Meters are commonly used inside the metric system, while they're equivalent in the Imperial (US) system is called feet.
The basic unit of time is the same in both the SI and US systems . . . the second.
The unit of time ... the 'second' ... is the same in both systems of measurement.
SI units describes the metric system units that are used in scientific data.
You can use one of the online converter for example http://www.unitarium.com to "convert units within the metric system"
imperial system * * * * * The Metric and Imperial systems are alternative systems! The metric system is properly known as the International System of Units, abbreviated, from its French name: Système international d'unités to SI units.
Please let see which units you are looking at.
Meters and Kilometers
Liters and MilliLiters
Grams and Kilogarms
There are many systems. A system is a collection of units which are used together. The two commonest are the SI units, based on the metric system, and imperial units (feet, pounds etc.)
two units of measurements are MKS and CGS systems
Some similarities of the metric and customary systems