Engineering & Electrical
32 free engineering & electrical that run instantly in your browser — no downloads, no sign-up, and nothing you enter ever leaves your device.
Watts to Amps Calculator
Calculate watts to amps instantly online — free, accurate, and 100% private. No sign-up, no data uploaded, works on any device.
Amps to Watts Calculator
Calculate amps to watts instantly online — free, accurate, and 100% private. No sign-up, no data uploaded, works on any device.
kVA to Amps Calculator
Calculate kva to amps instantly online — free, accurate, and 100% private. No sign-up, no data uploaded, works on any device.
kW to kVA Calculator
Calculate kw to kva instantly online — free, accurate, and 100% private. No sign-up, no data uploaded, works on any device.
Power Factor Calculator
Calculate power factor instantly online — free, accurate, and 100% private. No sign-up, no data uploaded, works on any device.
Three Phase Power Calculator
Calculate three phase power instantly online — free, accurate, and 100% private. No sign-up, no data uploaded, works on any device.
Voltage Drop Calculator
Calculate voltage drop instantly online — free, accurate, and 100% private. No sign-up, no data uploaded, works on any device.
LED Resistor Calculator
Calculate led resistor instantly online — free, accurate, and 100% private. No sign-up, no data uploaded, works on any device.
RC Time Constant Calculator
Calculate rc time constant instantly online — free, accurate, and 100% private. No sign-up, no data uploaded, works on any device.
LC Resonant Frequency Calculator
Calculate lc resonant frequency instantly online — free, accurate, and 100% private. No sign-up, no data uploaded, works on any device.
Transformer Turns Ratio Calculator
Calculate transformer turns ratio instantly online — free, accurate, and 100% private. No sign-up, no data uploaded, works on any device.
Horsepower to kW Calculator
Calculate horsepower to kw instantly online — free, accurate, and 100% private. No sign-up, no data uploaded, works on any device.
kW to Horsepower Calculator
Calculate kw to horsepower instantly online — free, accurate, and 100% private. No sign-up, no data uploaded, works on any device.
Motor Full Load Current Calculator
Calculate motor full load current instantly online — free, accurate, and 100% private. No sign-up, no data uploaded, works on any device.
AC Tonnage Calculator
Calculate ac tonnage instantly online — free, accurate, and 100% private. No sign-up, no data uploaded, works on any device.
Solar Panel Size Calculator
Calculate solar panel size instantly online — free, accurate, and 100% private. No sign-up, no data uploaded, works on any device.
Inverter Battery Backup Calculator
Calculate inverter battery backup instantly online — free, accurate, and 100% private. No sign-up, no data uploaded, works on any device.
Appliance Running Cost Calculator
Calculate appliance running cost instantly online — free, accurate, and 100% private. No sign-up, no data uploaded, works on any device.
Gear Ratio Calculator
Calculate gear ratio instantly online — free, accurate, and 100% private. No sign-up, no data uploaded, works on any device.
Pulley RPM Calculator
Calculate pulley rpm instantly online — free, accurate, and 100% private. No sign-up, no data uploaded, works on any device.
Belt Length Calculator
Calculate belt length instantly online — free, accurate, and 100% private. No sign-up, no data uploaded, works on any device.
Torque Calculator
Calculate torque instantly online — free, accurate, and 100% private. No sign-up, no data uploaded, works on any device.
Stress Calculator
Calculate stress instantly online — free, accurate, and 100% private. No sign-up, no data uploaded, works on any device.
Factor of Safety Calculator
Calculate factor of safety instantly online — free, accurate, and 100% private. No sign-up, no data uploaded, works on any device.
Fluid Pressure at Depth Calculator
Calculate fluid pressure at depth instantly online — free, accurate, and 100% private. No sign-up, no data uploaded, works on any device.
Reynolds Number Calculator
Calculate reynolds number instantly online — free, accurate, and 100% private. No sign-up, no data uploaded, works on any device.
kW to Amps Calculator
Calculate kw to amps instantly online — free, accurate, and 100% private. No sign-up, no data uploaded, works on any device.
Capacitor Energy Calculator
Calculate capacitor energy instantly online — free, accurate, and 100% private. No sign-up, no data uploaded, works on any device.
Battery Charge Time Calculator
Calculate battery charge time instantly online — free, accurate, and 100% private. No sign-up, no data uploaded, works on any device.
Wire Resistance Calculator
Calculate wire resistance instantly online — free, accurate, and 100% private. No sign-up, no data uploaded, works on any device.
Series Resistor Calculator
Calculate series resistor instantly online — free, accurate, and 100% private. No sign-up, no data uploaded, works on any device.
Parallel Resistor Calculator
Calculate parallel resistor instantly online — free, accurate, and 100% private. No sign-up, no data uploaded, works on any device.
Free Engineering & Electrical on wajid.in
wajid.in brings together 32 free engineering & electrical in one place, covering Electrical Power, Motors, Solar & HVAC, Mechanical, More Electrical. Whether you are on a phone or a laptop, each tool runs entirely inside your browser — there is nothing to install, no account to make, and no file ever gets uploaded to a server. That means faster results and complete privacy.
Pick any tool above to get started instantly. You can star the ones you use most so they are always a click away.
Why use these Engineering & Electrical?
100% private
Your files and inputs are processed on your device and never uploaded, so nothing you do with these engineering & electrical is sent to a server.
Instant & online
No installs and no waiting — each tool loads and works in seconds, directly in your browser on mobile or desktop.
Free forever
Every tool is free with no sign-up, no watermark, and no usage cap. Use them as often as you like.
Frequently Asked Questions
Yes. All 32 engineering & electrical on wajid.in are completely free, with no sign-up, no usage limits, and no hidden charges.
No. Every tool opens and runs right in your web browser on any device — there is nothing to download and no account to create.
Yes. These tools process everything locally on your device. The files you open and the details you type are not uploaded to any server, so your data stays private.
Some of the most-used engineering & electrical here include Watts to Amps Calculator, Amps to Watts Calculator, kVA to Amps Calculator, kW to kVA Calculator. You can browse the full list above and star your favourites for quick access.