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Help & supplies
Use the numbers from your label and instructions. We check the math. We do not tell you what to take or what to mix.
Looking for BAC water?
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Check the product instructions first. A link is not advice to use it.
What to have ready
Start with the instructions for your exact product.
- The right liquid. Use the liquid named in those instructions. Not every product uses BAC water.
- A way to measure it. Check the scale and the marks on your device.
- A record of your numbers. Keep the label and your result together.
We may earn a commission. We don’t add a markup; you buy directly from our partner. For laboratory research only. Not for human consumption or veterinary use.
The supplier’s water is for lab research only. We do not decide which product you need.
Need to count vials? Use the supply calculatorTwo directions, one relationship
Amount equals concentration multiplied by volume. Volume equals amount divided by concentration. Convert mcg to mg before using a concentration written in mg/mL.
For an arithmetic example, 300 mcg is 0.3 mg. At 3 mg/mL, that amount occupies 0.1 mL. In reverse, 3 mg/mL multiplied by 0.1 mL is 0.3 mg.
Why syringe units need a scale
On U-100 only, multiply mL by 100. That scale relationship does not identify the device's capacity, tick spacing or suitability. The U-100 converter keeps those distinctions visible.
Values are displayed with bounded decimal precision; very small nonzero results use scientific notation instead of becoming zero. These are arithmetic examples, not instructions to prepare or administer a product.
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PrivacyAmount-to-volume calculator
Know the amount in each mL? Put it here. We’ll find a volume or amount from your numbers. We do not choose a dose.
Choose the exact product before entering numbers. IU products, blends, solutions and lab water open their own calculators.