// multi-utility computation suite · offline · instant · precise
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sci.soil-sampling-cation-exchange Calculator
Calculates soil cation exchange capacity from a sampling protocol and converts between meq/100 g and cmol/kg (numerically equal). CEC determines how much lime is needed to raise soil pH — increasing CEC from 5 to 15 cmol/kg requires approximately 3× more lime for the same pH change.
Inputs
Ca Meq 100G
Reference formula or conversion factor shown for context.
Mg Meq 100G
Reference formula or conversion factor shown for context.
K Meq 100G
Reference formula or conversion factor shown for context.
Na Meq 100G
Reference formula or conversion factor shown for context.
H Meq 100G
Reference formula or conversion factor shown for context.
Results
CEC (meq/100g)
Reference formula or conversion factor shown for context.
Ca saturation (%)
How close the system is to its capacity limit. Above 80% sustained saturation typically leads to queuing and latency spikes.
Mg saturation (%)
How close the system is to its capacity limit. Above 80% sustained saturation typically leads to queuing and latency spikes.
K saturation (%)
How close the system is to its capacity limit. Above 80% sustained saturation typically leads to queuing and latency spikes.
base saturation (%)
How close the system is to its capacity limit. Above 80% sustained saturation typically leads to queuing and latency spikes.
ideal ratios
The proportional relationship between two quantities.