Engineering Tools
Free, in-browser tools for everyday engineering calculations. Formulas and references are listed under each tool.
Electronics Tools
Calculators for RF, data converter and PCB design.
- E.01
RMS ↔ Vpp Voltage Calculator
Convert between RMS, peak and peak-to-peak voltage; sine, square, triangle and custom crest factor.
Open tool - E.02
dBm ↔ Power ↔ Voltage Converter
Instant conversion between dBm, dBW, W, Vrms, Vpp and dBµV at a chosen impedance.
Open tool - E.03
ADC Performance Calculator
Ideal SNR, LSB voltage and processing gain from resolution; ENOB from measured SINAD.
Open tool - E.04
VSWR ↔ Return Loss Calculator
VSWR, return loss, reflection coefficient and mismatch loss — also from a load impedance.
Open tool - E.05
Microstrip Impedance Calculator
Characteristic impedance from PCB trace width, or trace width for a target impedance.
Open tool - E.06
Phase Noise → Jitter
RMS jitter from oscillator phase noise, and the ADC SNR limit it imposes.
Open tool - E.07
PCB Trace Current Capacity
Trace width from current and allowed temperature rise (IPC-2221); resistance, voltage drop and power loss.
Open tool - E.08
RC / RL / LC Filter Calculator
RC and RL cut-off frequency and time constant; LC resonant frequency and characteristic impedance.
Open tool
Mechanical Engineering Tools
Calculators for process plant pre-sizing: conveyors, piping, pumps, drying, dust collection and storage.
- M.01
Belt Conveyor Capacity
Load cross-section and capacity in t/h from belt width, speed, trough and surcharge angle (ISO 5048).
Open tool - M.02
Pipe Pressure Drop
Velocity, Reynolds number, friction factor and pressure drop (Darcy-Weisbach + Colebrook).
Open tool - M.03
Dryer Evaporation and Heat Load
Water evaporated, product rate and required heat duty from inlet and outlet moisture.
Open tool - M.04
Jet-Pulse Bag Filter Sizing
Required filter area and number of bags from air flow and air-to-cloth ratio.
Open tool - M.05
Pump Power and Motor Selection
Hydraulic power, shaft power and standard IEC motor rating from flow rate and head.
Open tool - M.06
Cyclone Cut Size (Lapple)
Inlet velocity, d50 cut size, particle efficiency and pressure drop estimate for a standard Lapple cyclone.
Open tool - M.07
Torque – Power – Speed and Gearbox
Torque from motor power and speed; gearbox output speed, torque and power from ratio and efficiency.
Open tool - M.08
Silo and Hopper Volume
Total volume, usable volume and capacity in tonnes for a cylindrical silo with a conical hopper.
Open tool