Powerful new features, services and plugins for your Shopify store
This app is in beta – it may be incomplete and still be undergoing final testing. It should be used at your own risk.




Developed by Decimal

16 reviews
Price: Custom More info
  • Full control over Shipping Rate calculations
  • Charge buyers for Shipping the way YOU want, using YOUR rules
  • Never lose money on Shipping again!

Put Shopify's "Shipping Settings" on Steroids! Manage your Shipping Rates, Shipping Margins, Shipping Carriers and their Services with Decimal's powerful, advanced Shipping Rate Algorithm.


Please note:

** This app is for use by Shopify stores with complex shipping rules and requirements that cannot be solved by any other app. The system is an algorithm designed for solving some of the most vexing and challenging issues faced by ecommerce businesses related to shipping calculations.

** Decimal is a no-UI, interface-less system! We are an "API first" technology, which means that our entire focus is on the algorithm that accurately calculates rates exactly the way you want. As a fully Managed Service, we set up everything for you in a manner that requires minimum effort on your part. Imagine, no confusing self-setup interfaces and export/import procedures to deal with. And whenever you do need to make changes, they get implemented right away via our unique ticketing-to-continuous-deployment system!


Key Features:

  • 1. FULL CONTROL OVER SHIPPING COST SHOWN TO BUYERS: Ground breaking no-UI, interface-less system puts YOU in command, no matter how complex your shipping rules may be. Tame the shipping rates beast once and for all.
  • 2. ANY CARRIER AND ANY TYPE OF SHIPPING RATE: Use Flat rates, Table based rates, or Real Time Rates from USPS, UPS, FedEx, DHL Express, DHL Ecommerce, DHL Global Mail, IPA, E-Packet, etc. Use Standard rates or Contracted rates. (For USPS, use either Commercial Base, Commercial Plus or your own NSA rates. Works with Endicia, Stamps.com, Express One, etc.)
  • 3. RATE SHOPPING IN REAL TIME: Our Dynamic Rate Shopping Engine seizes lowest cost shipping options from your carriers using YOUR CONTRACTUAL RATES.
  • 4. CUSTOMIZED "FREE SHIPPING" RULES: Handles your 'Free Shipping' thresholds and exceptions. Don't just offer Free shipping...how about Free Ground shipping if order value is $100, but Free Next Day Air shipping if order is above $200! And what about your International buyers; why not incentivise them too with a customized Free shipping offer? We address all these issues.
  • 5. SHIPPING RATES BY PRODUCT, BY SKU, OR BY VENDOR: Allows for product-based or Vendor-based shipping rates and exceptions. Handles the simplest product specific shipping rules as well as the most complex ones. Here are some examples of the issues this app handles. Oh, and more here.
  • 6. "DIMENSIONAL WEIGHT" ISSUES RESOLVED: Automatically triggers and uses dimensional weights whenever relevant. To get a feel for how important this issue has become, check out all these requests, as well as these ones. Our app handles them all.
  • 7. INTERACTIVE CALENDARS AND DATE PICKERS: Want buyers to choose when they want to RECEIVE their packages? Allow your site visitors to pick delivery by a certain date, or even delivery on an exact date / time of their choosing.
  • 8. ARBITRAGE ACROSS MULTIPLE WAREHOUSES, DOMESTIC OR GLOBALLY DISTRIBUTED: Employs Cheapest + Fastest methodologies to decide which warehouse will ship the order, or even whether it's best to split the order between warehouses.
  • 9. RECOGNIZES YOUR WHOLESALE CUSTOMERS: You are free to have a completely different way of charging your Wholesale customers for shipping. Never show retail customers the shipping rate deals that you give your Wholesale customers!
  • 10. DROP-SHIP CAPABLE: Can handle products that you drop ship using multiple vendors and partners.
  • 11. RESIDENTIAL ADDRESS INDICATOR: Dynamically figures out if an address is a Residence, so that any Residential delivery surcharge is automatically included in the rate calculations.
  • 12. DEEP SYNCHRONIZATION WITH SHOPIFY: Syncs with your Shopify Orders in Real Time. No waiting period. Automatically updates itself when you add a new product. No manual file uploads.
