is it cheaper to mail packages ups or usps

is it cheaper to mail packages ups or usps depends on the size, weight, and destination of the package. USPS is often cheaper for smaller, lightweight packages under 2 pounds, especially when using First-Class or Priority Mail Flat Rate boxes. UPS may offer better rates for heavier parcels, business accounts, or when using negotiated rates. Comparing both services using online tools or calculators ensures cost-efficiency based on specific shipping needs.