Dosage Calculation Coach
Pick what to practice, and walk through it one small question at a time.
Problem type
Difficulty
Teach it as
You can switch while the tutor walks you through it.
Teach it as
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?
Want to see it step by step?
One small question at a time.
The dose
Appears once you find it.
How the coach works
DemoTap through to see how it works
The provider orders 2 mg. Each tablet has 1 mg. How many tablets will you give?
Step 1 of 5 · Read it
First, read it. How much did the provider order?
The details, in words
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, in the method you pick: 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 and per-kg orders split into doses), reconstituting a powder from its label, IV rates (pump mL/hr, gravity gtt/min, how long a bag runs, weight-based boluses, pediatric maintenance fluid, and an IV running behind schedule), weight-based safe dose ranges, titrated drips (mg/hr, mg/min, units/hr, mcg/kg/min), heparin (rates, boluses, and the weight-based protocol), and insulin (a correction scale, carb counting with a correction factor, and an insulin drip). Next serves the next problem from the type you pick, without repeats until the set runs out.
- Every type comes at three levels, set by how many steps the walk-through takes: Easy (2–3 steps, one calculation), Medium (4–5: a conversion or a weight first), and Hard (6 or more: pounds to kg, a per-day order split into doses, a protocol row, a policy check).
- 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.
- Each method is taught its own way. Formula: which numbers are D, H and Q, then D ÷ H × Q. Ratio and proportion: which proportion is set up with the units lined up, then cross-multiply and divide. Dimensional analysis: which fraction starts the chain, which conversion factor cancels the unit on the bottom, then multiply across, with each cancelled unit struck out. Switching methods mid-walk starts the walk-through over in the new one; 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 vs Formula: Which Dosage Method Is Best?One dosage problem worked in all three methods, what the nursing studies and reviews actually found, and why using one method the same way every time matters more than which one.
- Also uses this toolHow the NurseSavvy Math Coach Teaches (and the Research Behind It)Every teaching decision in the Dosage Calc Coach and TEAS Math Coach, the math-education and nursing research behind it, and how strong that evidence is, including what is only a design choice.
- Also uses this toolHow to Estimate Dosage Calculation Answers Before You CalculateThree quick gut checks that catch decimal and zero slips before they reach the answer box, worked for oral doses, IV pumps, drips, mg/kg and heparin, plus what the research does and doesn’t show.
- Also uses this toolMental Math for Nurses: Fast Checks You Can Do in Your HeadFriendly percents, halves and doubles, friendly weights, divide-by-60 drip checks and the 1,000s between g, mg and mcg: mental checks that catch slips, never a replacement for the calculation.
- Also uses this toolDosage Calculation Rounding Rules for Nursing StudentsWhen to round to whole, half, tenths or hundredths: capsules, tablets, mL, pump rates, drops and units, with worked examples, the round-once rule and how to write a dose safely.
- Also uses this toolWorked Examples vs Practice Problems: Why Examples That Fade Work BetterWhy beginners learn more from worked-out solutions than from cold practice, why the help has to fade as you improve, and how to study dosage and TEAS math that way.
- 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.
- Also uses this toolDosage Calculation Practice Questions With AnswersWork nearly 90 numeric-entry dosage problems with a step-by-step tutor: doses, conversions, IV and drip rates, pediatric safe ranges, reconstitution, heparin, and insulin.
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?
- Not to start. Your first 10 problems are free without signing in, and so is your first walk-through with Tala. After that, make a free account right in the chat (about ten seconds) and the coach stays free, with no limit on problems or walk-throughs.
- 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
- 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.
- GuideThe Socratic Method for Nursing Students: Learn by Being AskedWhat the Socratic method is, why being asked beats being told, and a real conversation where an AI tutor walks a nursing student from a wrong answer to the right one, one question at a time.
- 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.
- SubjectDosage CalculationDosage calculations, IV drip rates, weight-based dosing, and unit conversions.