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.
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Carb type calibration

Use your own data to estimate how fast, moderate, and slow carbs affect your glucose. For each carb type, enter one example meal: starting BG, peak BG, and how many minutes it took to reach that peak. You can optionally add extra BG points at other times.

Example meal for each carb type

Ideally use meals where that carb type dominated and where insulin changes were small around the meal (to keep this mostly about the carbs).

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

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

Show curves on the graph:

Carb-type curves (educational)

Simulated BG over 3 hours for your example fast, moderate, and slow carbs. Curves start at your entered BG and follow the points you provide as closely as possible. Educational only — not for dosing decisions.

Total (all carbs)
Fast
Moderate
Slow
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.