💊 Dosage Calculation Test & Practice

Test and Practice modes

Practice shows whether your answer is correct and gives a worked solution before you continue. Test records each answer without revealing correctness until the results.

Difficulty

Easy uses simpler one-step calculation structures. Medium adds dose-to-volume, divided-dose, minute-based IV, and percent-strength work. Hard adds advanced concentration, multi-step, and weight-based infusion problems. Mixed balances the available levels while only assigning each problem type to an appropriate difficulty.

Calculation areas

• Tablets & Capsules: calculate how many scored dosage units to give from an ordered dose and tablet strength.
• Oral & Injectable Liquids: calculate mL from oral-liquid and injectable concentrations.
• Unit Conversions: g, mg, mcg, L, mL, lb/kg, and common household-to-mL conversions.
• Weight-Based Dosing: single doses, dose-to-volume problems, and divided daily doses.
• Safe Dose Ranges: calculate stated minimum or maximum safe doses from a supplied mg/kg range.
• IV Pump Rates: calculate mL/hr from a volume and a time stated in hours or minutes.
• Infusion Time: calculate how long an infusion will run from volume and pump rate.
• Gravity Drip Rates: calculate gtt/min from volume, time, and tubing drop factor.
• Reconstitution: calculate how many mL to withdraw after a powdered medication has been reconstituted.
• Units & Concentration: convert a units/hr order into mL/hr from an infusion concentration.
• Percent Strength: calculate grams of solute from a stated % w/v solution.
• Multi-Step Dosing: combine lb-to-kg conversion, mg/kg dosing, and a final mL calculation.
• Weight-Based Infusions: calculate mL/hr from mcg/kg/min, patient weight, and IV concentration. Hard questions may require lb-to-kg conversion first.

Core formulas

Desired ÷ Have × Quantity = Amount to give

Weight-based dose = dose per kg × weight in kg

IV rate = volume in mL ÷ time in hours

gtt/min = volume × drop factor ÷ time in minutes

Infusion time = total volume ÷ mL/hr

% w/v = grams per 100 mL

Conversions used in this app

1 g = 1,000 mg · 1 mg = 1,000 mcg · 1 L = 1,000 mL · 1 kg = 2.2 lb · 1 teaspoon = 5 mL · 1 tablespoon = 15 mL · 1 fluid ounce = 30 mL · 1 cup = 240 mL.

Answer options and assistance

Typed answers are the default. You can switch to multiple choice, show the relevant formula with each problem, or add a per-question time limit in Advanced Settings. In multiple-choice mode, number keys 1–4 select an option.

Calculator: A calculator may be used, especially for timed Hard or Mixed sessions.

Entering and rounding answers

For typed answers, enter the number only; the unit is shown beside the field. Each problem states whether to give an exact value or round to the stated number of decimal places.