A place to check the math.
BACwater.ai provides free tools for concentration, mass units and syringe-volume conversions. The calculators work without an account. Optional accounts organize saved calculations, PDFs and printable labels.
You supply the instructions. We calculate the relationship.
Enter a stated vial amount, final liquid volume and amount to measure. The planning engine calculates concentration, volume and the corresponding scale reading. It does not select a medication, dose, diluent or treatment schedule.
The methodology page shows the formulas, worked examples and rounding limits. We do not claim that displayed precision proves physical measurement accuracy.
References are not product verification.
Educational pages link to source material and separate calculation examples from product instructions. A cited study does not verify a purchased vial or establish whether its contents are appropriate for someone. We do not present this website as a licensed clinician or a product-testing laboratory.
Read the editorial policy for how factual corrections and review limitations are handled. Product-specific medical questions belong with the dispensing pharmacist or prescriber.
Saved plans and support
A shared calculation link can be read by anyone who receives it. Private notes and custom plan names remain restricted to owner access. Avoid putting personal medical details into a public-facing calculation name. The privacy page explains the site's data handling.
The current public site has no product checkout. Questions about a calculation, account or website problem can go through Contact. Include the page and steps to reproduce a bug, not passwords, payment details or private medical records.
Publisher and corrections
BACwater.ai publishes these tools and references. For a calculation error or factual correction, contact the BACwater.ai website support team with the public page and the source or steps needed to check it. Editorial attribution does not imply clinical review.