Pick and pack time estimate
Know how long an order takes before you promise a ship-by time: 12 items at 0.75 minutes each take 9 minutes to pick, and 3 minutes of packing bring the total to 12 minutes. Free in your browser.
- Free
- Runs in your browser
- No sign-up
- Your data stays on your device
Run — free
Worked example
- Item count
- 12
- Pick time per item
- 0.75
- Packing time
- 3
- Total pick time
- 9
- Total time
- 12
Warehouse and e-commerce teams need a transparent estimate of how long it takes to fulfill an order before promising ship-by times, staffing a shift, or sizing a same-day cutoff. This pick and pack time estimator multiplies the number of items on the order by your average pick time per item, then adds a fixed packing time for cartons, inserts, and sealing. The result is a single total fulfillment duration you can pin in WMS dashboards, SLA calculators, and customer-facing ETAs. Negative item counts are rejected as invalid input so form glitches never invent a backward clock.
How pick and pack time is computed from items and rates
Total fulfillment time under this model equals the product of item count and average pick time per item, plus a fixed packing allowance for the whole order. If an order has twelve sellable units, each unit takes three-quarters of a minute to pick on average, and packing the carton always takes three minutes, total pick time is nine minutes and total fulfillment time is twelve minutes.
The identity is deliberately linear: it does not model zone travel curves, batch multi-order picks, or stochastic congestion, so operations can audit every term against a stopwatch sample. Negative pick or pack times are also rejected so clocks never run backward. Zero items yields only the packing term, which is useful for empty-cart or pack-only edge cases in tests.
What you can do with it
3PL and WMS labor estimates
Third-party warehouses feed order item counts and site-specific pick and pack rates into staffing models and SLA reports without custom spreadsheet logic.
Marketplace promise and ETA badges
E-commerce platforms convert cart item counts plus warehouse rates into a fulfillment duration before adding transit time for customer-facing delivery estimates.
FAQ
What time unit should I use?
Any consistent unit works—minutes are typical for warehouse floor work. All three inputs and both duration outputs share that unit; convert at the edge if your source data is in seconds.
Is the pick and pack time estimator free?
The browser tool runs free on your device.
Does this model travel time or multi-order batch picks?
No. It is a linear estimate from item count, average pick time per item, and fixed packing time.
What happens with an order of zero items?
Only the packing time counts, so with 3 minutes of packing the total is 3 minutes, which suits pack-only work. Negative item counts or times are refused, so the clock never runs backward.
What should the packing time include?
Everything done once per order: choosing the carton, void fill, inserts, sealing and the label. Raise it for gift wrap or fragile shipments split over several boxes, and base it on real stopwatch samples.
Related tools
For developers — API access
Everything on this page is available programmatically. This section is for teams who want to wire it into their own systems; everyone else can just use the tool above.
API endpoint
Prefer to automate it? One authenticated POST creates the task; the result comes back by webhook or a signed link. The same capability also runs here on the web, by email and from Telegram — and soon from our app too.
Call it from your stack
curl -X POST https://api.kit.forhosting.com/ecom/pick-pack-time-estimate \
-H "Authorization: Bearer $KIT_KEY" \
-H "Content-Type: application/json" \
-d '{"item_count":12,"pick_time_per_item":0.75,"packing_time":3}'const res = await fetch("https://api.kit.forhosting.com/ecom/pick-pack-time-estimate", {
method: "POST",
headers: {
"Authorization": `Bearer ${process.env.KIT_KEY}`,
"Content-Type": "application/json"
},
body: JSON.stringify({
"item_count": 12,
"pick_time_per_item": 0.75,
"packing_time": 3
})
});
const { task_id } = await res.json();import os, requests
res = requests.post(
"https://api.kit.forhosting.com/ecom/pick-pack-time-estimate",
headers={"Authorization": f"Bearer {os.environ['KIT_KEY']}"},
json={
"item_count": 12,
"pick_time_per_item": 0.75,
"packing_time": 3
},
)
task_id = res.json()["task_id"]<?php
$res = file_get_contents("https://api.kit.forhosting.com/ecom/pick-pack-time-estimate", false, stream_context_create([
"http" => [
"method" => "POST",
"header" => "Authorization: Bearer " . getenv("KIT_KEY") . "\r\nContent-Type: application/json",
"content" => '{"item_count":12,"pick_time_per_item":0.75,"packing_time":3}',
],
]));
$task = json_decode($res, true);body := bytes.NewBufferString(`{"item_count":12,"pick_time_per_item":0.75,"packing_time":3}`)
req, _ := http.NewRequest("POST", "https://api.kit.forhosting.com/ecom/pick-pack-time-estimate", body)
req.Header.Set("Authorization", "Bearer "+os.Getenv("KIT_KEY"))
req.Header.Set("Content-Type", "application/json")
res, _ := http.DefaultClient.Do(req)Example request
{
"item_count": 12,
"pick_time_per_item": 0.75,
"packing_time": 3
}Example response
{
"task_id": "tsk_a1b2c3d4e5f6a1b2c3d4e5f6",
"type": "ecom.pick_pack_time_estimate",
"status": "queued",
"_links": {
"result": "/tasks/tsk_…/result"
}
}The API is asynchronous: the call returns a task_id immediately and the result arrives by webhook. Polling is capped at 1 req/s per task.
