Gardening Calculator Group

Soil and Beds Calculators

Quantify bed dimensions and soil properties without mixing volume, mass, or sampling bases.

Define the soil measurement first

Soil records that look similar may refer to wet mass, dry mass, bulk volume, pore space, or a sample taken at a particular depth. Read each field definition before substituting a laboratory or field value.

For bed materials, use settled working dimensions when possible. Newly placed soil and compost can change volume after watering, cultivation, or traffic.

Soil and bed calculators

Soil Bulk DensityCalculate soil bulk density from a dry core sample.Soil PorosityEstimate pore space from bulk and particle density.Available Soil WaterFind the water fraction held between field capacity and wilting point.Root Zone Water StorageEstimate usable water stored in the active root zone.Soil Moisture DeficitCompare current soil moisture with a target level.Soil Infiltration RateMeasure infiltration from water depth and elapsed time.Soil Percolation TimeEstimate time for a measured water depth to drain.Soil Organic Matter AdditionEstimate dry organic matter needed for a target mass-fraction increase.Soil Carbon StockEstimate organic carbon mass in a defined soil sample.Weighted Soil pHCombine two soil-zone pH readings by area.Lime Application AmountConvert a soil-test lime rate into product mass.Sulfur Application AmountConvert an elemental sulfur rate into an application amount.Gypsum Application AmountCalculate gypsum product from area and a prescribed rate.Soil Amendment BlendCalculate the amendment percentage in a finished soil blend.Potting Mix ComponentFind one component volume from a potting-mix fraction.Soil Electrical Conductivity DilutionEstimate a simple dilution factor for a high-EC extract.Salt Leaching RequirementCompare irrigation-water salinity with a root-zone salinity limit.Weighted Cation Exchange CapacityCombine two soil-layer CEC values by sampled depth.Soil Compaction ChangeExpress a measured bulk-density reduction as a percentage.Bed Settling AllowanceEstimate initial bed height from an expected settling share.Effective Rooting DepthReduce potential rooting depth for a restricted soil profile.Soil Test Sample CountAllow for unusable samples when planning soil-test collection.Soil Slope PercentageCalculate garden slope from vertical rise and horizontal run.Drainage Test RateCalculate a soil drainage-test rate from water-level change.Average Soil TemperatureAverage repeated soil-temperature readings from one depth.

Keep samples and bed volumes comparable

A single sample may not represent an entire bed. Note the sampling pattern, depth, moisture condition, and preparation method so a later test can be compared on the same basis.

Calculated amendment quantities still need soil-test context and local guidance. Apply a numerical result only after checking whether the source recommendation uses the same area, depth, and material basis.