Mass Converter
Convert
Enter a value and pick the source and target units; the result updates live.
—
Mass is a measure of the amount of matter. The SI unit is the kilogram (kg); imperial units include ounces, pounds and stones. In electronics, mass comes up in shipping, heatsink sizing, and mechanical mounting.
Conversions are exact (1 lb = 0.45359237 kg by definition). Watch the difference between mass (kg) and weight (a force, newtons) — this converter handles mass only.
Common applications
Converting a package weight from lb to kg for shipping; reading a part's mass in g; comparing a heatsink's mass in oz vs. g.
Frequently asked questions
The kilogram (kg).
1 lb = 0.45359237 kg (exactly).
No. Mass is the amount of matter (kg); weight is the force of gravity on that mass (newtons). This converter handles mass.