Liquid Dosage Calculator – How Long Will My Medicine Last?
Enter your bottle size, dose amount, and daily use to see how long your medicine will last.
Estimate How Long Your Bottle Will Last
A simple daily-use calculator for liquid medicine, eye drops, cough syrup, and other bottle-based doses.
Use This Tool for Everyday Liquid Medicines
This calculator works well for syrups, eye drops, oral suspensions, and other bottles where you want a simple day estimate.
Enter bottle size
Add the full amount in the bottle, such as 10 mL, 1 fl oz, or 1 cup.
Enter each dose
Type how much you use each time, like 1 mL, 2 drops, or 1 tsp.
Add times per day
Tell the calculator how often you use it each day so it can estimate daily usage.
See days remaining
You will instantly see how many days the bottle should last and the expected finish date.
Common Questions About Liquid Medicine Usage
Short answers to the questions people usually ask before calculating bottle duration.
Enter the bottle amount, your drops per use, and how many times you use them per day. The calculator estimates how many days the bottle should last based on total daily use.
It depends on the bottle size and how much you take each day. This tool multiplies your dose by your daily frequency and then divides the bottle size by that amount.
Yes. Choose drops as the unit for your bottle size or your dose, then enter how many times per day you use it. The calculator will convert everything into a daily estimate.
If you miss doses often, the bottle may last longer than the estimate shown here. The result assumes you take the medicine exactly as entered every day.