Pricing
Published price — no tokens, no invented credits. A failed task is never charged.
Errors
| HTTP | Code | Meaning |
|---|---|---|
401 | unauthorized | Missing or invalid API key. |
402 | insufficient_balance | Your balance doesn't cover the task price. |
404 | unknown_type | That task type doesn't exist. |
429 | rate_limited | Too many requests. Use the webhook instead of polling. |
Technical notes
Enter item_count, pick_time_per_item, and packing_time as finite numbers that share one time unit—typically minutes—and receive total_pick_time and total_time in the same unit.
How pick and pack time is computed from items and rates
Send required fields item_count, pick_time_per_item, and packing_time as JSON numbers or numeric strings. Aliases items, count, n, quantity, qty, and lines map to item_count; pick_time, pick_minutes, minutes_per_item, avg_pick, and time_per_item map to pick_time_per_item; pack_time, packing_minutes, pack_minutes, and fixed_pack map to packing_time. A negative item_count is a hard product error because an order cannot contain fewer than zero units. Magnitude caps keep results finite on the Worker isolate.
Reading the response fields and choosing realistic pick rates
Packing_time should cover carton selection, void fill, inserts, sealing, and label application for a typical order profile—raise it for gift wrap or fragile multi-box shipments. On success the response echoes item_count, pick_time_per_item, and packing_time after stable rounding, plus total_pick_time equal to item count times pick time per item, total_time equal to total pick time plus packing time, a human-readable formula string, and method equal to pick_pack_linear_estimate. Use total_time when you need a single ship-readiness duration; use total_pick_time when you split labor between pickers and packers or when packing is handled by a separate station with its own queue. The formula field is safe to show next to the numbers so planners see total_time equals item_count times pick_time_per_item plus packing_time. Calibrate pick_time_per_item from real warehouse samples rather than marketing throughput claims: multi-SKU orders, heavy items, and cold storage often need a higher average than single-SKU light goods. This endpoint does not route pick paths, count inventory, or schedule carriers; it is a transparent arithmetic check, not a full WMS. Missing required fields, non-finite values, and negative item_count all fail with invalid_input and are not charged after the engine rejects the request, so bad form posts never drain prepaid balance on a validation failure.
API usage, pricing, fulfillment workflows, and practical limits
Call the free in-browser pick and pack time estimator for shift briefings, training demos, and quick SLA sketches without installing a spreadsheet. For multi-wave or batch picks, call once per order or once per wave with the units assigned to that wave so each segment stays auditable in logs and support tickets. Send a JSON body with item_count, pick_time_per_item, and packing_time (or the documented aliases). Use the prepaid API when a WMS, OMS, 3PL portal, marketplace promise engine, or labor-planning dashboard needs a stable contract under KIT balance at $0.002 per successful item; validation failures never consume balance. Pair this endpoint with upstream order-line counts so item_count reflects sellable units actually picked, not line SKUs alone when quantities exceed one. Authors shipping SDKs can map total_time into cut-off clocks that show “about twelve minutes of floor work left”—the same linear shape supervisors sketch on a whiteboard when they estimate pick and pack labor by hand for a same-day window.
Integration use cases
Same-day ship cut-off planning
Operations multiplies open order item counts by average pick minutes, adds fixed pack time, and compares total_time against the carrier cut-off clock.
Technical questions
How do I estimate pick and pack time with this calculator?
Send JSON with item_count, pick_time_per_item, and packing_time in the same time unit (usually minutes). The response includes total_pick_time and total_time from total_time = item_count × pick_time_per_item + packing_time.
What happens if item count is negative?
The request fails with invalid_input. A negative item_count is rejected under the product contract and is not charged.