  • 13. SENDS "MUST SHIP ON" DATE OR "MUST SHIP BY" DATE TO YOUR SHIPPING & FULFILLMENT SOFTWARE: Simplify your shipping process. Decimal can instruct your order fulfillment / shipping label printing system (e.g. ShipStation, ShippingEasy, etc) as to the exact date that an order needs to be shipped.
  • 14. INTEGRATES WITH YOUR ERP AND WMS SYSTEMS: Decimal can push shipping variables and fields information directly into your ERP or Warehouse Management System as soon as an order is placed in your Shopify store. This facilitates 100% automation of fulfillment, by allowing one-touch batch printing of shipping labels with no human intervention needed.
  • 15. AUTOMATIC SPLITTING INTO MULTIPLE BOXES: Knows if an order won't fit in your largest box, and automatically fits it into multiple boxes to calculate correct shipping charges.
  • 16. REAL-TIME ADDRESS VALIDATION: Automatically Validates every US address and corrects it in order details. Avoid address correction charges, or worse, sending your product into a black hole. Decimal can validate not only USA addresses, but also addresses in more than 200 countries globally.
  • 17. AUTOMATIC FALLBACK RATES: If a Carrier's real time rate server is busy, Shopify will display a "Sorry, no rates available" message, and you are almost guaranteed to lose the sale. Not so with Decimal. We intercept within seconds, and save the order by displaying backup fallback rates to the buyer.
  • 18. BOX PREDICTIONS: Figures out in advance (while the order is still in the shopping cart) which box your warehouse will use when shipping.
  • 19. LOVES YOUR SHIPPING DEPARTMENT: Injects detailed shipping instructions into Shopify's 'order details' pages, so your shipping personnel know exactly how to ship every order, down to the most minute details. (Take a look at the last screenshot in the column on the right.)
  • 20. UNRESTRICTED USAGE: Unlimited rate requests; let your buyers hit our servers as hard as they can, we will never tell you that you've overloaded us.
  • 21. PACKAGE INSURANCE: Don't pay for package insurance out of your own pocket. Adds the exact insurance cost of your high-value items (plus a margin, if you so wish) to the shipping rates charged to buyers.
  • 22. SHOW WHOLESALE CUSTOMERS DIFFERENT SHIPPING COSTS THAN RETAIL CUSTOMERS: Completely control how you want to charge Wholesale customers versus your retail customers. Doesn't stop there; you can have any number of customer categories and still be able to treat each category uniquely.
  • 23. CASH ON DELIVERY (C.O.D.) AS A VIABLE SHIPPING AND PAYMENT OPTION: Let people pay for their order when they RECEIVE it! Your courier service collects the money at the door on your behalf, in exchange for the delivery. Decimal ensures that there are no conflicts between your Shipping Methods and Payment Methods. You can even fine-tune the system for your business rules, so that the C.O.D. option triggers only under certain specified conditions.
  • 24. NEW! POSTMATES SAME DAY DELIVERY AS A SCHEDULED SERVICE: Let your customers choose Postmates as the delivery method, EVEN DURING AFTER-HOURS! With Decimal powering your Shopify checkout, the Postmates driver will show up at the right time the next day, and you will receive an advance alert, giving you enough time to pick and pack the order.

  • Don't see your need listed here? Shoot us an email with your previous month's order volume and we will reply right away.





    We love Decimal. The kinds of shipping-rate calculations it can handle is simply amazing!


    We were shocked that there was no existing app to solve our issues managing shipping from two warehouses.

    We fulfill from both the US and UK, with only a subset of our existing inventory located in the UK. We had been searching for a solution to offer our customers cheapest-cost shipping options for orders placed from each warehouse.

    Decimal's app does real time calculations, allowing us to provide lowest cost shipping rates to our customers, without us having to lose money on shipping.

    Decimal did for us what no other app could, and their consistent service since the launch has been a blessing.


    Decimal is great!


    Decimal takes care of everything, including setup and maintenance. How cool is that!


    Where to begin?! The Decimal team is one of the best I've ever had the pleasure of working with. I don't say that lightly either. I've been in I.T. for 10+ years, and they've exceeded my expectations by leaps and bounds!

