MixByParts
Coolant calculators

30% coolant / 70% water in 500 mL

Coolant : Water · Ratio by volume

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Includes coolant + water. Changing units converts the same total.

Coolant : Water · Ratio by volume

30% coolant concentrate + 70% water by volume.

Precision & gram targets

Gram targets are derived from these volumes using entered densities; the ratio remains by volume.

Amounts update as you type.

500 mL final mixture

Includes coolant + water. Ratio by volume.

CoolantConcentrate by volume
150mL
WaterBy volume
350mL

Rounded to 1 mL. Displayed total: 500 mL.

Add 150 mL Coolant and 350 mL Water to make 500 mL.

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What does this ratio mean?

Each component = final mixture × its ratio parts ÷ all ratio parts combined. The final mixture includes all named components. Volumes are treated as additive, and displayed amounts are rounded together to the displayed total.

For a fresh mixture of coolant concentrate and water. Ready-to-use premix is already diluted; follow the exact product and vehicle instructions.

The parts are relative amounts, not independent percentages. For example, 30 parts concentrate + 30 parts water makes a 50% concentrate mixture.

Other batch sizes · 30% coolant / 70% water

5 liters250 mL750 mL
Other ratios & sizes

More presets based on 30% coolant / 70% water and 500 mL. Ratios are mathematical presets; check your product instructions.

16 oz24 oz32 oz1 gallon1 liter15 liters
40% coolant / 60% water50/50 coolant mix60% coolant / 40% water70% coolant / 30% water
Browse all coolant calculators →

How to mix 30% coolant / 70% water in 500 mL

  1. Confirm that the exact product instructions specify the current coolant:water ratio shown in the calculator by volume.
  2. Measure the current Coolant concentrate and Water amounts shown in the calculator. The final mixture includes both components.
  3. Combine only the named components in the order required by the product instructions. Do not add unlisted liquid.