Engineering Systems
Calculators for HVAC and plumbing. Estimate BTU requirements for heating/cooling a room, pipe flow rates, and wire gauge sizing.
Calculate required Airflow (CFM) based on Room Volume and ASHRAE Air Changes Per Hour (ACH) standards....
Estimate tubing length, flow rates, and heat output for underfloor heating. Select flooring types and room...
Calculate electrical box fill per NEC 314.16. Determine conductor volume allowances, check box capacity, and ensure...
Calculate the correct boiler size in kW for your home based on heat loss, room dimensions,...
Calculate air changes per hour (ACH) from room dimensions and airflow rate. Supports CFM, m³/h, L/s...
Calculate correct wire gauge (AWG) for 220V circuits based on NEC standards. Accounts for voltage drop,...
Calculate the exact wire size (AWG/kcmil) for a 100 Amp circuit based on NEC Table 310.16,...
Professional-grade voltage drop calculator for NEC-compliant wire sizing. Features dynamic wire visualization, conduit fill estimation, and...
Estimate annual solar energy generation based on roof area, location latitude, and panel efficiency. Includes tilt...
Estimate solar array size and battery capacity based on location (Peak Sun Hours) and energy usage....
Determine the required septic tank volume and dimensions based on bedrooms or daily wastewater flow. Compliant...
Calculate required airflow (CFM) and Air Changes per Hour (ACH) for HVAC compliance. Includes database of...
Calculate fire resistance (R30, R60, R120) for steel and concrete elements. Supports Eurocode/ASTM standards, intumescent coating...
Engineering-grade calculator for pipe exterior and interior surface areas. Includes ANSI Schedule 40/80 database and cross-section...
Calculate Earth Fault Loop Impedance (Zs) for electrical circuits. Checks compliance with breaker types (B, C,...
Calculate correct circuit breaker amperage for single and 3-phase loads. Applies NEC 80% safety rules and...
Calculate the perfect AC size for any room. considers area, ceiling height, insulation, sunlight, and occupancy...