Free Shipping Calculators
Compare live rates and estimate costs across UPS, FedEx, USPS, and DHL. DIM weight, freight class, insurance, landed cost, and more. No signup required.
Carrier rates updated daily from live APIs - always current, never stale.
🚚Carrier Tools
Compare rates and estimate costs across UPS, FedEx, USPS, and DHL.
Carrier Comparison Calculator
Compare UPS, FedEx, and USPS rates side by side. See the cheapest option at every speed tier for your shipment.
UPS Cost Calculator
Estimate UPS shipping rates by weight, dimensions, zone, and service type.
FedEx Cost Calculator
Estimate FedEx shipping rates by weight, dimensions, zone, and service level.
USPS Postage Calculator
Estimate USPS shipping costs by weight, size, and service level for domestic packages.
DHL Cost Calculator
Estimate DHL Express international shipping rates by weight and destination zone.
Fuel Surcharge Calculator
Calculate UPS and FedEx fuel surcharges on any base rate. Current rates by carrier and service.
Shipping Zone Calculator
Look up the shipping zone between any two ZIP codes for UPS, FedEx, and USPS.
Delivery Time Calculator
Estimate transit days by carrier, service level, and shipping zone.
USPS Ground Advantage Calculator
Estimate rates for USPS Ground Advantage - the service replacing First Class Package.
UPS SurePost vs Ground Calculator
Compare UPS SurePost vs Ground rates. Find out when the hybrid last-mile service saves money.
Address Correction Fee Calculator
Estimate the cost of bad addresses at scale. UPS and FedEx charge around $17-18 per correction.
Heavy / Oversized Surcharge Calculator
Calculate UPS and FedEx additional handling fees for large or heavy packages.
Residential vs Commercial Rate Calculator
See the cost difference between shipping B2B vs B2C and calculate the residential surcharge impact.
Flat Rate Box Comparison
Find the cheapest USPS flat rate box for a given item weight and destination.
📦Packaging & Dimensions
Optimize package dimensions, calculate DIM weight, and avoid oversized fees.
DIM Weight Calculator
Calculate dimensional weight for UPS, FedEx, and USPS packages. See if DIM or actual weight applies.
Volumetric Weight Calculator
Calculate volumetric weight using IATA, UPS/FedEx, USPS, and DHL divisors.
Box Size Calculator
Find the optimal box size for your product to minimize DIM weight charges and wasted space.
Package Girth Calculator
Calculate package girth and check against USPS, UPS, and FedEx maximum size limits.
Poly Mailer vs Box Calculator
Compare poly mailer vs box cost including DIM weight impact. Find out when a mailer saves money.
Pallet Calculator
Calculate how many boxes fit on a standard pallet by layer and total, with weight limits.
💵Cost & Margins
Understand the true cost of shipping and its impact on your profit margins.
Shipping Cost Per Unit Calculator
Calculate shipping cost per unit, margin impact, and free shipping threshold profitability.
International Shipping Calculator
Estimate international rates, volumetric weight, import duties, and taxes by destination.
Shipping Cost Calculator
Estimate total shipping cost by carrier, weight, and zone for any domestic shipment.
Free Shipping Threshold Calculator
Find the order value at which offering free shipping is profitable given your margins.
🛡️Insurance & Risk
Protect your shipments and understand the true cost of loss and coverage.
Shipping Insurance Calculator
Estimate annual shipping losses, insurance costs, and expected savings based on your order volume.
Declared Value Calculator
Estimate carrier liability fees for declaring full shipment value with UPS, FedEx, or USPS.
Returns Shipping Calculator
Estimate monthly return label costs and calculate what to build into your pricing.
Shipping Loss Risk Calculator
Estimate expected loss rate, annual losses, and net savings with insurance based on carrier and volume.
Lost Package Probability Calculator
Estimate the probability of package loss by carrier, route, and package value.
🚛Freight & Logistics
LTL freight, landed cost, duties, and logistics planning tools.
Freight Class Calculator
Determine NMFC freight class from density. Essential for accurate LTL freight quotes.
Pallet / LTL Cost Estimator
Estimate LTL freight rates by pallet dimensions, weight, and freight class.
LTL vs FTL Break-Even Calculator
Find out at what pallet count booking a full truckload becomes cheaper than LTL.
De Minimis Threshold Calculator
Look up the duty-free import threshold by destination country for your shipments.
Landed Cost Calculator
Calculate true delivered cost including product price, shipping, duties, and VAT.
Shipping Carbon Footprint Calculator
Estimate CO2 emissions per shipment by carrier and distance using EPA SmartWay data.
About These Shipping Calculators
ShippingCalculators.net provides free tools for anyone who ships packages, from individual sellers to high-volume e-commerce merchants. Our calculators cover carrier rates, dimensional weight, packaging optimization, freight classification, shipping insurance, landed cost, and more. Live rate data is pulled daily from UPS, FedEx, USPS, and DHL APIs so estimates stay current.
Dimensional weight is one of the most important concepts in small-parcel shipping. UPS and FedEx charge the greater of actual weight or DIM weight on every package. A lightweight product in a large box will often be billed at DIM weight, which can be two or three times the actual weight. The DIM weight calculator lets you check this before you choose a box or get a shipping quote.
For businesses shipping frequently, small optimizations compound quickly. Choosing the right box size, picking the correct service level, comparing carriers, and understanding surcharges can reduce your average shipping cost by 10 to 20% without changing your carrier. These calculators are designed to make those comparisons fast and accurate.
All calculations are for estimation purposes. Actual carrier rates depend on your negotiated discounts, surcharges, and current pricing. Always verify final costs with your carrier or shipping platform.
From the Blog
Frequently Asked Questions
What is a DIM weight calculator?
A DIM weight calculator computes the dimensional (volumetric) weight of a package by dividing its volume (length x width x height) by a carrier-specific divisor. UPS and FedEx use 139; USPS uses 166. You are billed for whichever is greater - actual weight or DIM weight.
Use the calculator →What is freight class and how is it calculated?
Freight class is an NMFC rating from 50 to 500 used by LTL carriers to price shipments. It is primarily based on density (weight per cubic foot). Higher density means a lower class number and lower shipping rates.
Use the calculator →Do I need shipping insurance?
Carriers include limited default liability - typically $100. If your shipments are worth more than $100, you should consider carrier declared value coverage or third-party shipping insurance. Third-party insurers charge around $0.55 per $100, compared to $1.00-$2.45 per $100 through the carrier.
Use the calculator →What is the difference between declared value and shipping insurance?
Declared value is not insurance - it is a carrier liability cap. True shipping insurance from third-party providers offers broader coverage, faster claims processing, and often covers scenarios carriers exclude.
Use the calculator →How do I calculate volumetric weight for international shipping?
For international air freight, use the IATA standard: volumetric weight (kg) = (length cm x width cm x height cm) / 6000. You are charged whichever is greater - actual weight or volumetric weight.
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