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Soil blend by volume parts calculator

Divide a garden mix volume into three user-chosen component ratios.

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Your result

Component A volume50L
Component B volume25L
Component C volume25L

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How to calculate

Soil blend by volume partsSoil blend by volume partsSoil blend by volume partsAdd the parts first. A 2:1:1 recipe has four total parts, so a 100-litre batch uses 50, 25 and 25 litres. Concept diagram; not to scale.Soil blend by volume partsTotal blendvolume (L)100Component Aparts2Component Avolume50 LMyCalCute.comTotal blend volume (L)100Component A parts2Component A volume50 L
Soil blend by volume partsAdd the parts first. A 2:1:1 recipe has four total parts, so a 100-litre batch uses 50, 25 and 25 litres. Concept diagram; not to scale.Soil blend by volume partsTotal blendvolume (L)100Component Aparts2Component Avolume50 LMyCalCute.com
Add the parts first. A 2:1:1 recipe has four total parts, so a 100-litre batch uses 50, 25 and 25 litres. Concept diagram; not to scale.

Divide a garden mix volume into three user-chosen component ratios.

Component A volume = total*a/(a+b+c) L
Component B volume = total*b/(a+b+c) L
Component C volume = total*c/(a+b+c) L

Worked example

  • Total blend volume (L): 100
  • Component A parts: 2
  • Component B parts: 1
  • Component C parts: 1
  • Component A volume: 50 L
  • Component B volume: 25 L
  • Component C volume: 25 L

Assumptions and limits

Volume parts are not mass parts. Compaction, swelling, moisture, suitability for plants and nutrient requirements are excluded. This does not recommend a recipe.

Results are rounded for display; calculations use unrounded values. Read our calculation methodology.

Understanding the result

Divide a garden mix volume into three user-chosen component ratios. Add the parts first. A 2:1:1 recipe has four total parts, so a 100-litre batch uses 50, 25 and 25 litres.

When this tool is useful

Add the parts first. A 2:1:1 recipe has four total parts, so a 100-litre batch uses 50, 25 and 25 litres.

Understanding your inputs

InputExample
Total blend volume (L) total100
Component A parts a2
Component B parts b1
Component C parts c1

Frequently asked questions

What does this estimate leave out?

Volume parts are not mass parts. Compaction, swelling, moisture, suitability for plants and nutrient requirements are excluded. This does not recommend a recipe.

How do I check the example?

Use the stated units and the formula below. Keep full precision until the final answer; change one input at a time to see its effect.

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