Potting Mix Ratio
Split a batch of mix by parts into each ingredient.
About Potting Mix Ratio
A mix described in parts, like 2:2:1, assigns each ingredient a share of the total proportional to its part count. Reproducible potting mixes keep seedlings and containers consistent, which is why recipes are written in parts not volumes.
Formula
Potting Mix Ratio
Each ingredient = total ÷ sum of parts x its own parts
- parts
- Relative share of each ingredient in the recipe
Worked example
With the default values below, Potting Mix Ratio returns Ingredient A of 3.60. Change any input above and every figure here is recalculated in your browser.
Inputs used
- Parts ingredient Aminimum 1
- 2
- Parts ingredient Bminimum 0
- 2
- Parts ingredient Cminimum 0
- 1
- Total batch sizeminimum 0 gal
- 9 gal
Results
- Ingredient A
- 3.60 gal
- Ingredient B
- 3.60 gal
- Ingredient C
- 1.80 gal
Step by step
- 1Values used
- 2Potting Mix Ratio
- 3Ingredient A= 3.60 gal
- 4Ingredient B= 3.60 gal
- 5Ingredient C= 1.80 gal
Assumptions and limits
- The result is derived only from the 4 inputs listed above. Anything not among them is not part of the calculation.
- In particular, this calculator does not take inflation, tax, fees or charges or compounding frequency into account.
- Figures are rounded for display to 2 decimal places, so totals built from several rounded parts can differ slightly from the unrounded arithmetic.
How these calculators are built and tested is described on the Methodology page. If a figure looks wrong, please report it.
Frequently Asked Questions
How is Potting Mix Ratio calculated?
Each ingredient = total ÷ sum of parts x its own parts A mix described in parts, like 2:2:1, assigns each ingredient a share of the total proportional to its part count.
Why does Potting Mix Ratio matter?
Reproducible potting mixes keep seedlings and containers consistent, which is why recipes are written in parts not volumes.
What values do I need to enter?
This calculator takes 4 inputs: Parts ingredient A, Parts ingredient B, Parts ingredient C, Total batch size. The pre-filled defaults are a realistic starting point — replace them with figures from your own environment for a result you can act on.