When Do Babies Start Crawling? Milestones and Baby Proofing Timeline

88 ft/min — How far a crawling baby travels at just 1 mph — the low end of.

The Room-by-Room Safety Timeline

The 4-to-6-month window is when to address the structural changes — the ones that require hardware, installation time, or furniture rearrangement. Here's what that looks like by space:

Living room: Anchor all top-heavy furniture to the wall studs. The CPSC reports that a child is killed by a tip-over every two weeks in the United States, and the majority of victims are under age six. Bookshelves, dressers, and media consoles are the most common culprits. Use anti-tip straps rated for the furniture weight, and anchor into studs — not just drywall. Cover electrical outlets. Secure or route cords out of reach. Add edge and corner guards to coffee tables and hearths.

Kitchen: Install cabinet locks on any cabinet containing cleaning supplies, sharp objects, heavy cookware, or anything you don't want handled. Under-sink cabinets are the highest priority — the CPSC consistently identifies household chemicals as a leading cause of pediatric poisoning. Magnetic cabinet locks are more reliable than adhesive strap locks; I installed six different strap-lock models across two homes and had one fail on a textured cabinet surface within a week. The magnetic systems require drilling but hold.

Bathrooms: Install toilet locks. Keep medications in a locked container or high cabinet — not just a medicine cabinet at adult chest height, which a toddler on a stool can reach. Set your water heater to 120 degrees to prevent scalding. The AAP notes that scalds are among the most common burn injuries in children under five.

Stairs: Install hardware-mounted gates at the top and bottom of every staircase before your baby begins crawling. Pressure-mounted gates are acceptable at the bottom; they should never be used at the top, where a baby pushing against them could dislodge the gate and fall.

Key Takeaways

• Most babies crawl between 7 and 10 months — your prep window is 4 to 6 months.
• Crawling style varies widely; all variations mean your baby is mobile and floor-level hazards apply.
• At 1 mph, a baby covers 88 feet per minute — reaction time alone isn't a safety plan.
• Furniture tip-overs kill a child every two weeks in the U.S.; anchor before crawling begins.
• Button batteries can cause severe internal burns within two hours — treat them as a top hazard.

What Changes When Crawling Begins

Once crawling is established — usually somewhere in that 7-to-10-month range — the hazard profile shifts quickly. A crawling baby becomes a pulling-to-stand baby within weeks. And a baby who can pull to stand will use anything available as a handhold: a dresser drawer, a tablecloth, a floor lamp. This is why furniture anchoring done at 5 months is not paranoid. It's timed correctly.

The speed escalation is real. In my experience testing infant mobility across different home environments, babies who are new crawlers — tentative, slow, easily distracted — become efficient crawlers within two to three weeks. The 1-to-2-mph average applies to babies who've been crawling for a few weeks, not brand-new ones. But brand-new crawlers become efficient crawlers fast. Don't use the early slowness as a reason to delay safety measures.

And then there's the object relationship. Crawling babies mouth everything they reach. The CPSC's small-parts standard — the cylinder test — defines a choking hazard as any object that fits entirely inside a tube approximately 1.25 inches in diameter and 2.25 inches long. At floor level, you will find objects that meet this definition constantly: coins, button batteries, small toy parts, pen caps, pieces of dry food dropped by older siblings. My older daughter, at about 26 months, had a brief phase of collecting small objects from the floor and presenting them to me proudly. My younger daughter, at 8 months, had no such presentation instinct. Everything went directly to her mouth.

Button batteries are a specific, serious hazard. The CPSC and AAP both flag them as particularly dangerous because they can cause severe internal burns within two hours of ingestion. Remote controls, key fobs, flameless candles, and small electronics all commonly contain them. Secure these items or remove them from accessible areas entirely.

Tummy Time and Why It Matters for This Timeline

Tummy time is the developmental precursor to crawling, and it's worth mentioning here because it gives you a practical early signal. The AAP recommends starting tummy time from birth, building to at least 30 minutes per day by 3 to 4 months. Babies who get consistent tummy time develop the neck, shoulder, and core strength that enables rolling, then sitting, then crawling.

This matters for your preparation timeline because tummy time progress is a visible indicator. A baby who's pushing up onto straight arms during tummy time at 5 months is on a trajectory toward crawling in the next two to four months. A baby who's still struggling to lift their head at 4 months may have a longer runway. Neither is a problem — both are information. Use it to calibrate your baby-proofing urgency.

If your baby resists tummy time, try it on your chest rather than the floor, or use a rolled towel under their chest for support. The goal is building strength, and the position can be adapted.

The Real Point of This Timeline

Baby-proofing is not a one-time event. It's a practice that evolves as your child's abilities evolve — and the crawling milestone is the first major inflection point. The parents who feel prepared are almost always the ones who started before it felt necessary.

Start your floor-level audit at 4 months. Anchor the furniture at 5. Get the cabinet locks installed by 6. By the time your baby is rocking on all fours and eyeing the dog's water bowl across the room, you'll be watching with something closer to pride than panic — because you'll already know the path between them is clear.