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Total Daily Insulin Dose Calculator

Work out total daily insulin dose instantly with clear inputs, formula shown and shareable results.

About Total Daily Insulin Dose Calculator

Multiplies body weight by a units-per-kilogram factor to estimate a starting total daily insulin requirement, then shows a 50:50 split.

Formula

Weight-based total dose

TDD (units/day) = weight (kg) x units per kg per day

Worked example

With the default values below, Total Daily Insulin Dose Calculator returns Total daily insulin dose of 35.0. Change any input above and every figure here is recalculated in your browser.

Inputs used

Body weightaccepts 2–250 kg
70 kg
Units per kilogram per dayaccepts 0.1–2
0.5

Results

Total daily insulin dose
35.0 units
Basal at a 50% split
17.5 units
Mealtime dose at three meals
5.8 units

Step by step

  1. 1Values used
  2. 2Weight-based total dose
  3. 3Total daily insulin dose= 35.0 units
  4. 4Basal at a 50% split= 17.5 units
  5. 5Mealtime dose at three meals= 5.8 units

Assumptions and limits

  • The result is derived only from the 2 inputs listed above. Anything not among them is not part of the calculation.
  • In particular, this calculator does not take inflation, tax, fees or charges or compounding frequency into account.
  • Figures are rounded for display to 1 decimal place, so totals built from several rounded parts can differ slightly from the unrounded arithmetic.
  • Educational estimate only. Not a substitute for professional clinical judgement, and must not be used to make treatment or dosing decisions.
  • This is an estimate for general information and not professional medical advice. See the full disclaimer for the limits that apply to this kind of calculator.

How these calculators are built and tested is described on the Methodology page. If a figure looks wrong, please report it.

Educational estimate only. Not a substitute for professional clinical judgement, and must not be used to make treatment or dosing decisions.

Frequently Asked Questions

What factor is typical?

0.4 to 0.6 units/kg/day is commonly quoted at diagnosis in type 1 diabetes, lower during partial remission.

Does insulin resistance change this?

Yes. Requirements above 1 unit/kg/day are common in marked insulin resistance.

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