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USPS Postage Calculator
postcalc.usps.com
Retail Postage Price Calculator
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USPS
usps.com › ship › mail-shipping-services.htm
Mail & Shipping Services | USPS
That’s larger than 1 cubic foot (1,728 cubic inches), so you must divide by 166 to find its DIM weight: 1,920 divided by 166 equals 11.56, which rounds up to 12 lbs. The DIM weight of 12 lbs is greater than the actual package weight of 5 lbs.
Discussions

Sweet spot of box size and weight to maximise products sent but minimise cost at USPS?
Your shipping to amazon for FBA? And not using the UPS partner rates? Those can’t be beat no matter what deal you got with USPS. We can send in 40lb boxes that are 20x20x20 for under $12 many times. More on reddit.com
🌐 r/ecommerce
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8
October 9, 2022
What is an easy way or trick to estimate usps domestic shipping costs by weight?
16 oz or less can ship First Class Package ($2-4) 16 oz+ can ship via Priority Mail ($8-10) And if the item fits, you can use Flat Rate Priority Envelopes ($7.33) More on reddit.com
🌐 r/eBaySellerAdvice
12
3
November 13, 2018
UPS vs USPS extensive comparison for under 20 lbs
This is great work. I can confirm a lot of this is correct. I also learned a lot. Thank you. More on reddit.com
🌐 r/shopify
13
15
September 24, 2023
[GUIDE] A USPS Shipping Guide
Also, in addition to 8x4x4 boxes, you can get a 7x5x4 box into a Padded FR Envelope as well, maxing out the volume at 140 cubic inches (8x4x4 is 128 cubic inches). We use this very often @ Maggard. These 7x5x4 and regional A's are the two shipping secret weapons that are available to basically everyone. More on reddit.com
🌐 r/Shave_Bazaar
15
50
March 12, 2019
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PostScan Mail
postscanmail.com › home › blog › usps shipping rates by weight chart 2025
USPS Shipping Rates by Weight Chart [2025 Full Guide] - PostScan Mail
August 28, 2025 - Weight Charts are charts produced by shipping companies like USPS and give customers an overview of how much the package will cost when you ship it. In addition, you can check the weight of your package and its destination zone, which will give ...
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EasyPost
easypost.com › home › usps shipping rate charts
USPS Shipping Rate Charts - EasyPost
April 6, 2026 - Growing merchants deserve smarter shipping. Better rates. Less hassle. Join the Nexus waitlist. EasyPost has a special agreement with USPS that allows us to give you discounts below Commercial pricing for certain shipments. This applies to Priority Mail and USPS Ground Advantage mail classes and for most shipments 20 pounds or less, flat rate products, and cubic pricing tiers.
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ParcelPath
parcelpath.com › home › carrier services › usps shipping rates 2026: rate chart by weight + service tiers
USPS Shipping Rates 2026: Rate Chart By Weight + Service Tiers
3 weeks ago - The 2026 USPS shipping rates chart by weight (retail, Zones 1-4) starts at USD 4.45 for 4-ounce Ground Advantage, climbs to USD 5.50 for 1 lb, USD 11.45 for 10 lb, USD 19.95 for 20 lb, and tops out at USD 63.05 for the 70-pound maximum.
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US Global Mail
usglobalmail.com › blog › usps-shipping-rates-by-weight-chart
USPS Shipping Rates By Weight Chart (2025 update)
October 14, 2025 - A chart with the shipping rates USPS will charge, depending on the weight of your package & zone your package is being shipped to.
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Pitney Bowes
pitneybowes.com › blog › usps 2025 shipping rates increase & charts
USPS 2025 Shipping Rates Increase & Charts | Pitney Bowes
January 30, 2026 - The chart below outlines updated July 2025 retail rates by weight and USPS zone. If available, PitneyShip® discounted rates may also be included to show potential savings. USPS Ground Advantage – Retail Rates by Weight (July 2025) For parcels above 20 lb and Oversized packages, refer to the USPS 2025 Commercial Plus rate tables · If you're using PitneyShip®, you'll have access to discounted commercial rates that can further reduce your shipping spend.
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USPS
usps.com › business › prices.htm
Postage Rates & Prices | USPS
You can check out the starting prices for many of our domestic and international mailing and shipping options below or visit the Postal Explorer® website to review the full USPS® Price List.
Find elsewhere
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CoolParcel
coolparcel.com › courier › usps › shipping-rates-by-weight-chart
USPS Shipping Rates by Weight Chart: Need to Know for 2023
USPS provides a comprehensive shipping rates chart that details the costs for various weight ranges. What factors influence USPS shipping rates apart from weight? Answer: While weight is a significant factor, USPS shipping rates can also be affected by additional factors such as package dimensions, destination, and shipping method.
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USPS Postage Calculator
postcalc.usps.com › Calculator › ShapeAndSize
Retail Postage Price Calculator Weight and Shape/Size - USPS
International Packages except First-Class Package International Service Length is the longest side of the parcel. Girth is the measurement around the thickest part of the parcel. Length plus girth cannot exceed 108 inches. First-Class Package International Service Size—Other than Rolls Maximum ...
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Shippo
goshippo.com › shipping-calculator
Shipping Calculator | Compare Rates: USPS, UPS & FedEx | Shippo
Compare shipping rates across USPS, UPS, FedEx, DHL, and 40+ carriers. Enter your package details and instantly see the best rates side by side.
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Ordoro
ordoro.com › usps-shipping-rates
USPS Shipping Rates - Ordoro
Long story short, it’s a way of figuring out how much space a package will take up, rather than just how much it weighs. Here’s how they go about determining it. Dimensional Weight = (Length x Width x Height) / 166 · You might recognize the first part of that equation from middle school ...
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Infinity Calculator
infinitycalculator.com › home › logistics › usps shipping calculator
USPS Shipping Calculator - Zones, Flat Rate, DIM Weight, Intl Rates
3 weeks ago - Estimate USPS domestic and international shipping costs by ZIP code zone, package dimensions, and weight. Compare Priority Mail, Ground Advantage, and Flat Rate options with delivery dates.
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ShipRush
shiprush.com › home › shipping rate calculator
Shipping Rate Calculator - Descartes ShipRush
April 1, 2025 - Select your packaging type and enter the dimensions and weight based on your measurements ... Descartes ShipRush uses the information you entered to find the correct zone and USPS shipping rates based on USPS partner rate cards.
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Shippo
goshippo.com › usps-shipping-calculator
USPS Shipping Calculator | Estimate USPS Rates Instantly | Shippo
Enter your package details, destination, and see the rates of popular USPS services like Priority Mail or Priority Mail Express. No signup required—get real-time USPS rates to make informed shipping decisions right now.Get started ... Input your package weight and dimensions.
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ShipStation
shipstation.com › home › usps shipping calculator
USPS Shipping Calculator - ShipStation
March 24, 2026 - Enter your destination country, package weight, and dimensions into a USPS International Shipping Calculator or ShipStation. Rates depend on the destination, size, service (First-Class Intl, Priority Mail Intl, etc.), and whether customs forms or HS codes are required. Use ShipStation’s calculator to get commercial pricing with no volume minimums. The platform simplifies calculation by syncing your orders and applying the best USPS rate automatically — especially useful when shipping across multiple zones or marketplaces.
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Stamps.com
stamps.com › home › usps › current postage rates, us postage stamp prices
Current USPS® Postage Rates & Discount Prices for 2025
April 26, 2026 - Whether you’re shipping local, nationwide, or overseas, find the cheapest and fastest shipping in seconds. Compare Rates · USPS rates are determined by a combination of weight, mail class, and shape.