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GlucoseCurve

GlucoseCurve does not collect user data or use cookies.
Anonymous hosting data is collected by the web provider, GlucoseCurve does not handle this directly.
Processing happens only in your browser — nothing is stored or uploaded.
Free, visual, educational curves for meals and rapid-acting insulin. Not medical advice. Not for real-world dosing decisions.

What this simulator is (and isn’t)

GlucoseCurve uses a simplified math model to draw example blood glucose curves after a meal, with and without rapid-acting insulin. It is designed for learning, not for real-world medical decisions.

  • It does not know your real insulin needs.
  • It does not replace diabetes education or a care team.
  • It does not tell you what dose to take.

Always follow the plan from your healthcare team, and contact them for medical questions or changes to your treatment.

Key ideas

These definitions are simplified and for education only.

  • Insulin-to-carb ratio (I:C) – how many grams of carbs are covered by 1 unit of rapid-acting insulin (for example, 1:10 means 1 unit for every 10 grams of carbs).
  • Insulin sensitivity factor (ISF) – about how much 1 unit of rapid-acting insulin lowers your blood glucose (for example, 1 unit lowers ~50 mg/dL).
  • Correction dose – an extra amount of insulin used to bring a higher blood glucose closer to a target.

Work out sample ratios (education only)

This section is for understanding the math behind I:C and ISF. It is not a dosing calculator. Use example situations you have already discussed with your care team. Do not use this page to create your own new insulin plan.

Sample insulin-to-carb ratio (I:C)

Imagine a situation where your team had you take a certain number of units for a known amount of carbs. You can plug that in here to see the ratio.

g carbs
units

I:C: –

Sample insulin sensitivity (ISF)

Now imagine a correction situation you've already talked about with your team: a certain drop in blood glucose after taking a correction dose. You can plug in those example numbers here.

mg/dL
units

ISF: –

Optional: see this in the simulator

If you want to see how these sample ratios change the curves, you can send them to the simulator. This just moves numbers between pages on your device — nothing is stored or saved to an account.

mg/dL

This is only used to set a sample shaded range on the graph, not to recommend a target for you.

mg/dL
g carbs

Once the simulator opens, you can still adjust or clear everything. Nothing on this site should replace personalized medical advice.

Safety note: GlucoseCurve is an education tool only. It uses a simplified model and does not reflect your personal insulin needs or real-world blood glucose. Do not use this site to choose real insulin doses, change your treatment, or manage emergencies. Always follow the plan from your healthcare team.