Accurate antenna and RF calculators with formulas and examples. Calculate EIRP, FSPL, link budget, Fresnel zones, and more for your wireless projects.
Essential RF engineering calculators for your wireless design projects
Browse calculators by category to find the right tool for your needs
EIRP, ERP, link budget, and received power calculations for wireless system design.
Antenna gain, beamwidth, radiation patterns, and aperture calculations.
FSPL, Fresnel zones, path loss models, and coverage predictions.
VSWR, return loss, impedance matching, and Smith chart calculations.
Our calculators are built on fundamental RF engineering principles. Each tool includes the underlying formulas and explanations to help you understand the calculations and apply them correctly in your designs.
Understand antenna gain and effective radiated power calculations
Learn how signals attenuate over distance and through obstacles
Master impedance matching and voltage standing wave ratio
Trusted by engineers, students, and hobbyists worldwide
Design and analyze wireless systems
Learn antenna and RF concepts
Plan coverage and capacity
Optimize antenna performance
Design low-power wireless links