Instant · Precise · Universal
34 units available
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To convert to kilograms: multiply by 9.80665.
1 kgf·s²/m = 9.80665 kg (exactly), based on standard gravity g₀ = 9.80665 m/s².
For example, 1 Kilogram-force second²/meter (kgf·s²/m) = 5.206523e+28 Muon Mass (mμ).
| Kilogram-force second²/meter (kgf·s²/m) | Muon Mass (mμ) |
|---|---|
| 0.1 | 5.206523e+27 |
| 0.5 | 2.603261e+28 |
| 1 | 5.206523e+28 |
| 2 | 1.041305e+29 |
| 5 | 2.603261e+29 |
| 10 | 5.206523e+29 |
| 25 | 1.301631e+30 |
| 50 | 2.603261e+30 |
| 100 | 5.206523e+30 |
| 500 | 2.603261e+31 |
| 1000 | 5.206523e+31 |
The kilogram-force second squared per meter is an engineering unit of mass in the gravitational metric system, equal to about 9.807 kg.
1 kgf·s²/m = 9.80665 kg (exactly), based on standard gravity g₀ = 9.80665 m/s².
To convert to kilograms: multiply by 9.80665.
Historical engineering calculations where force was in kgf and F=ma needed consistent units.
This unit is the metric equivalent of the slug (imperial system). Just as 1 lb-force accelerates 1 slug at 1 ft/s², 1 kgf accelerates this unit at 1 m/s².
Mixing up mass (kg) and weight (kgf) in the gravitational system. SI removed this confusion by using newtons for force.
This unit exists because the gravitational system used kgf (force) as base, so a derived mass unit was needed for F=ma to work.
The muon mass is the rest mass of the muon particle, approximately 1.884 × 10⁻²⁸ kilograms or about 207 times the electron mass.
mμ ≈ 206.77 × mₑ ≈ 0.1126 × mₚ (proton mass) = 105.66 MeV/c².
To convert muon masses to kg: multiply by 1.883531627 × 10⁻²⁸.
Muon tomography (imaging volcanoes, pyramids), muon-catalyzed fusion, and cosmic ray detection.
The muon's discovery prompted physicist I.I. Rabi to quip 'Who ordered that?' — it was completely unexpected.
Muons are not mesons — they're leptons (like electrons), not quark-antiquark pairs.
Think of a muon as a 'fat electron' — same charge, same spin, but 207× heavier. It decays in about 2.2 microseconds.



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