    As a merchant who utilizes multiple shipping methods, we rely on shipping companies who not only offer great, competitive rates, but also provide reliable transportation and delivery of our products without damaging them. To that end, we were looking for a Shopify app that could integrate with SpeeDee Delivery, a regional shipper in the Upper Midwest, along with UPS, etc.

    Not only did the Decimal team make that happen, but they went above and beyond by creating a completely customized integration for our storefront. Everything we've asked for from Decimal has been delivered. Even when it seemed something couldn't be done, they found a way to make it work!

    Another extremely attractive solution provided is Decimal's "No-UI" platform. At first, I was a bit apprehensive about this. As the Director of Technology for my company, I'm very hands-on when it comes to the operation of our website and applications; however, in this case I'm happy to step back and let the Decimal team take the wheel! The complexity in which their system operates to provide the EASIEST, and most RELIABLE shipping options to our customers is something Decimal does that would otherwise take too much of my already limited time. I love the fact that this is now one less app I have to manage since Decimal does the hard work for me.

    Decimal's algorithm is second to none in the Shopify Plus arena. If you're looking for a customized shipping application that doesn't seem to be available in the app store, you've just found it. If you think it can't be done, Decimal has done it. If you need to get your shipping options implemented yesterday, Decimal can do it. If you don't believe me, click on my store name below my 5 star rating, find the phone number for our store in our logo, and dial extension 235. You'll hear all of this repeated over the phone from me personally.

    The Decimal shipping app is the most advanced, reliable, and well supported shipping app in the Shopify App Store, hands down.


    What an honest bunch! They analyzed our shipping calculation issue, gave a thoughtful response, and ultimately showed us how to solve our problem without having to use them! Extremely responsive and helpful!


    Finally - a solution to our shipping woes!

    Given the nature of our cabinetry products, it has been difficult to find a program to correctly ascertain the correct shipping costs. Many of our products are large, bulky and are rated dimensionally versus just by weight. The calculated freight has either been too high or too low with both situations causing us to lose. When the freight calculates too high the cart is abandoned and when the freight is calculated too low, it erodes our profit, often making the sale completely unprofitable.

    We have been searching for a solution since our store opened and after several failed attempts with our solutions, we came across Decimal and discovered there is a viable shipping calculator that actually works. The algorithm accurately predicts the exact composition of the boxes that an order would be shipped in. The precision of the calculations allows us to be in full control of our shipping costs. It even assists us by providing packing instructions so our warehouse knows what goes in each box.

    With Decimal powering our checkout pages, we are finally able to charge our buyers just the right amount for shipping costs.

    This review was originally posted in November 2015 but was edited for typos.


    Love, love, love Decimal. Hands down the most powerful shipping rating system on the planet. We are huge fans of their no-ui concept. No ui means no hassles!


    This review is about the people behind Decimal.

    I approached Decimal with a shipping problem that had become a huge bottleneck to my growth. Instead of making a sale, the team told me exactly how to solve my problem without having to use Decimal or any other shipping app, and it worked like magic!

    So refreshing to deal with people of integrity. I wish I could give them 10 stars!


    This app is phenomenal - we couldn't live without Decimal. It's unbelievably flexible and automated. Changes get done without any effort on our part :)

    Save yourself the agony of trying other shipping calculation apps. Decimal is all you need, folks!



    1. NOTE ABOUT PRICING: We typically charge a one time programming fee to incorporate your business rules and shipping rules into our algorithm, and an affordable monthly subscription fee depending on your particular use case.


  • Decimal is a no-UI, interface-less system! We are an "API first" technology, which means that our entire focus is on the algorithm that accurately calculates rates exactly the way you want. We set up everything for you in a manner that requires minimum effort on your part. Imagine, no confusing setup interfaces and export/import procedures to deal with! And whenever you do need to make changes, they get implemented right away via our unique ticketing-to-continuous-deployment system.

  • This app is for use by Shopify stores with complex shipping rules and requirements that cannot be solved by any other app. The system is an algorithm designed for solving some of the most vexing and challenging issues faced by ecommerce businesses related to shipping calculations.
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