Urine color tells you more than a water formula

Don’t forget to drink water. Seriously.

This afternoon I got a shock when I went to pee: it was orange. The first time in my life. I googled it right away, and it turns out that’s already mild dehydration, not just ordinary under-drinking. My body was already sounding the alarm.

Then I realized the last 2 days had been really busy, so busy I forgot to drink.

Here’s what I learned so it doesn’t happen again.

The formula doesn’t fit everyone

The formula you see most often is body weight × 30 ml.

60 kg → 1.8 liters. 70 kg → 2.1 liters. Easy to remember.

But when I dug deeper, I found this formula doesn’t fit people whose weight is above ideal. Why? Because fat tissue is only 10–20% water, while muscle is 75% water. So if your weight goes up because of fat, your water needs don’t go up as much as the formula says.

Doctors in hospitals use “adjusted body weight” for overweight patients, not their actual weight.

Check the color instead

That’s why the most honest indicator isn’t a formula. It’s the color of your urine.

• Clear or pale yellow = ideal
• Dark yellow = starting to run low
• Orange = mild dehydration (like me today)
• Brown = severe dehydration
• Red = go to a doctor right away

The trick I use now: four 600 ml bottles on my desk. Finish them all = 2.4 liters. Daily target done.

I also saved a urine color chart on my phone for quick reference. If you don’t have time to think about how many liters you’ve had today, just look when you pee. It’s worth saving one too, just in case.

By the time you’re thirsty, you’re already late. Better to drink before your body has to sound the alarm.