Unit converter
Pressure, flow, temperature, length, power…
Motor data (NEC)
FLC, wire, breaker, fuse, starter
Pump-up test (actual CFM)Pro
Diagnose pump health from tank fill time
Motor amperage
1Φ / 3Φ HP → FLA
Belt length & pulley
Center distance formula
Voltage dropPro
3Φ NEC method
CFM converter
ACFM ↔ SCFM, HP estimate
Pressure converter
PSI, bar, kPa, atm
Receiver sizing
Tank gallons for event
Leak cost
$/yr lost to leaks
Pipe sizing
CFM by pipe diameter
Compression ratio
Discharge / suction (abs)
Pressure switch cut-in/cut-out
Differential, starts/hr, MAWP check
Air Dryers & Treatment
Dryer capacity correctionPro
Nameplate SCFM → actual at site conditions
Dewpoint converter
Pressure ↔ atmospheric dewpoint
Condensate load
Gallons/day water removed
ΔP energy costPro
$/yr lost to pressure drop
Oil & Piping
Oil aging / remaining life
Hours × temp × duty · Arrhenius derate
Oil compatibility chart
Mineral · PAO · PAG · ester · silicone · food-grade
Pipe properties chart
OD, ID, wall, weight, WP, volume — steel, copper, aluminum, HDPE
HVAC
AC tonnage
BTU or sqft → tons (climate zone)
Airflow CFM
Tons × 400 or Q ÷ (1.08 × ΔT)
Duct sizing
Round & rectangular from friction rate
Duct pressure drop
Fittings TEL → in.wc vs blower ESP
Manual J quick loadPro
Rough BTU/hr & tons from sqft
Superheat target
Fixed-orifice charging from IWB/ODB
Subcool (TXV)
Sat temp − liquid line temp
Evaporator ΔT
Return − supply, target by WB
SEER2 cost & upgradePro
$/yr cooling and payback
Heat pump balance pointPro
Thermal & economic crossover