Convert, size and check electrical, instrumentation, mechanical and maintenance numbers. Every result comes with the formula, the assumptions and a worked example.
Enter your values, then select Calculate.
I = S × 1000 / (√3 × V) for three-phase; I = S × 1000 / V for single-phase.
Three-phase voltage is line-to-line RMS. This is load current, not a cable size or breaker recommendation. kVA is apparent power; power factor is not needed.
BUILT FOR YOUR MAINTENANCE DESK
Organize maintenance, track actions and see what needs attention. Each workbook includes formulas, a live dashboard with charts, dropdown lists, built-in checks and 500 blank rows ready for your records.
Schedule recurring PM tasks by frequency, see what is overdue or due soon, and track on-time completion.
Log each failure and get downtime, MTTR, MTBF, availability and the cost of failures including lost production.
Track calibration due dates with as-found and as-left pass or fail against tolerance for every instrument.
Stock levels, reorder alerts, suggested order values, critical spares and slow-moving stock in one register.
Record Pass, Fail or N/A for every check, set severity-based due dates and chase actions to closure.
Turn each investigation into owned, dated actions that count as closed only once verified.
Previews show each dashboard filled with fictional example data; your download opens with blank records. Click a preview to enlarge it. Adapt frequencies, tolerances and approval steps to your equipment and site procedures.
SHOW THE WORK
Every calculator shows its equation, units and limits. Enter your own values to calculate a result. Inputs start blank every time you open or switch tools.
Read the formula and reference alongside the result.
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These tools support estimates and learning. Verify against equipment data and applicable requirements before making a design or operating decision.