Vial & Concentration
Convert entered vial quantities and liquid volumes into a concentration, then calculate a volume from a user-entered amount.
Try calculator →TOOLS FOR EVERYDAY TRACKINGA little less math.
A little less math.
A lot more clarity.
Explore VYALS calculators for vial conversions, nutrition, hydration, walking, and body metrics. Clear inputs and readable results help you understand the numbers you choose to track.
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VIAL MATH · SAMPLE
Vial amount10 mg
Liquid volume2 mL
Concentration5 mg/mL
Volume for 0.5 mg
mathematical example0.10 mL
mathematical example0.10 mL
YOUR TRACKING TOOLS
HydrationWater goals
WalkingDistance & pace
Body metricsBMI & body fat
Illustrative interface · Not a recommended dose
EXPLORE YOUR TOOLSDifferent goals.
Different goals.
One organized place.
Choose the calculation that matches what you're tracking. Each tool is designed to make inputs, units, and results easier to follow.
Body Mass Index
Calculate BMI using height and weight, and view it as one general measure rather than a body-fat percentage.
Try calculator →Body Fat Estimate
Explore a separate body-fat estimation tool with its own inputs and limitations, distinct from BMI.
Try calculator →Protein
Explore protein target calculations with adjustable personal inputs and room to track your logged intake.
Try calculator →Hydration
Work with your chosen water goals and track your daily recorded intake in familiar units.
Try calculator →Walking
Estimate walking time, distance, pace, and related activity metrics using the information you enter.
Try calculator →INTERACTIVE CALCULATORS
Try the tools right here.
Enter your information and see results instantly. Calculations run in your browser; these tools do not submit your entries to VYALS.
Vial & Concentration
Enter an amount and liquid volume to calculate concentration. You can also convert an independently specified amount to milliliters and U-100 scale markings. These are unit conversions, not recommended doses.
Select Calculate to see the conversion.
U-100 markings mean 100 units per 1 mL. Verify actual syringe calibration, product information, and any medication instructions with a qualified professional.
Body Mass Index (BMI)
BMI is a height-to-weight ratio, not a measurement of body fat. This calculator uses metric units.
Select Calculate to see your BMI.
BMI is a screening metric and has limitations, especially when used to infer body composition.
Body Fat Estimate
The U.S. Navy circumference method estimates body fat using measurements. It is entirely separate from the BMI calculation, and estimates may differ from measured body composition.
Select Estimate to see the result.
These formulas use sex-specific population equations and are not accurate for everyone. Measure consistently and interpret estimates cautiously.
Protein Target Worksheet
Explore how a multiplier you choose changes a daily protein figure. The preset is an arithmetic example, not a personalized recommendation.
Select Calculate to see the example total.
Protein needs vary with age, activity, health status, and individual circumstances.
Hydration Goal Worksheet
Use an independently chosen mL/kg multiplier to create a tracking estimate. This tool does not calculate medical fluid requirements.
Select Calculate to see the example goal.
Fluid needs vary with diet, weather, activity, medications, and health conditions. Some people need fluid restrictions.
Walking Distance & Pace
Estimate distance from steps and your entered stride length, or see approximate walking pace from elapsed time. Stride length must be measured or estimated separately.
Select Calculate to see the distance and pace.
Results are estimates. This tool does not infer calories burned without additional validated inputs.
CONVERSIONS MADE CLEARSee how the
See how the
numbers connect.
For vial tracking, VYALS is designed to show how quantity, concentration, and volume relate, with the assumptions visible instead of hidden.
01
Enter the amount shown on your vial.
02
Enter the liquid volume for the calculation.
03
View the calculated concentration and volume with their units.
ILLUSTRATIVE CONVERSION
Understanding syringe units
On a U-100 scale, 100 units correspond to 1 mL. The scale below is only a visual example.
0.10 mL on a U-100 scale10 units
A calculation is not a verification of your product, syringe, or treatment plan.
BUILT FOR UNDERSTANDINGHelpful numbers.
Helpful numbers.
No guesswork about their meaning.
Calculators can help organize your information, but they cannot determine whether a medication, dose, injection, or regimen is appropriate. Always verify product details, units, and instructions with a qualified professional.
Units stay visibleClear labeling helps distinguish milligrams, milliliters, and syringe units.
Results follow your inputsCalculation outputs are based on the values entered, not automatically recommended targets.
Body metrics stay separateBMI and body-fat estimates are different calculations, with different meanings and limitations.
Your numbers, better organized.
VYALS brings calculations and daily tracking into one thoughtful experience. Stay updated as we prepare for launch.
Get Launch Updates ↗App previews are illustrative. Availability and features may change before release. Calculators are informational tools and are not medical advice.