If you are doing this for scientific reasons, using the metric system of grams(g), kilograms(kg), and milligrams(mg) would be the best, since most formulas for science require metric system units. Just try and use the lowest whole number you can. For instance, if your are weighing a person you would use kg. If you are weighing something small like a pencil, then you would use grams.
kilograms or lbs
Do to its size, the mass of a peanut would probably best be measured in grams.
That is optional. The best unit of measurment would probably be tons.By:Donny Heitler
You would use the unit of measure called "kilograms" to measure the mass of an elephant.
The best metric unit to measure the mass of an elephant would be kilograms (kg). This unit is commonly used for larger objects like elephants due to their substantial weight.
Gram.
Strawberries would be measured in grams or ounces.
You Use Atomic Mass Number
Kilograms
Grams
Centimeters
Milligram: to measure its mass.