinking an equal amount of plain water easily balances hydration.

Track your daily caffeine intake, estimate your tolerance level, analyze your hydration impact, and calculate annual coffee spending.

Primary Coffee / Beverage

Cups / Servings Per Day

Average Cost Per Cup ($)

Your Body Weight (lbs)

Beverage Type	Avg Serving Size	Caffeine Content
Drip / Filter Coffee	8 fl oz (240 ml)	~95 mg
Espresso (Single)	1 fl oz (30 ml)	~63 mg
Cold Brew	12 fl oz (350 ml)	~200 mg
FDA Safe Daily Limit (Adults)	N/A	400 mg / day max

Frequently Asked Questions

What is the recommended maximum daily caffeine limit?

According to the U.S. FDA, up to 400 mg of caffeine per day (about 4 typical cups of brewed coffee) is generally safe for healthy adults without dangerous side effects.

Does coffee cause dehydration?

Caffeine has a mild diuretic effect. While coffee contributes to fluid intake, drinking an extra 1:1 ratio of water helps offset mild fluid loss from higher caffeine doses.