I'm publishing structural load data and need to express kN in CGS units to compare with a historical seismic dataset. How do I convert?

Multiply kN by 100,000,000 to get dynes. For example, 5 kN = 500,000,000 dynes. Note that seismic moment is typically in dyne·cm, not dynes alone — make sure you're comparing the right quantities.

My seismic research mentions dyne·cm (seismic moment). How does that relate to kN structural forces?

Seismic moment (dyne·cm) measures rotational energy release, not the same as a structural force (kN). The unit conversion is: 1 dyne·cm = 10⁻¹⁰ kN·m. They're dimensionally similar (force × distance) but physically distinct measurements.

Is there any practical reason to use dynes instead of newtons or kilonewtons in modern work?

Rarely. Dynes persist in CGS-system chemistry (surface tension in dynes/cm) and historical seismology (dyne·cm seismic moment). For any new engineering or physics work, use SI — newtons for individual forces, kilonewtons for structural-scale loads.

What's the relationship between kilonewtons and kilogram-force?

1 kN ≈ 102 kgf. Both measure force on the engineering scale — kN is SI standard, kgf is legacy industrial. See [kilonewtons to kilogram-force]({/force/kn-to-kgf/}) for practical industrial conversions.

Kilonewtons (kN) to Dynes Converter

Enter a value to instantly convert between force units.

From

Precision4 dp

1 Kilonewton = 100000000 Dyne

Key Formulas

Newton → Pound-Force

lbf = N × 0.224809

Pound-Force → Newton

N = lbf × 4.44822

Kilogram-Force → Newton

N = kgf × 9.80665

Newton → Kilogram-Force

kgf = N × 0.101972

Formula

dynes = kN × 100000000

Seismologists and geophysicists working with historical earthquake catalogs encounter seismic moment in dyne·cm — a CGS quantity that predates SI adoption. When comparing modern instrumentation data (in kN or N·m) against archived moment magnitudes, converting kilonewtons to dynes is necessary. Outside seismology, this conversion is extremely rare; kilonewtons describe structural-scale forces while dynes describe microscopic ones, and the 10⁸ scale gap makes cross-referencing unusual.

Source: NIST SP 811, Table B.8

Last reviewed: 2026-06-11 · see our methodology

Frequently Asked Questions

Real-World Examples

A 1 kN structural load — expressed as 100 million dynes in CGS, illustrating why dynes are impractical at engineering scales.

1 kN = 100000000 dyn

A 10 mN (0.00001 kN) micro-actuator force — 1,000 dynes in CGS, closer to the range where both unit systems yield readable numbers.

0.00001 kN = 1000 dyn

A 100 kN bridge cable tension — 10 billion dynes, demonstrating why CGS never became the language of structural engineering.

100 kN = 10000000000 dyn

A 100 nN (0.0000001 kN) atomic-force microscope cantilever force — 10 dynes, one of the few contexts where both units are practical.

1e-7 kN = 10 dyn

newtons to lbf lbf to newtons kgf to newtons newtons to kgf kn to newtons newtons to kn

Kilonewtons (kN) to Dynes Converter

Key Formulas

Formula

Frequently Asked Questions

Real-World Examples

Related Converters