Perform electrical calculations for contractors, designers, and electricians. Calculate load, voltage drop, conduit fill, and panel sizing. Verify compliance with NEC® codes from 1996 to 2023. Store and retrieve past calculations.
by Calculated Industries, Inc.★ 4.9357 ratingsUtilitiesFreeData updated 2026-09-08
Calculate duct sizes quickly with finger sliding for precise measurements. Display equivalent round and rectangular dimensions. Support IP and SI unit conversions. Perform accurate calculations for efficient system design.
Convert units across 8 including length, weight, thermal resistance, and magnetism. Switch between metric and imperial systems. Save frequently used conversions. Export results as text or image.
