which is cheaper for shipping ups or usps depends on several factors, including package size, weight, and destination. USPS is often more affordable for smaller and lighter packages, especially with services like First Class Mail or Priority Mail. However, for heavier and larger shipments, UPS may offer better rates, especially with their Ground services. Businesses and individuals should compare the shipping options and use online calculators from both carriers to determine the most cost-effective choice for their specific needs.