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PCB design, op-amps, batteries, drones, networking, and digital-signal math.
Tap any card to open its calculator page.
Build Unix file permission codes with checkboxes and see symbolic notation
Estimate material, electricity, and overhead costs for a 3D print job
Calculate theoretical speedup using Amdahl's Law for parallel computing
Convert battery capacity from mAh to watt-hours and kilowatt-hours
Estimate how long a battery will last at a given current draw
Calculate the battery capacity needed for a given power and runtime
Estimate drone flight time from battery capacity and hover current
Calculate motor RPM and estimated thrust from KV rating and voltage
Calculate duty cycle percentage, frequency, and period from on/off times
Calculate effective DPI from mouse DPI and in-game sensitivity
Calculate Ground Sample Distance for drone or aerial photography
Calculate pixels per inch and total megapixels for any display
Calculate true RAM latency in nanoseconds from CAS latency and frequency
Calculate signal propagation delay for a cable or PCB trace
Calculate maximum current capacity of a PCB trace using IPC-2221
Calculate the DC resistance of a copper PCB trace
Calculate required PCB trace width for a given current using IPC-2221
Calculate characteristic impedance of a microstrip PCB trace
Calculate password entropy bits and estimated crack time
Calculate gain and gain in dB for inverting and non-inverting op-amp configurations
Calculate output voltage for an LM317 adjustable voltage regulator
Calculate L-network component values for RF impedance matching
Calculate Total Harmonic Distortion from fundamental and harmonic voltages
Calculate network address, broadcast, and host range from CIDR notation
Calculate characteristic impedance of a coaxial cable
Estimate near-end and far-end crosstalk between PCB traces
Visualize IEEE 754 single and double precision floating point representation
Calculate the Hamming distance between two binary strings
Encode a binary message with Hamming error-correcting code
Evaluate AND, OR, NOT, NAND, NOR, XOR, XNOR gates with a truth table
Convert between dBm, dBW, watts, and milliwatts
Calculate usable storage, fault tolerance, and speed for RAID configurations
Calculate resistor values for a pi-network RF attenuator
Calculate even and odd parity bits for a binary string
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