There is no single universal detergent dose
Laundry detergents differ in concentration, format and measuring system. The American Cleaning Institute recommends reading the product label because using too much or too little detergent can reduce cleaning performance.
Start from the package directions
Identify the dose stated for the product and the load condition it describes. Concentrated products can require much less volume than older or less-concentrated formulas, so copying a measurement from another detergent is unreliable.
Use a calculator only for transparent scaling
WashCareLab’s calculator can scale a label dose proportionally when you know the reference load weight and your actual load weight. It does not invent corrections for water hardness, washer type or soil level when those adjustments belong to the product instructions.
More is not automatically cleaner
Excess detergent can be difficult to rinse, while too little may leave soil behind. Use the label as the baseline and follow any product-specific adjustments for load size or soil.
Garment care labels, appliance manuals and laundry-product directions can be more specific than a general guide. Use them when they set a tighter limit.