
Wired White
AdminCalcs
Metal Detector Coil Calculator and PI Pulse Timing
Size a pulse-induction coil, estimate resonance and damping, compare recovery with target decay, and explore calibrated air range versus coil diameter.
Welding Inverter Design Calculator
Size a two-switch forward welding inverter: transformer turns and copper, output choke, switch currents and losses, mains demand, and the arc load characteristic.
Steinmetz Capacitor: Three-Phase Motor on Single Phase
Size a Steinmetz run capacitor at a chosen load using a motor circuit model. Check starting capacitance, capacitor voltage, winding currents and available power.
Earth Electrode Resistance Calculator
Estimate rod, plate, strip and ring earth resistance from soil resistivity or a Wenner test. Include rod screening, seasonal variation and a clearly bounded TT RCD check.
Rainwater Harvesting Calculator & Water Tank Size
Size rainwater and outage storage with a daily water balance. Compare tank capacity, demand coverage, overflow and refill time, and animate a full year of tank levels.
Solar Water Pump Size Calculator & Borehole Sizing
Size a solar water pump from daily demand, borehole drawdown and pipe losses. Estimate PV kWp, pump horsepower, hourly flow and intake submergence.
AC Size Calculator: Cooling Load for Hot Climates
Estimate room cooling load and AC size at 40–50 °C, including roof exposure, solar gain, humidity and high-ambient capacity loss. Compare running-cost scenarios by set temperature.
PV String Sizing Calculator for Cold Mornings
Check cold-morning PV string voltage against the inverter’s hard DC limit, hot MPPT voltage, current and DC/AC ratio. Animate a temperature-dependent I–V curve.
Room Ventilation Calculator: CO₂, Humidity and Airing Time
Estimate window airing time from CO₂ and moisture balances. Compare cold-surface humidity, sensible heat loss and mechanical heat recovery, with animated room-air curves.
Solar Water Heater Sizing Calculator
Size solar hot water collectors and storage from daily demand and monthly climate. Compare winter solar coverage, backup heat, certified efficiency curves and stagnation.
Instant Water Heater and Electric Shower Calculator
Size instant hot-water capacity from flow and winter inlet temperature. Compare electric current, cable voltage drop, breaker inputs, Japanese go ratings and shower cost.
Hot Water Cylinder Size and Heat Pump Water Heater Savings
Size a hot water cylinder from mixed-water demand, estimate heat-up time and standby loss, and compare heat-pump electricity, timer capacity and payback.
Heat Pump Noise Calculator at the Neighbour
Estimate heat pump noise at a neighbour's window from sound power, placement, distance and barriers. Includes dated German night and England MCS presets.
Hydraulic Balancing Calculator
Calculate radiator design flows, Darcy pipe losses, required valve kv and pump head for up to six parallel circuits. Compare entered kv values and watch the flow split.
Underfloor Heating Output & Loop Designer
Estimate water underfloor heating output from pipe spacing, screed, covering and water temperatures. Check surface limits, pipe lengths, loop flow and pressure drop.
Radiator Output at Low Flow Temperature
Check radiator output at heat-pump temperatures, find each room’s minimum flow, size replacements and explore a heating curve and cost-per-degree scenario.
Four-Bar Linkage Calculator and Coupler Curve Analyzer
Analyze Grashof type, link positions, velocities, accelerations, and transmission angle. Animate either assembly branch and trace a coupler curve.
Model Rocket Flight Simulator & Stability Calculator
Simulate model rocket altitude, ejection timing and parachute recovery. Check Barrowman stability and animate a flight using your own thrust points or idealized motor profiles.
Compression Spring Calculator & Designer
Design a round-wire compression spring: calculate rate, solid height, Wahl stress, buckling, Goodman fatigue and surge frequency, with animated compression.
LoRa Airtime, Duty Cycle & Battery Cost: Spreading Factor Planner
Compare SF7–SF12 airtime, bit rate, link gain, hourly duty budget and battery cost per message. Enter your regional limit and device currents; optionally estimate ALOHA overlap.
IoT Battery Life Calculator: Sleep, Wake, Transmit & Self-Discharge
Estimate sensor node battery life from sleep, wake, sensing, connection and transmit states. Include board leakage, regulator current, capacity derating and annual self-discharge.
LoRa & Meshtastic Link Budget and Fresnel Zone Calculator
Estimate LoRa link margin, Fresnel clearance and ridge diffraction. Compare free space with Hata models and check dated regional power and airtime presets.
Projectile Motion and Free Fall Calculator with Air Drag
Calculate projectile motion and free fall with air resistance, wind and altitude. Compare the vacuum path, find the best launch angle, and estimate terminal velocity.
CNC Router Feeds and Speeds Calculator with Tool Deflection
Calculate chip load, radial chip thinning, feed rate, spindle power and static end mill deflection. Explore cutter engagement and the effect of stickout.
