There is 11.32 kg in 2.6 gallons of ketchup. To find it:
Multiply your desired quantity of 2.6 gallons by 3.785412.
Check the density of ketchup, which is approximately 1.15 g/ml.
Multiply the results from the above steps to find the weight in kilograms.
The following formula summarizes all steps:
quantity in kg = quantity in gallons × 3.785412 × density
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