The EC to TDS Converter estimates the total dissolved solids of a water sample from its electrical conductivity using the relation TDS = EC × factor. Because conductivity rises predictably as dissolved ion content increases, an EC reading serves as a fast proxy for TDS — no evaporation or weighing required. Selecting the right factor for your salt profile (about 0.5 for NaCl-type waters, up to 0.7 for others) makes the estimate more accurate.
Electrical conductivity (EC), measured in microsiemens per centimeter (µS/cm), quantifies how well water conducts electricity, which depends on the concentration and mobility of its dissolved ions. Total dissolved solids (TDS) is the mass of those dissolved minerals and salts, expressed in parts per million (ppm) — effectively milligrams per liter for water. EC is what a meter actually measures; TDS is the quantity most guidelines and product specifications are written in.
This is the everyday conversion behind most handheld TDS meters, which measure EC internally and display a converted TDS value. It is used to judge drinking-water quality (palatability and scaling potential), to manage nutrient strength in hydroponics, and to monitor water conditions in aquaculture, where both fish health and feeding regimes depend on stable dissolved mineral levels.