Calculation tools · free

Installation calculators

Free tools for electricians, designers and DIY planners: cables, solar PV systems, batteries and unit conversions.

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Electrical

Cables, cross-sections, voltage drop.

E-01
Voltage drop

Voltage drop, minimum cross-section and maximum length for single- and three-phase circuits.
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E-02
Cable size by current

Minimum cable size by current-carrying capacity, with installation method, temperature and grouping.
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Solar PV & batteries

Panels, yield, storage.

Thermal

Heat pumps and ventilation.

T-01Coming soon
Heat pump size

Required heat pump capacity from floor area, insulation and climate zone.
T-02Coming soon
Heat-recovery ventilation flow

Air flow and heat recovery unit for home ventilation.

Conversions

Switching between electrical units.

C-01
Power – current converter

Convert between kW, kVA, A and HP, single- or three-phase, with power factor and efficiency.
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