Direct conversion
Result
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Engineering snapshot
—newton
—kilonewton
—pound-force
—kilogram-force
kgf and lbf are force units. kg and lb are mass units. This tool keeps that distinction explicit.
All equivalents
Mass → weight under gravity
Weight force
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Why this matters
Mass is an intrinsic quantity; weight is a force and changes with local gravitational acceleration. Standard kilogram-force is defined from standard gravity, not from whatever local gravity you enter here.
—lbf
—kgf
—kN
—g / g₀
F = m × a solver
Leave exactly one field blank. SI units: newtons, kilograms and m/s².
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F = m × a
Vector decomposition
—Fx (N)
—Fy (N)
—|F| check
—direction
Definitions
| Unit | N per unit |
|---|
Exact / conventional constants
1 lbf = 4.4482216152605 N.
1 kgf = 9.80665 N exactly by standard gravity.
1 dyne = 10⁻⁵ N exactly.
1 poundal = 0.138254954376 N.
For safety-critical engineering, verify source loads, sign conventions, safety factors, and applicable design standards separately. Unit conversion alone does not validate a design.