Food & grocery
Fresh food, meal kits, and chilled delivery
Use the estimate to plan flexible gel packs, carton liners, and cold-media placement for short-to-mid transit lanes where freshness and packing speed matter.
Chilled Packout Tool
Ice Pack Calculator for Cold Chain Shipping
Use this calculator to build a practical starting point for chilled and cool-chain packouts. Enter the temperature lane, transit time, box size, payload weight, insulation level, route conditions, and freeze-sensitivity to compare gel ice packs, ice bricks, and PCM-style layouts before requesting samples or a quote.
What this calculator estimates
It estimates chilled cold-media mass and pack layout direction from target temperature, transit hours, ambient profile, route complexity, payload weight, box size, insulation level, starting product temperature, and freeze-sensitivity. Treat the result as a planning estimate, not a validated thermal qualification.
For 2–8°C and 0–10°C lanes
Gel ice packs, ice bricks and PCM planning
Food, meal kit, seafood and pharma shipments
Estimate first, validate before scale-up
Need frozen or sub-zero shipping? Use the Dry Ice Calculator
Best use cases
Use this calculator when the shipment needs cooling, not freezing
Start here when the shipment needs chilled protection rather than a frozen or dry-ice packout. The right cold source depends on the temperature range, route time, insulation quality, payload mass, and whether the product can tolerate direct contact with frozen packs.
Seafood & protein
Cold-chain parcels with higher thermal load
Use payload weight, transit time, and hot ambient conditions to decide whether a heavier ice brick or hybrid layout is more practical than small gel packs alone.
Pharma & lab
Freeze-sensitive 2–8°C planning
Use the result as a starting point, then add separator layers, logger review, SOP controls, and qualification testing before routine shipment.
Calculator
Enter your shipment profile
Use the fields below to describe the shipment you are planning. The calculator gives a starting estimate only. Final ice pack quantity, placement and packaging structure should be confirmed with your actual product, route conditions, preconditioning process and thermal test requirements.
Planning note: Fully precondition cold media before packout, pre-chill payload where possible, and avoid direct contact with freeze-sensitive products unless the packout includes a separator or validated buffer strategy.
Calculator input
Build your lane estimate
Enter the shipment profile below. The calculator returns a planning estimate only and is not a substitute for validated thermal packaging studies.
Custom coolant support
Need gel packs or PCM packs sized for this estimate?
Share the calculator result, payload, temperature band, route time, box dimensions, freeze sensitivity, and expected volume. Tempk can review pack size, film, conditioning, and coolant placement for sampling.
How to use it
A simple workflow for better ice pack planning
Use these steps as a reference when filling in the calculator fields. Each input affects the estimate in a different way.
| Step | What to enter | Why it matters |
|---|---|---|
| 1. Define the lane | Use case, target temperature band, transit hours, ambient profile, and route complexity. | Longer transit, hotter ambient exposure, and export or multi-stop handling increase cold-media demand. |
| 2. Enter packaging details | Box inner dimensions, payload weight, insulation type, and product starting condition. | Payload mass, internal air volume, insulation quality, and pre-chilling affect how much heat the packout must absorb. |
| 3. Select handling constraints | Preferred pack format and whether the product is freeze-sensitive. | Freeze-sensitive goods need a buffer or separator; longer lanes may require ice bricks or hybrid layouts. |
| 4. Review the result | Recommended cold-media mass, pack count, layout, warnings, assumptions, and quote summary. | The result helps prepare RFQ notes and guides which product category to review next. |
Decision guide
Gel ice pack, conditioned gel pack, ice brick, or hybrid layout?
The calculator helps choose a practical direction, but the final packout should always be checked against real route conditions, product sensitivity, and validation needs.
Flexible coverage
Gel ice pack setup
Best for shorter chilled lanes, faster manual packout, flexible placement, and products that need cooling without the ultra-cold behavior of dry ice.
2–8°C caution
Conditioned gel pack or PCM-style buffer
Useful when the product is freeze-sensitive or when a tighter 2–8°C window is more important than simply adding colder packs.
Longer hold time
Ice brick or hybrid setup
Better for longer transit, higher payload mass, hot ambient exposure, structured placement, or repeatable packout requirements.
Recommended next steps
Continue to products, solutions, or route checks
Once you have a starting estimate, use these paths to compare cold sources, insulation options, shipment scenarios, and route checks before sending an RFQ.
Flexible and reusable cold packs for chilled food, grocery, meal kit, pharma and general cool-chain shipments.
