Introduction
This free shipping calculator helps you find the cheapest and fastest way to send a package. Just enter your ZIP codes, package size, and weight. The tool compares real-time rates from USPS, UPS, FedEx, and DHL side by side so you can pick the best option for your budget and delivery speed.
You can use it for domestic shipping within the United States or international shipping to countries around the world. The calculator shows discounted prices, estimated delivery dates, tracking quality, and pickup options for each carrier. It also calculates dimensional weight, surcharges, and insurance costs so there are no surprises when you ship.
Whether you are sending a small envelope or a heavy box, this shipping cost calculator gives you a clear breakdown of every charge. Use Quick Quote mode for a fast estimate or switch to Full Quote mode to add multiple parcels and customs details for international shipments.
How to Use Our Shipping Calculator
Enter your package details below to compare shipping rates from USPS, UPS, FedEx, and DHL. You will get a list of carrier options sorted by price and speed, plus a cost-vs-speed chart and a step-by-step cost breakdown.
Measurement Units: Pick Imperial (pounds and inches) or Metric (kilograms and centimeters). The calculator will convert your numbers if you switch.
Shipment Direction: Choose Domestic if you are shipping within the United States. Choose International if you are shipping to another country.
Quote Mode: Use Quick Quote for a fast estimate with fewer fields. Use Full Quote to add extra parcels and see more options.
Ship From & Ship To ZIP Codes: Type the 5-digit ZIP code where your package starts and the 5-digit ZIP code where it is going. For international shipments, select the origin and destination countries, then enter the city and postal code for each.
Ship Date: Pick the date you plan to drop off or send your package.
Drop-Off Time: Select the time you will hand your package to the carrier. Late drop-offs may add an extra transit day. You can use our Business Days Calculator to count how many working days fall between your ship date and the estimated arrival.
Package Type: Click the box that matches your shipment. Choose Postcard, Flat Rate Envelope, Flat Rate Box, or Custom Shape & Size. If you pick a flat rate option, select the specific size from the dropdown that appears. For simple letter mail, our Postage Calculator can help you find the right stamp cost.
Carrier Package Presets: If you chose Custom Shape & Size, click a preset like Small Box or Padded Envelope to auto-fill the dimensions. You can also use the Quick Size Select buttons for common box sizes.
Dimensions: Enter the length, width, and height of your package. The calculator uses these to find the dimensional weight, which carriers charge when a box is large but light. If you need to figure out the interior space of your box first, try our Volume Calculator.
Weight: Enter the actual weight of your package. The calculator compares this to the dimensional weight and bills whichever is higher.
Shipment Protection: Choose an insurance level to protect your package. Options range from None to Full Value Protection based on your declared value.
Declared Value: Enter the dollar amount your package contents are worth. Use the purchase price for new items and the resale price for used items.
Parcel Contents Description: Describe what is inside your package. Be specific — write "cotton t-shirts" instead of vague words like "stuff" or "gifts."
Refine Search: Click this to pick a content category and subcategory for your items, such as Clothing > Shirts or Electronics > Laptops.
Special Handling: Check any boxes that apply to your shipment, such as Hazardous Materials or Live Animals. Check Ground Transportation Only if your package cannot travel by air.
Customs Manifest (International Only): For international shipments, add each item in your package with its description, quantity, value, weight, brand, HS tariff number, and country of origin. Click Add / Update Item to save each entry to the manifest table. If you are shipping palletized goods, our Freight Class Calculator can help determine the correct classification.
Additional Parcels (Full Quote Only): In Full Quote mode, click Add Another Parcel to ship more than one box in the same quote. You can add up to 10 parcels total. Use our CBM Calculator to figure out the total cubic volume of a multi-parcel shipment.
Calculate: Click the Calculate button to see your shipping rates. Click Reset to clear all fields and start over.
How Shipping Costs Work
When you send a package, the price you pay depends on a few key things: how heavy your box is, how big it is, where it's going, and how fast you want it to get there. Carriers like USPS, UPS, FedEx, and DHL each set their own rates based on these factors. This shipping calculator compares all of them at once so you can find the cheapest or fastest option for your needs.
Actual Weight vs. Dimensional Weight
Carriers charge you based on whichever is greater: the actual weight of your package or its dimensional weight. Dimensional weight is found by multiplying the length, width, and height of your box and then dividing by 139 (for inches). A large but light box can cost more than you expect because it takes up a lot of space in the truck or plane. This is called billable weight, and it is the number carriers use to set your price. Our Volumetric Weight Calculator walks you through this calculation in detail for any carrier.
Shipping Zones
The farther your package travels, the more it costs. Carriers split the country into numbered zones based on the distance between the origin ZIP code and the destination ZIP code. Zone 1 is local. Zone 8 is coast to coast. A higher zone means a higher price. For international shipments, zones are based on the destination country. You can use our Lead Time Calculator to estimate how long the full order-to-delivery cycle takes, including processing and transit across zones.
Flat Rate vs. Custom Packages
Some carriers offer flat rate envelopes and boxes. With flat rate, you pay one set price no matter how heavy the contents are, as long as they fit inside the box and stay under the weight limit. This can save money on heavy but small items. If your package does not fit a flat rate option, you will use custom dimensions and the carrier will price it by billable weight and zone. For quick letter and postcard pricing, check out our Postage Calculator.
Surcharges and Extra Fees
Packages that are very large, very heavy, or an odd shape may trigger additional handling surcharges. Common triggers include a longest side over 48 inches, a weight over 70 pounds, or a combined length plus girth over 130 inches. Hazardous materials, live animals, and cremated remains also carry special handling fees. Shipping protection (insurance) adds a small cost based on the declared value of your contents. If you are selling online, remember to factor shipping into your total costs alongside marketplace fees from platforms like eBay or Etsy.
International Shipping and Customs
Sending a package to another country requires a customs manifest. This is a list of every item in the box, including a description, quantity, value, and an HS tariff code. Customs officials use this form to decide if any duties or taxes apply. Accurate descriptions and correct HS codes help your package clear customs faster and avoid delays or extra charges at the border. For commercial freight that ships on pallets, use our Freight Class Calculator to determine the right NMFC class, and our CBM Calculator to measure the total cubic volume of your shipment. If you are relocating household goods internationally rather than shipping individual packages, our Moving Cost Calculator can help you estimate the full cost of a move.