Dosage Calculation Coach
Problem 1 · Oral & injection · Easy
The provider orders amoxicillin 500 mg PO every 8 hours. Amoxicillin is available as 250 mg capsules. How many capsules will you give?
How the coach works
Dosage calculation word problems go wrong in small places: the wrong number pulled from the order, a unit nobody converted, a setup flipped upside down. Work the problem, type your answer, and check it.
Do the math in the scratch pad beside the problem; it keeps every line and guesses what you are working out. Or press "Walk me through it" and Tala, the dosage-calc nurse, asks one small question at a time — "What dose will you give?", "How many capsules make up 500 mg?" — and writes out the work in formula, ratio and proportion, or dimensional analysis.
- Problems are written ahead of time, not generated: oral and injection doses (with g, mg, and mcg conversions), reconstituting a powder from its label, IV rates (pump mL/hr, gravity gtt/min, and how long a bag runs), weight-based safe dose ranges, titrated drips in mcg/kg/min and mcg/min, the heparin protocol, and an insulin correction scale. Next serves the next problem from the categories you have switched on, without repeats until the set runs out.
- The answer box comes first. Check as many times as you like. When a problem has two parts, like a heparin bolus and then a pump rate, the second box opens once the first is right.
- "Walk me through it" breaks the problem into short questions from your tutor. Numbers are typed; questions without a number answer, like which protocol row applies or whether a dose is safe, are multiple choice. A wrong number gets one more try with a hint before the tutor shows the answer and how to get it.
- Pick your tutor from the NurseSavvy nurses; Tala, the dosage-calc nurse, is the default. Every tutor asks the same questions in their own voice, and your pick stays your default. The walk-through is scripted, not an AI chat.
- The scratch pad is a calculator that keeps every line. It reads each line against the problem — type 2 × 250 on a 250-mg capsule problem and it reads "2 capsules × 250 mg/capsule = 500 mg, the ordered dose" — and you can edit its guess. When a line lands on the answer, it fills the answer box for you to check; "→ answer" puts any line there.
- After each right answer the tutor writes out the work. Switch between formula, ratio and proportion, and dimensional analysis to rewrite it in that method; dimensional analysis strikes out each unit as it cancels. Every method lands on the same answer.
- Typed answers count when they round to the keyed value at the place the question asks for: tablets to the tenth, mL/hr to the tenth, units to the whole unit. The conversions table is one tap away.
- Weight-based problems draw the safe range on a chart as you work out its low end, high end, and the ordered daily dose. Heparin and insulin problems use a sample protocol table (a weight-based heparin nomogram, a correction insulin scale) and mark the row that applies; on the unit, the facility protocol and the provider order rule.
Why it works
- The full guideDimensional Analysis vs. Ratio and Proportion for NursesSee the same nursing dosage problem solved both ways, learn when each method feels simplest, and understand why consistent setup matters more than switching methods.
- Also uses this toolHow to Pass the Dosage Calculation Exam in Nursing SchoolMaster the six dosage problem types with one calculation method, step-level error correction, the unit conversions that cost points, and a practical two-week plan.
- Also uses this toolReconstitution and Dilution Problems for Nursing StudentsTurn a powder vial into a usable concentration, distinguish reconstitution from dilution, and avoid the final-volume mistake students often skip in practice.
- Also uses this toolPediatric Dosage Calculations: mg/kg Made ClearUse a fixed sequence for pounds-to-kilograms conversion, mg/kg dosing, per-day versus per-dose wording, and safe-dose-range verification.
Questions people ask
- Which dosage calculation method should I use?
- The one your program teaches and grades. All three give the same answer when set up correctly. Dimensional analysis handles multi-step conversions in one line; formula and ratio and proportion are quicker for a single dose from a single strength. The coach lets you run the same problem in each.
- Do I need an account?
- No. The coach is free to use without signing in. After a few problems, signed-out visitors see an optional prompt to create a free account and save progress.
- Can I use a calculator?
- Yes. The scratch pad beside the problem is a calculator that keeps every line of your work, and any line can go straight into the answer box. The NCLEX also provides an on-screen calculator.
- Can I skip the steps?
- Yes. The answer box is always there; the steps only open when you press "Walk me through it". If you get the answer right without them, the full worked steps are still there to look at.
Keep going
- Guide20 Dosage Calculation Practice Questions With AnswersSolve 20 interactive numeric-entry dosage problems covering basic doses, conversions, IV rates, pediatric safe ranges, continuous infusions, and reconstitution.
- QuizDosage Calculation Practice QuestionsTwenty dosage calculation questions you answer with a number on a keypad, each followed by the worked solution. A free account unlocks the full set.
- GuideIV Drip Rate and Infusion Calculations ExplainedCalculate mL/hr, gtt/min, mcg/kg/min, and heparin units/kg/hr drips with units that expose conversion errors before they reach the answer box.
- SimulatorHeparin Drip Calculation PracticeWork heparin drip problems step by step: weight-based bolus, starting rate, and aPTT adjustments read off a nomogram, in the method you use.
- TopicContinuous Infusion CalculationsContinuous IV drips run high-alert drugs — heparin, insulin, and vasopressors — at a calculated, titrated rate. Converting the order into a pump rate and re-titrating to the trend…
- TopicDesired-Over-Have FormulaOne formula covers most of the doses a nurse ever calculates: what you want, over what you've got, times the amount it comes in.