Rigid cold source with stronger structure and repeatable placement for longer hold time, reusable programs and cooler-box pack-outs.
Improve thermal protection around the cold source with insulated bags, box liners and carton-based cold-chain packaging.
Prepared Foods Cold Chain Solutions
Review chilled ready meals, salads, sandwiches, and prepared food lanes where gel packs and liners are often used.
Parcel & Express Delivery Solutions
Use this path for last-mile chilled parcels, meal delivery boxes, and overnight cool-chain shipments.
Review seafood and protein lanes where payload weight, hot ambient exposure, and transit time affect ice pack demand.
Use this path for 2-8?C shipments where conditioning, separators, logger evidence, and qualification controls matter.
Medicines Cold Chain Solutions
Review medicine and injection lanes where cold-source planning must be paired with handling and documentation controls.
For frozen, sub-zero, ultra-cold or long export routes where gel packs may not be enough.
For buyers who need help choosing the full system: cooling media, liner, bag, EPP box, VIP box or pallet cover.
Review dwell time, ambient exposure, handoffs, monitoring needs, and validation gaps before shipment.
FAQ
Ice pack planning FAQs
Common questions buyers ask when planning cooling media for chilled and cool-chain shipments.
How many ice packs do I need for shipping?
It depends on the target temperature, transit time, payload weight, box size, insulation level and outside exposure. A short 0–10°C food delivery lane may use a lighter gel-pack layout, while a longer 2–8°C medical lane may need more reserve, better insulation and a documented pack-out. For more background, read How Long Do Ice Packs Stay Cold?
Should I choose gel ice packs or ice bricks?
Gel ice packs are flexible and useful for many chilled food, grocery and pharma shipments. Ice bricks are more structured and are often easier to place consistently in cooler boxes or repeatable pack-outs. If the route is longer, hotter or more standardized, rigid ice bricks may be easier to control. See Gel Ice Pack and Ice Brick product ranges.
Can this calculator be used for 2–8°C pharmaceutical shipments?
Yes, but only as an early planning tool. For pharmaceutical and medical shipments, the final pack-out should be confirmed with product requirements, preconditioning steps, temperature monitoring, route profile and qualification testing. Start with the calculator, then review Vaccine cold chain solutions or Medicine cold chain solutions.
Can gel ice packs hold a shipment for 48 hours?
Some lanes can be designed for 48-hour chilled or frozen-class performance when the PCM setpoint, insulation level, pack placement and route profile are matched correctly. For hot routes, larger payloads or export lanes, validation with a data logger is still needed. Read: Can Ice Gel Packs Stay Cold 48 Hrs Like Dry Ice?
When should I use dry ice instead of gel packs?
Dry ice is usually considered for frozen, deep-frozen, long-duration or very high-risk routes. Gel packs and PCM packs are often simpler for chilled 2–8°C or 0–10°C shipments because they are easier to handle and do not require the same ventilation and hazardous-goods process as dry ice. Read: Gel Packs vs Dry Ice or use the Dry Ice Calculator.
How should ice packs be placed inside an insulated box?
A practical layout usually starts with preconditioned packs, tight payload placement, void fill, side coverage and a stronger top layer because warm air and sun exposure often affect the top and outer walls first. Freeze-sensitive products may need a separator layer between the product and the cold source. See: Cold Packs for Overnight Shipping and Insulated Box Liner guide.
Is the result a validated thermal model?
No. The result is a starting estimate for sourcing and pack-out discussion. Real shipment performance depends on product thermal mass, preconditioning, insulation, route temperature, handling time, packing SOP and validation testing. For validated or documented programs, request technical documentation or a sample test.
What inputs should I prepare before using the calculator?
Prepare target temperature band, transit time, ambient exposure, route type, box inner dimensions, payload weight, insulation type, product starting temperature, and whether the product is freeze-sensitive. The more accurate these inputs, the more useful the starting estimate.
Get Pack-out Support
Need help turning this estimate into a real pack-out?
Share your route, box size, product type, target temperature and estimated result with Tempk. Our team can help you compare gel ice packs, ice bricks, insulated liners, EPP boxes, VIP boxes and custom pack-out options for bulk or OEM cold-chain programs.
Send your shipment profile to Tempk
Target temperature
Transit hours
Box dimensions
Payload weight
Insulation type
Freeze sensitivity
Send us your shipment details and estimated pack-out. Tempk can review your route, recommend suitable gel ice packs or ice bricks, and suggest the right insulated liner, bag or cooler box for bulk production.