// multi-utility computation suite · offline · instant · precise
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eng.spring-rate-series-parallel Calculator
Calculates equivalent spring stiffness for springs in series and parallel, and energy stored under a given load. Springs in parallel share load proportionally to stiffness; in series, all carry the same load — the reciprocal rule for series springs is identical to parallel capacitors.
Inputs
K1 N Mm
Amount per unit of time or per unit quantity. Check the denominator before interpreting.
K2 N Mm
Amount per unit of time or per unit quantity. Check the denominator before interpreting.
K3 N Mm
Amount per unit of time or per unit quantity. Check the denominator before interpreting.
Arrangement
Reference formula or conversion factor shown for context.
Results
effective spring rate (N/mm)
The value at the specified point or condition.
arrangement
The difference between the maximum and minimum values.
deflection at 100N
Maximum lateral displacement of the beam under load. Codes typically limit to L/360 for floors (to avoid cracking finishes) or L/240 for roofs. Excessive deflection signals the beam is undersized.
series: 1/k_eff = Σ(1/kᵢ)
Reference formula or conversion factor shown for context.
parallel: k_eff = Σkᵢ
Reference formula or conversion factor shown for context.
resonant frequency (at 1kg mass)
Frequency at which the LC circuit naturally oscillates, with energy alternating between inductor and capacitor. F = 1/(2π√LC). Used in radio tuners and oscillators.