// multi-utility computation suite · offline · instant · precise
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sci.Coulomb-electric-force Calculator
Calculates electrostatic force between two point charges: F = kq₁q₂/r², and electric field E = F/q₂ at distance r. Coulomb constant k = 8.99 × 10⁹ N·m²/C² — two 1-coulomb charges 1 m apart exert ~9 × 10⁹ N (equal to the weight of a million tonnes).
Inputs
Q1 Nc
Reference formula or conversion factor shown for context.
Q2 Nc
Reference formula or conversion factor shown for context.
R Mm
Reference formula or conversion factor shown for context.
Eps R
Reference formula or conversion factor shown for context.
Results
Coulomb force F (μN)
Sample size or count used in the calculation.
force type
The classification or type assigned based on the inputs.
electric field from q₁ at r (kV/m)
The value at the specified point or condition.
F = kq₁q₂/(εr·r²)
Reference formula or conversion factor shown for context.
force ratio vs vacuum
The proportional relationship between two quantities.
electric field E (V/m)
Reference formula or conversion factor shown for context.