GC

GlucoseCurve

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Free, visual, educational curves for meals and rapid-acting insulin. Not medical advice. Not for real-world dosing decisions.
GlucoseCurve does not collect user data or use cookies.
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Carb possibilities with two meals

First, describe an example meal for each carb type (fast, moderate, slow). Then you can see a “what if I eat again now?” curve using the same patterns. Educational only — not for dosing decisions.

Example meal for each carb type (first meal)

For each carb type, use one real meal where that carb type dominated and insulin changes around the meal were small. The graph will try to follow those patterns.

Carb type Grams of carbs Starting BG Peak BG Minutes to peak
Fast
Moderate
Slow

Enter starting BG, peak BG, and time to peak (plus grams) for at least one carb type, then update the graph.

Optional extra BG points from the first meal

If you have more CGM readings from the same meal, add them as “minutes after eating” and BG. The graph will connect these points to follow your data more closely.

What if I eat again now?

Once you’ve filled in at least one row above, use this to see a second curve for “eating again now” based on the same carb behavior.

g carbs
mg/dL

If you enter this, the summary will estimate a peak BG (current BG + modeled rise from this new meal).

min after first meal

The pink “eat again now” curve will follow the first-meal curve up to this time, then branch off using the new meal you entered above.

Show curves on the graph:

Two-meal carb curves (educational)

Simulated BG change for the example meal (first meal) plus an optional “eat again now” meal using the same carb behavior. Educational only — not for dosing decisions.

Fast
Moderate
Slow
Eat again now
Safety note: This page is for education only. It uses a simplified model based on the numbers you enter, and does not reflect your personal insulin needs or full digestion process. Do not use it to choose insulin doses or treat lows/highs. Always follow the plan from your healthcare team.