How to use the agar plates from volume calculator
Find how many petri plates a volume of agar will fill and how much is left over. Enter total agar volume, agar per 90 mm plate in the fields above; the plates that can be poured, agar left over are computed instantly and plotted on the chart so you can see how the answer changes.
Common searches this calculator answers include “how many plates from agar”, “agar plate volume”, “pouring plates calculator”, “calculate agar plates from volume”, “find plates that can be poured”.
Formula
Variables
- V — Total agar volume (mL)
- vp — Agar per 90 mm plate (mL)
Worked example
With total agar volume = 1000 mL, agar per 90 mm plate = 25 mL, the calculator gives plates that can be poured ≈ 40; agar left over ≈ 0 mL.
Frequently asked questions
What is the agar plates from volume calculator used for?
Find how many petri plates a volume of agar will fill and how much is left over. It helps with questions such as “how many plates from agar”, “agar plate volume”, “pouring plates calculator”.
What is the formula for the agar plates from volume calculation?
Plates that can be poured = floor(V / vp). Agar left over (mL) = V-[Plates that can be poured] × vp. Here V is total agar volume (mL), vp is agar per 90 mm plate (mL).
What inputs do I need for the agar plates from volume calculator?
You need total agar volume in mL, agar per 90 mm plate in mL. Each field is pre-filled with a typical example so you can see how the result responds as you edit the numbers.
How do I use the agar plates from volume calculator?
Type values into the input fields. Results and the chart update instantly. Use Reset to restore the example values, Copy results to paste them elsewhere, or Share to copy a link that preserves your inputs.
Is the agar plates from volume result exact?
Calculations use standard formulas and double-precision arithmetic, then display about seven significant figures. Real-world measurements carry uncertainty, so treat results as estimates unless your inputs are exact.