30% coolant / 70% water in 250 mL

Precise mix & dilution math. Toggle by volume/weight, edit density, copy-to-label.

MixByPartsCalculator modal

30% coolant / 70% water in 250 mL

Label-ready line

Add 1.938 mL Part A, 248.1 mL Part B; fill to 250 mL.

Mix setup

Volume mixing

ModeMix by

Total batchUnit

Formula inputs

Part APart B

Density A (g/mL)Density B (g/mL)

Finishing touches

Rounding preset

Exact amounts (pre-calculated)

Part A75 mL by volume78.8 g
Part B175 mL by volume175.0 g

Add 75 mL Part A, 175 mL Part B; fill to 250 mL.

How to mix 30% coolant / 70% water in 250 mL

This calculator preloads a 30% coolant / 70% water dilution inside a 250 mL container. Confirm the total volume, then follow the product and water amounts surfaced above. Toggle the weight view if you prefer weighing by grams or need density adjustments for thicker concentrates.

Note the exact product and carrier amounts in the "Exact amounts" card. That output updates instantly as you tweak totals or rounding.
Pour the product part first so you can rinse residue with the larger carrier volume.
Top up with water or solvent until you hit the target fill line, then gently invert or stir to homogenize the mix.

Accuracy tips

Need to batch multiple bottles? Duplicate this preset, change the container size, and use the "Copy label" line for fast relabelling. When mixing by weight, enter actual densities so the gram figures hit your process tolerances.

Other containers for 30% coolant / 70% water

5 liters 16 oz 24 oz 32 oz 1 gallon 500 mL 750 mL 1 liter 15 liters

Other ratios for 250 mL

40% coolant / 60% water 50/50 coolant mix 60% coolant / 40% water 70% coolant / 30% water

How this is calculated

For a ratio of a:b, each part is a/(a+b) and b/(a+b) of the total. PPM mode uses 1 ppm ≈ 1 mg/L for aqueous solutions. Switch to "Mix by weight" to convert those fractions into gram targets using your provided densities.