Pump Engineering Calculators & Sizing Tools
36 free interactive engineering calculators for pump sizing, NPSHa margins, pipe friction, chemical compatibility, mechanical seals, and total lifecycle costs — built for chemical, pharma, dairy, and water-treatment plants across India.
36 of 36 tools
Pump sizing
From duty point to motor frame
Pump sizing
Chemical pump sizing calculator
TDH, hydraulic and shaft power, IS motor frame and wetted-material guidance for acids and alkalis.
Pump sizing
Pump power calculator
Hydraulic and motor power from flow, head, efficiency and SG.
Pump sizing
Motor power & current calculator
IS 1231 frame, full-load and duty current at 415 V, starter selection.
Pump sizing
Pipe sizing calculator
Suction and discharge DN with velocity bands and friction loss.
Pump sizing
Pipe head-loss calculator
Darcy-Weisbach friction, fittings and pressure drop.
Pump sizing
Pump curve & system curve tool
Find the operating point where pump and system curves cross.
Pump sizing
Pumps in series vs parallel
Compare arrangements on your system curve, with fighting warnings.
Pump sizing
Slurry pump sizing
Slurry density, head margin and motor for abrasive duties.
Pump sizing
Booster pump sizing
Head from supply and desired pressure for boosting and RO.
Pump sizing
Boiler feed pump sizing
Feed flow, head and motor for multistage feed duties.
Pump sizing
ETP pump sizing
Design flow, TDH and motor for effluent treatment plants.
Pump sizing
Pump type selector
Centrifugal, magnetic drive, diaphragm or peristaltic — a 7-question wizard.
Pump sizing
Pump specification builder
Build a structured pump datasheet and send it for a Teflow quote.
Pump sizing
Specific speed calculator
Ns and Nss with impeller type and recirculation flags.
Suction & NPSH
Keep the pump from cavitating
Energy & economics
Running cost, payback and ownership
Energy & economics
Pump energy cost calculator
Annual electricity cost in rupees from kW, hours and Indian tariff.
Energy & economics
VFD payback calculator
Affinity-law savings and payback period for drive retrofits.
Energy & economics
Pump life cycle cost calculator
CAPEX + energy + maintenance, with repair-vs-replace decision.
Energy & economics
Pump overhaul cost estimator
Parts and labor ranges for overhaul — quote after inspection.
Energy & economics
Repair cost estimator
Quick parts, labor and turnaround range for pump repairs.
Chemicals & materials
Match the pump to the liquid
Chemicals & materials
Chemical compatibility selector
PTFE, PFA, PP, SS316 and elastomer ratings at your temperature.
Chemicals & materials
Fluid properties database
Density, viscosity, SG and vapour pressure for pumping chemicals.
Chemicals & materials
Mechanical seal selector
Seal faces, elastomers and API 682 flush plans.
Chemicals & materials
Magnetic drive pump sizing
Sealless sizing with dry-run, solids and temperature checks.
Chemicals & materials
Viscosity correction calculator
HI 9.6.1-style factors for viscous liquid duties.
Chemicals & materials
Control valve Cv calculator
Cv sizing with choked-flow and cavitation checks (ISA 75.01).
Applications
Dosing, CIP, neutralization
Applications
Dosing pump sizing calculator
L/h from dose, flow and purity, with ETP reagent presets.
Applications
pH neutralization calculator
NaOH required to neutralize acidic tanks, with dosing rate.
Applications
CIP flow & heating calculator
Line flow, wash heating energy and cost for dairy and pharma.
Applications
RO recovery calculator
Feed, concentrate and concentrate TDS from recovery.
Maintenance & diagnosis
Find the fault, plan the fix
Maintenance & diagnosis
Pump vibration diagnosis
ISO 10816 zone checker with fault hints.
Maintenance & diagnosis
Impeller trim calculator
New duty from trim, with practical trim limits.
Maintenance & diagnosis
Affinity laws calculator
Speed, frequency and trim changes — Q, H, P ratios.
Converters
Units, pressure and flow
Converters
Pressure ↔ head converter
bar, kg/cm², psi, kPa, MPa to metres at your SG.
Converters
Flow unit converter
m³/h, L/min, L/s, GPM, m³/s with mass flow by SG.
Converters
Pump unit converter suite
Pressure, flow, power, temperature and viscosity in one page.
Can't Find the Exact Calculator You Need?
Our chemical pump engineers size systems, compute NPSHa margins, and optimize duty curves daily. Call or message us with your fluid parameters.