Converting a chosen dextrose bolus or bag target into stock-solution and dilution arithmetic.
Clinical Tools / Live calculator
Dextrose dose & dilution calculator
Estimate dextrose bolus math or fluid-bag dextrose concentration math using visible percent-solution arithmetic. This tool is arithmetic support only and does not recommend a dextrose protocol or treatment plan.
Percent-solution conversions, stock volume to draw up or add, final bag math, and optional delivery-per-hour output.
Whether dextrose is indicated, what route to use, or what final concentration is clinically appropriate.
Input
Enter the dextrose arithmetic
Choose a bolus or bag-concentration mode, then enter the stock solution and the target math you want shown.
Formula
Formula audit trail
Use these steps to verify how the displayed result was calculated.
Percent solution math: % dextrose = grams per 100 mL.
Bolus mode: total dextrose dose = body weight x desired g/kg dose.
Stock volume: grams needed / (stock % / 100).
Bag mode: stock to add = bag volume x target % / stock %.
Rounding is for display only. This tool shows planning arithmetic only and does not decide protocol, route, or reassessment.
Calculation steps will appear here for verification.
Safety checks
Review before use
- Arithmetic support only.
- This tool does not recommend whether dextrose support is indicated.
- Review final concentration, route, and delivery context carefully before using a hypertonic dextrose result.
Learn
Worked example and practice
Compact learning support for students, using the same arithmetic the live calculator performs.
Worked example
A 10 kg dog needs a 0.25 g/kg dextrose bolus from a 50% stock solution.
Total dose = 10 kg x 0.25 g/kg = 2.5 g
Stock volume = 2.5 / (50 / 100) = 5 mL
The arithmetic answer is 5 mL of 50% dextrose before any separate decision about dilution, route, or line selection.
Try this case
Estimate the answer before revealing it: how much 50% dextrose stock is needed to make a 1 L bag into 2.5% dextrose?
Reveal worked answer
Stock to add = 1000 x 2.5 / 50 = 50 mL.
Total dextrose in the bag = 1000 x 2.5 / 100 = 25 g.
If you want the final bag concentration to stay exact, remove 50 mL of base fluid before adding the stock.
Basis
Basis and limits
- Calculation basis: bolus mode converts g/kg into total grams and stock volume; bag mode converts a target final percent into stock volume to add and optional grams per hour.
- Scope: this tool supports dextrose arithmetic. It does not choose route, dilution strategy, indication, or a treatment protocol.
- Before use: verify the stock concentration, final delivery setup, line choice, and current case plan against protocol and product labeling.
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