Weight Calculator
Find weight W = m·g. Enter mass and g for weight, or weight and g for mass.
Input Data
Mass in kilograms (kg).
Gravitational acceleration (m/s²). Earth ≈9.81.
Value
Results
Weight in newtons (N).
686.7
Explanation note.
W=70kg × 9.81 = 686.7 N
At a glance:Weight W = m·g is the force of gravity on a mass. On Earth g≈9.81 m/s², so a 70 kg person weighs about 687 N. Mass is constant; weight varies with gravity.
Formula
W = m·g
m = W / g
How to Use
- Enter mass m and gravity g.
- The tool gives the weight W.
Case Studies
70 kg on Earth
W = 70 × 9.81 = 686.7 N.
FAQ
kg vs N?
kg is mass, N is weight.
On the Moon?
Use g≈1.62.
g value?
Earth 9.81.
Precision?
Shown to 4 digits.
Related Tools
References
Content review: Calculatorism Physics Team. Results are for reference only; please refer to the relevant authorities for the official figures.