why do scientists use the si system of measurement

1. It's a decimal system advancing in powers of ten. Others, like the Imperial, used a confusing mess of multiples: 12 inches = 1 foot, 3 feet = 1 yard, 22 yards = 1 chain, et
c. 2. The SI is based on simple, basic dimensions of mass (kilogram), length (metre) and time (second).

Other units are some combination of these and can always be referred back to the basics. There are a few other fundamental units - go to Wikipedia and look under SI. 3. Now that SI is widely used, there is much less confusion about quantities.

P 4. Uniformity also eliminates confusion. The U. S. (short) ton is 2,000 pounds. The Imperial (long) ton is 2240. The U. S. and Imperial gallons are also different, so U. S. gas mileage is not as good as British petrol mileage - for the same car! 5.

Scientifically, if I describe an alloy of steel by weight of constituents per 1000 kg, you can make that exact same metal even without a sample. If I give you exact by-weight measurements for concrete in kilograms, you can make the same concrete to the same specifications.

Scientists use the same system of measurement so they can have a universal way to interpret data. Having the same system, which is now metric, helps so that no errors are made while converting to other systems.

This also saves time. Think of it like two different languages, it would be easier if there was just one universal language so no time was wasted and no errors were made while translating.