Weight Calculator (Mass × Gravity)
Converts mass to weight, the force of gravity on it.
Weight
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Share sends a link that reopens these numbers. Copy details pastes the full breakdown as a list.
Gravity used — m/s²
Reads on a scale calibrated for Earth — kg
The same mass elsewhere
The formula
W = m × g
Mass stays the same everywhere; weight is the force gravity exerts on it, and it changes with g. Planet figures are rounded, and the real value varies across each planet.
What to watch out for
Everyday “weight” in kilograms is really mass. Scales measure force and divide by Earth’s gravity.
Frequently Asked Questions
What does 70 kg weigh in newtons?
686.47 N (154.32 lbf) in standard Earth gravity.
What would 70 kg weigh on the Moon?
113.4 N, about a sixth of the figure on Earth. A scale would read 11.6 kg.