How to Level a Shipping Container (Step by Step)

A shipping container that is not level causes a surprising number of problems: doors that will not open or seal, water that pools instead of draining, and stress on the container's frame over time. Whether you are setting up a new container or fixing one that has settled, leveling it properly is worth the effort. Here is how to level a shipping container the right way.

Why leveling matters

• Doors work properly. Container doors are heavy and precise. If the container twists out of level, the doors bind, stick, and stop sealing.
• Water drains away. A level (or very slightly sloped) container sheds water off the roof and keeps it from pooling around the base.
• The structure lasts. Containers are strongest when supported evenly at the corners. Sitting unevenly puts a twisting load on the frame.

Check the level first

Before adjusting anything, find out how far off it is. Use a long level on the floor and the door sill, and check all four corners. Containers are designed to be supported at the corner castings, so what matters most is that the four corners sit at the correct relative height, not that the middle is perfect.

How to level a container

Support the corners

Containers carry their load through the corner castings, so that is where support belongs. Set the container on solid footings at the corners, such as concrete blocks, piers, or pads, rather than supporting it along the middle of the rails.

Jack and shim

To raise a low corner, lift it with a jack rated for the load and add support underneath. A 12-ton bottle jack handles the lift, and a leveler booster helps build a stable, even base. For lifting and leveling together, a lift and level bundle pairs a lifting bracket with a bottle jack. If you need to rig or lift, lifting hooks attach to the corner castings.

Work around the corners

Lift one corner at a time, add or adjust support, and recheck with your level. Move around the container in steps rather than trying to fix everything at once, rechecking as you go until all four corners sit true.

Common mistakes to avoid

• Supporting the middle instead of the corners. The corner castings carry the load. Blocking the middle can stress the floor and rails.
• Using unstable supports. Stacked loose blocks or rotting wood can shift or fail. Use solid, stable footings.
• Skipping ground prep. Soft or uneven ground will let the container settle again. Compact and prepare the base first.
• Getting under a jacked container. Never put any part of your body under a container held up only by a jack. Add support immediately.

Leveling is the finishing step after placing a container. Browse jacks and levelers for the gear, or see all moving and positioning equipment.

Frequently asked questions

How do you level a shipping container?

Support the container at its four corner castings on solid footings such as concrete blocks or piers. Lift any low corner with a rated jack, add stable support underneath, and recheck with a long level, working around the corners until all four sit true.

Does a shipping container need to be perfectly level?

It should be close to level so the doors operate and seal and the frame is not twisted. A very slight slope can actually help water drain off the roof, but the four corners need to be supported at the correct relative heights.

What do you put under a shipping container to level it?

Solid footings at the corners, such as concrete blocks, piers, or pads, plus shims or leveling supports to fine-tune each corner. Avoid supporting the middle of the container or using unstable stacked materials.

Can you level a container that has already settled?

Yes. Lift the low corners with a rated jack, prepare a stable base, add support, and recheck level. If the ground caused the settling, prepare and compact it first so the container stays level afterward.

This guide is part of our complete resource on how to move a shipping container.

Moving the container into place first? Start with how to move it without a crane.