Most babies start crawling between 8 and 12 months old, though some begin as early as 6 months. Crawling varies so much from baby to baby that the CDC actually removed it from its official developmental milestone checklist in 2021, because researchers couldn’t pin down an age when 75% of babies would be doing it. That doesn’t mean crawling isn’t important. It just means the timeline is unusually flexible.
What Happens Before Crawling
Babies don’t just wake up one day and crawl. They spend months building strength and coordination through a predictable sequence of smaller skills. In the first two months, your baby is simply learning to lift and turn their head during tummy time. By 3 to 4 months, they’re pushing up on their forearms and rolling from belly to back.
Around 5 months, things accelerate. Babies start rolling from back to belly, pushing up on fully extended arms, and pivoting in circles on their stomachs. These movements build the core, shoulder, and hip strength that crawling demands. Sitting without support, which typically comes around 6 months, is another key prerequisite. Once a baby can hold themselves upright, they have the trunk stability to get on hands and knees.
Tummy time is the single most important daily practice for building toward crawling. The Cleveland Clinic recommends starting with just a few minutes at a time for newborns, working up to 15 to 30 total minutes by 2 months, 30 minutes by 3 months, and 60 to 90 minutes a day after 6 months. That tummy time gradually transitions into rocking on hands and knees, then into forward movement.
Not All Crawling Looks the Same
The classic hands-and-knees crawl is just one option. Babies come up with a surprising variety of solutions for getting around, and all of them count.
- Belly or commando crawl: The baby drags their stomach along the floor, pulling forward with their arms. This is often the first version of crawling a baby tries before graduating to hands and knees.
- Bear crawl: Similar to the classic crawl, but with straight elbows and knees, so the baby walks on hands and feet instead of hands and knees.
- Bottom scooting: The baby sits upright and uses their arms to scoot forward on their bottom. Some babies never move past this stage and go straight to walking from here.
Any of these styles accomplishes the same basic goal: independent mobility. If your baby is moving across the room in some fashion, they’re hitting the mark, even if it doesn’t look like the textbook version.
Why Crawling Matters for the Brain
Crawling is the first major activity that requires a baby to coordinate opposite sides of their body at the same time: right hand with left knee, then left hand with right knee. This type of cross-body movement strengthens the connection between the brain’s two hemispheres. Specifically, it builds up the bridge of tissue that lets the left and right sides of the brain communicate efficiently. Over time, this improved communication supports focus, problem-solving, and impulse control.
One pediatric occupational therapist writing for Mary Washington Healthcare noted that when she works with school-age children who struggle to sit still for extended periods, fidgeting and slouching through the day, most of their parents report that those kids skipped crawling as babies. That’s an observation, not a diagnosis, but it highlights why many therapists still consider crawling a key developmental experience even though it’s no longer on the official milestone checklist.
Some Babies Skip Crawling Entirely
A meaningful number of babies never crawl at all. They go from sitting to pulling up to standing to walking, bypassing the floor-level stage completely. This is common enough that the AAP and CDC couldn’t set a standard age for the milestone, which is why they removed it from their checklist.
That said, if your baby is trying to pull to standing without having spent time on hands and knees, many pediatric therapists recommend gently encouraging more floor time. You can do this by placing toys just out of reach while your baby is on their belly, or by getting down on the floor yourself. A few months of crawling before walking gives your baby’s core, shoulders, and coordination extra time to develop.
Signs of a Possible Delay
Because crawling timelines are so variable, the absence of crawling alone isn’t usually a concern before 12 months. What matters more is the overall pattern of movement. By 12 months, a baby who isn’t crawling, can’t stand when supported, and has lost skills they previously had is showing signs that warrant a conversation with their pediatrician.
Other things to watch for at 12 months: not pointing at objects, not searching for a toy you’ve hidden while they watched, not waving or shaking their head, and not saying any single words like “mama” or “dada.” These milestones span motor, cognitive, and language development, and falling behind in multiple areas is more significant than being late on any single one. A baby who isn’t crawling at 11 months but is pulling to stand, babbling, and engaging with the world around them is on a very different trajectory than one who shows delays across several categories.
Baby-Proofing Once Mobility Starts
The moment your baby starts moving independently, your home needs to be ready. Crawling babies are fast, curious, and have a talent for finding exactly the thing you didn’t think to secure.
The U.S. Consumer Product Safety Commission highlights two priorities. First, anchor heavy furniture. Dressers, bookshelves, TV stands, and freestanding stoves can tip over when a baby pulls up on them, causing crushing injuries. Secure them to the wall with anti-tip brackets. Second, cover electrical outlets with protectors that are large enough to prevent choking and difficult enough for small hands to remove. Tamper-resistant outlets, which require equal pressure on both slots to insert a plug, are the safest long-term option if you’re replacing old receptacles.
Beyond those basics, get down on the floor at your baby’s eye level and look around. You’ll spot hazards you’d never notice from standing height: cords dangling from blinds, small objects under furniture, gaps between the couch and the wall. The crawling stage is brief, but babies cover a lot of ground during it.