Glucose Ketone Index Calculator

Ever wondered how deep you are in ketosis? That’s where the Glucose Ketone Index (GKI) comes in. It’s a quick way to check your metabolic state by comparing your blood glucose to your ketone levels.

The lower your GKI, the stronger your body is running on fat instead of sugar. This matters for people on ketogenic diets, fasting plans, or even cancer therapies (where metabolic control is key).

How to Calculate Your GKI

The formula is super simple:

GKI = (Blood Glucose (mg/dL) ÷ 18) × Blood Ketones (mmol/L)

For example:

• Your blood glucose is 90 mg/dL
• Your ketones are 1.5 mmol/L

GKI = (90 ÷ 18) × 1.5

= 5 × 1.5

= 3.33

So, your GKI is 3.33, meaning you're in moderate ketosis.

What Does Your GKI Mean?

How to Lower Your GKI (and Stay in Ketosis)

Want to get into deeper ketosis? Here’s what you can do:

• Cut carbs – Less sugar means lower glucose.
• Fast longer – Your body burns stored fat faster.
• Exercise – Workouts help burn glucose quickly.
• Eat more healthy fats – Avocados, nuts, and olive oil are great choices.

The goal? Keep your GKI below 6 for fat loss and below 3 for deeper ketosis.

Why Does GKI Matter?

Doctors and researchers use GKI to track metabolic health. It's especially useful for:

• Weight loss & fat burning
• Diabetes control
• Cancer therapy (as studied by Dr. Seyfried)
• Fasting & autophagy

If you’re serious about ketosis, checking your GKI is a smart move.

FAQs

What’s a good glucose level for ketosis?

Aim for under 100 mg/dL (ideally 70-90 mg/dL).

What’s a normal ketone level?

0.5-3.0 mmol/L is typical for ketosis.

Do I need a special app to track GKI?

Nope! Just a blood glucose meter and a ketone meter. Or, use our Glucose Ketone Index Calculator for instant results.

Final Thoughts

Your Glucose Ketone Index is more than just a number it’s a window into how your body fuels itself. Whether you’re fasting, losing weight, or managing a condition, tracking GKI can help you stay on top of your health.