{"id":4,"count":132,"description":"Use these engineering calculators to solve electrical, mechanical, civil, and ventilation problems. Circuit designers can estimate trace impedance with the Microstrip PCB Impedance calculator, select an LED Series Resistor, or work out Real and Reactive Power. Mechanical engineers and students can explore spring behavior with the Spring Resonant Frequency calculator and assess loading with the Cantilever Beam Stiffness calculator.For construction planning, calculate material quantities with Concrete Volume, Concrete Mix Ratio, and Number of Paving Stones. Ventilation Airflow Requirement and Pipeline Flow Rate help engineers and installers plan building services and piping systems.","link":"https:\/\/wpcalc.com\/en\/engineering\/","name":"Engineering","slug":"engineering","taxonomy":"category","parent":0,"meta":[],"acf":[],"_links":{"self":[{"href":"https:\/\/wpcalc.com\/en\/wp-json\/wp\/v2\/categories\/4","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/wpcalc.com\/en\/wp-json\/wp\/v2\/categories"}],"about":[{"href":"https:\/\/wpcalc.com\/en\/wp-json\/wp\/v2\/taxonomies\/category"}],"wp:post_type":[{"href":"https:\/\/wpcalc.com\/en\/wp-json\/wp\/v2\/posts?categories=4"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}