Heat Pump Running Cost Calculator
Wired White v1 Estimate heat-pump electricity from climate and flow temperature or a supplied JAZ. Compare gas, oil and kerosene costs with dated German tariffs and carbon-price scenarios.
Engineering calcs
Calculators by WiredWhite engineers: inputs, formulas you can read, results, charts and drawings, checked against reference cases. They run in your browser.
Wired White v1 
Tolerance Stack-Up Calculator: Worst Case, RSS & Monte Carlo
Wired White v1 Analyze a signed 1D dimension chain with worst-case limits, RSS and seeded Monte Carlo. Compare assembly yield and identify the tolerances that dominate variation.
Bolt Torque and Preload Calculator
Wired White v1 Calculate bolt preload from torque or torque from target clamp force. Compare thread and bearing friction, assembly yield utilisation, friction scatter and tapped-hole stripping.
PID Controller Tuning Simulator
Wired White v1 Tune a filtered PID controller on process and DC motor models. Compare step response, actuator saturation, Bode margins and a root locus with SIMC or Ziegler–Nichols settings.
EV Range and Energy Consumption Calculator
Wired White v1 Estimate EV range and battery consumption from speed, temperature, elevation and vehicle data. Compare steady driving with EPA city and highway cycles.
LLM VRAM and Throughput Calculator
Wired White v1 Find which local LLMs fit your GPU, Mac or CPU—or which hardware fits a model. Compare KV memory, prefill, decode, runtime support and measured speed references.
PCB Trace Width Calculator — IPC-2221 & IPC-2152
Wired White v1 Size copper PCB traces from current, temperature rise, copper weight and layer. Compare the IPC-2221 legacy formula with the named SMPS.us IPC-2152 baseline fit.
Inverter Loss and Heatsink Calculator
Wired White v1 Estimate IGBT inverter losses and heatsink requirements including base spreading. Compare footprint and thickness effects on resistance and hot-spot temperature.
Flyback Converter Design Calculator
Wired White v1 Size or check a flyback transformer in DCM or CCM. Calculate inductance, turns ratio, peak and RMS currents, device voltage stress, winding estimates and an RCD clamp.
Power Inductor Design Calculator
Wired White v1 Size a gapped ferrite inductor and check peak flux, copper loss and iGSE core loss. Compare air-gap and ripple-duty tradeoffs with published ferrite baselines.
Transformer Design Calculator
Wired White v1 Size mains and ferrite bridge transformers with turns per volt, peak flux, window fill, copper and core losses, and temperature rise. Includes traceable loss models and winding checks.
Battery Pack Configuration Calculator
Wired White v1 Size series and parallel battery packs from cell datasheet values. Calculate voltage, capacity, energy, mass, volume, current limits, heating and optional two-RC pulse sag.
Battery Runtime and Backup Power Calculator
Wired White v1 Calculate battery and UPS runtime for fans, lights, TVs or boilers. Compare editable 150/200 Ah inverter examples and size battery counts from runtime, voltage and C-rate limits.
Beam Calculator: Deflection, Shear and Moment
Wired White v1 Calculate beam reactions, shear and moment diagrams, deflection and bending stress for common supports, combined loads, and steel or timber sections.
PV and Home Battery Payback Calculator
Wired White v1 Compare PV and battery payback with hourly energy balances, replacement costs and dated DE, NL, FR, PL, India, Pakistan and Brazil presets. Regional currencies and settlement rules stay explicit.
Cable Size and Voltage Drop Calculator
Wired White v1 Size a cable or find its maximum current and kW at 1%, 3% and 5% voltage drop. Compare computed heating, device coordination and fault-loop limits with explicit IEC and NEC assumptions.
Heat Load and Heat Pump Sizing Calculator
Wired White v1 Estimate room-by-room heat loss or use gas bills and degree days. Compare heat-pump capacity, bivalence and water flow with explicit assumptions.
Tesla Roadster Flight Simulator
Wired White v1 Explore hypothetical Tesla Roadster cold-gas hops, launch and braking, with tank cooling, gas use, claim checks and a physical, fixed-scale replay.
My Engineering IQ Test — 16-Question Engineering Quiz
Wired White v1 Take a 16-question engineering quiz covering electrical, mechanical, control and maths. Get category scores, worked formulas and a result you can share.
BLDC Motor Design Calculator: Winding, Kv, Kt and Losses
Wired White v1 Size a star-connected BLDC winding, convert Kv and Kt, and check torque, voltage headroom, copper losses and slot fill. Includes a speed envelope and six-step commutation animation.
DC Motor Design Tool: Speed, Torque and Efficiency
Wired White v1 Calculate brushed DC motor speed, torque, current and efficiency from datasheet or winding data. Explore operating curves, voltage sizing, field estimates and commutation.
Axial Flux Motor Design Tool
Wired White v1 Size a coreless axial flux PM motor with radial-slice torque and EMF calculations. Compare winding layouts, copper losses, voltage demand and estimated efficiency.
Induction Motor Design & Equivalent Circuit Calculator
Wired White v1 Size air-gap, tooth and yoke magnetic loading; calculate motor torque, current, efficiency and losses. Enter circuit parameters or estimate them from catalogue data.
IPMSM Design Tool: Ld, Lq, MTPA and Field Weakening
Wired White v1 Estimate IPMSM flux linkage and saturating dq inductances, then explore MTPA, field weakening and voltage-limited torque with Prius reference checks.
