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A cozy place to get comfortable with nursing math. Take one question at a time. We’ll cheer you on.
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Dosage practice calculator
Six topics, fresh dosage questions, and instant feedback. See every answer worked two ways, with a little encouragement along the way.
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Ten questions.
One proud moment.
Try a community practice set. Earn XP for correct answers and celebrate your progress with other learners.
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Earn 10 XP per correct answer on your first attempt in a community set. Each set has 10 questions; 9 correct earns a practice-set pass. Weekly rankings start Monday at 00:00 UTC. Ties share a rank. Only opted-in display names and avatars appear. Your email stays private. Full Pass includes up to 20 community sets per UTC day and unlimited dosage practice. Free accounts have 10 answered questions total, shared across both practice modes. Practice results describe these study sets.
One question at a time.
An untimed, ten-question practice set. Your first answer counts toward XP. Every answer is a chance to learn.
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Fresh nursing math questions, a little encouragement, and every answer worked two ways. Take your time. You’re building the method.
- ✓ Fresh numbers every question, so you can never memorize your way through.
- ✓ Pick your topics and drill the ones that scare you until they do not.
- ✓ Every answer worked step by step, two methods, your choice.
10 practice questions free · Full Pass $29 one time
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I’m Pip. Let’s figure this out, one question at a time.
Watching a video is not the same as solving the problem.
Most students learn dosage calculations the slow way. They rewatch a lecture, copy a formula onto a notecard, then freeze the moment a real order appears on the screen. Recognition is not recall. The exam does not ask you to recognize a formula. It asks you to read an order, pull the right numbers, set up the math, and calculate an answer correctly under time pressure.
Dose Drill flips that. You solve first. Each problem puts a realistic order in front of you, you type your answer, and you get told right away whether the calculation is correct, along with the full setup so you can see exactly where your thinking held or slipped. Because the numbers change every time, there is no answer to memorize. There is only the method, and the method is what you carry into the exam.
That is the entire approach. One problem, instant feedback, the worked solution in both methods, then the next one. It is boring in the best way, and boring reps are what turn a scary topic into an easy section.
Every type the test throws at you.
Toggle the topics you want in the practice card above, then drill. Use the rounding rule on each question and work through both explanations after answering.
Unit conversions
The metric table every other problem depends on: mcg, mg, g, and pounds to kilograms.
mcg · mg · g · kgTablets & capsules
Solid oral doses using desired over have, rounded the way the exam asks.
tabletsInjections & oral liquids
Reconstitution, injectable volumes, and liquid suspensions read off the label.
mL · units/mLIV pumps & drop rates
Pump rates in mL per hour and gravity drip rates in drops per minute.
mL/hr · gtt/minPediatrics & weight based
Convert pounds to kilograms and calculate the ordered amount by body weight.
mg/kgCritical care drips
Titrated infusions in mcg/kg/min converted to a pump rate.
mcg/kg/minMatched to how it shows up on NCLEX, HESI, and ATI.
Dosage calculation questions carry real weight on every nursing exam, and they are often the ones students lose sleep over because a single rounding slip changes the whole answer. Dose Drill is built around that reality.
Problems use the same phrasing and the same rounding rules you will see on the real thing. You practice reading an order the way it is actually written, catching the conversion hiding inside it, and rounding to the place the question asks for. Because every value is generated, you can run the same topic ten times and never see the same numbers twice.
If your dose has to be right, this is for you.
Dosage math is not only a nursing school hurdle. It follows a lot of careers, and the people who stay sharp at it are the ones who keep practicing. Dose Drill works for anyone practicing dose calculations and wants the answer to be automatic.
Try it free. Unlock everything when you are hooked.
Try 10 questions total with a free account. Full Pass unlocks unlimited practice for $29 one time. Compare the plans →
- ✓ 10 practice questions total per free account
- ✓ Pick and mix any of the six topics
- ✓ Full worked solution, both methods
- ✓ Free account, no card required
- ✓ Unlimited practice questions and community sets
- ✓ Progress tracking across every topic
- ✓ Weak-topic detection and retry-your-misses
- ✓ Lifetime access, no subscription
What students ask before they start.
Are dosage calculations hard?+
How many dosage calc questions are on the NCLEX?+
Should I use dimensional analysis or the formula method?+
What is the difference between mL/hr and gtt/min?+
Do I need to create an account to try it?+
ABG interpretation, worked out step by step.
Enter the three values and get a first-pass read; confirm compensation and mixed disorders against a clinical reference. Then load a random case to drill yourself.
Walk me through itSee the steps using your numbers
The method here is the one most programs teach. Read the pH first to find acidosis or alkalosis, then check which value, the respiratory one (CO2) or the metabolic one (HCO3), is driving it, then look at whether the other value has shifted to compensate. Dose Drill shows the expected-compensation calculations as well as the first-pass interpretation. Baylor teaching reference for the metabolic-alkalosis approximation.
This is a study aid. It does not replace clinical judgment, a full patient picture, or your facility's protocols.
Classic Parkland formula calculator.
Enter the patient's weight and the percent of body surface burned. Get the 24 hour fluid total and the two infusion rates, split the way the formula calls for, with the Rule of Nines on hand to add up the burn.
Walk me through itSee the steps using your numbers
Timing is measured from when the burn happened, not when the IV starts, so if time has already passed the first 8 hour window is shorter. Count only partial thickness and full thickness burns in the TBSA. The formula is a starting estimate; rates are then titrated to urine output.
This tool teaches the classic 4 mL formula. The 2024 American Burn Association guidance for adults with burns of at least 20% TBSA recommends a 2 mL starting estimate instead. Use the model specified in your study question. ABA guideline and scope.
GTPAL and due date, done right.
Two tools nursing students reach for constantly. Build a GTPAL from an obstetric history, and get an estimated due date and current gestational age from the last menstrual period using Naegele's rule.
GTPAL
Enter counts of pregnancies and children. Each pregnancy counts once, so a twin birth is one pregnancy with two living children.
Walk me through itSee the steps using your numbers
Due date (Naegele's rule)
First day of the last menstrual period plus 280 days (40 weeks), assuming a regular 28-day cycle.
Walk me through itSee the steps using your numbers
GTPAL counts pregnancies, not babies, so multiples are one entry under G, T or P but add to L for each living child. Naegele's rule assumes a regular 28 day cycle and is an estimate, not a guarantee of timing.
Reference assumptions: TPAL uses term at 37 weeks or later and preterm from 20 weeks to before 37 weeks; local conventions can differ. Obstetric history reference. Due date uses LMP + 280 days: ACOG explanation.
A little practice first. More when you’re ready.
Start with 10 questions total in a free account. Keep going with unlimited practice for one payment of $29. No recurring subscription.
- ✓10 practice questions total per account
- ✓Use them across dosage practice and community sets
- ✓Worked answers and instant feedback
- ✓All calculators free, even without an account
No card required. The 10-question allowance does not reset daily.
- ✓Unlimited dosage practice questions
- ✓Community practice sets and XP
- ✓Saved progress and topic accuracy
- ✓Interactive missed-question retries
- ✓Lifetime access, no subscription
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