Accurate delivery dates. More completed checkouts.
With Estimate API, one call returns a delivery date you can trust, along with the cheapest way to keep it. Backed by millions of real shipments.
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How it works
Step 1
Send the details
Makes a single API call with origin, destination ZIP, and package dimensions.
Step 2
Run the prediction
Get an estimated delivery date at the confidence level you set.
Step 3
Show it where it matters
Display the date on the product page or at checkout as a single date or range.
Put Estimate to work across your business
Win shoppers before they hesitate
Show the delivery date on the product page, before a shopper ever reaches checkout, removing the doubt that stops them from adding to cart.
Close more sales at checkout
Give shoppers the full picture: multiple shipping speeds with real delivery dates alongside price. "Arrives Nov 18 for $8.99 or Arrives Nov 20 for $5.99" is a real choice. "Standard vs. Expedited" is a guess.
Cut costs without cutting corners
Find the cheapest service level that still gets the package there on time. Every carrier selection is informed by a data-backed delivery prediction, not a guess.
Guarantee time-critical deliveries
For perishables, medical supplies, or event-driven goods, confirm deliveries will arrive within required windows before a label is ever purchased.
Delivery uncertainty is costing you more than you think
75%
of shoppers say putting an estimated delivery date on the product page or in the cart positively influences their decision to buy.[1]
93%
of businesses using Estimate say it helps them choose the best service level. [2]
85%
of Shippo merchants had at least one order that could have cost less to ship and arrived just as soon — or sooner. [3]
Sources: [1] thegoods.com, [2] Shippo reporting, 2025, [3] Shippo platform data, merchants shipping 100+ labels a month, July 2026
What makes Estimate different
Built on millions of real shipments
Our predictions are built on real delivery outcomes from millions of packages shipped through Shippo, across carriers, seasonal patterns, U.S. holidays, and carrier performance by route.
Accurate enough to actually trust
Typical estimated delivery dates are not reliable enough to act on. Ours gives you one you can stand behind with ≥90% accuracy, measured against actual delivery outcomes.
Live in hours, not months
A single API endpoint with SDKs in Python, Ruby, JavaScript/Node.js, and PHP. Your engineering team can go from zero to live in a single sprint.
Built for your scale
Estimate is designed for merchants doing 1K to 500K shipments per month, the range where you need real machine learning accuracy but can't justify enterprise overhead.
Always-on reliability
With response times under 200ms and automatic fallback logic, Estimate turns shoppers into buyers and helps you save on shipping every time.
Coming soon
Batch predictions
Up to 1,000 delivery date estimates in a single API call
Multi-warehouse optimization
Send up to 10 fulfillment origins and get the optimal recommendation by cost and delivery promise
Advanced analytics
Accuracy by carrier, service level, and route, with trend data over time
Volume pricing
Discounts starting at 100K calls per month
Frequently asked questions
Who is Estimate for?
How accurate are the predictions?
How are Estimate dates displayed?
What’s the difference between confidence levels?
Which carriers and service levels are supported?
How much could Estimate save me?