Free calculators and field-oriented explanations for electrical engineering, finance, solar energy and industrial applications.
Useful tools first — explanations, examples and FAQs underneath.
Motor current, cable size, voltage drop, PF, kVAR, kVA and power.
EMI, SIP, FD, RD, savings goals, PPF and budgeting.
Solar sizing, electricity cost and energy planning.
Star-delta, PF, CT/PT, VFD, harmonics, AHF and earthing.
kW to current using voltage, PF and efficiency.
Estimate capacitor requirement.
Monthly loan repayment estimate.
Long-term investment planning.
Estimate cable voltage drop.
Estimate required PV capacity.