How Much Sleep Do Kids Need? A Realistic Bedtime-by-Age Guide

Somewhere between “he needs a nap” and “she reads until midnight if we let her” is the actual question most parents want answered: how much sleep does my child need right now, and what time should that put lights-out? The honest answer moves with age far more than most bedtime advice admits — a routine built for a two-year-old’s sleep needs will fight a six-year-old’s body clock every night.

What “enough sleep” actually means

Enough sleep is not a single number so much as a range wide enough to fit real children and real evenings. Two children of the same age can need genuinely different amounts, and the same child needs more after an active day than a quiet one. The ranges below are a starting point, not a target to hit exactly — the better test is how a child wakes up, not how many hours a clock recorded.

A realistic range, age by age

• 1 to 2 years. Around 11 to 14 hours across the day, usually including one nap. Bedtime commonly falls between 7 and 8 in the evening, with a wake-up around 7.
• 3 to 4 years. Around 10 to 13 hours, with naps thinning out or disappearing by four. Bedtime still tends to sit around 7 to 8, though an un-napped afternoon can pull it earlier.
• 5 to 6 years. Around 10 to 12 hours, almost always without a nap. A school morning tends to fix the wake-up, which pulls bedtime to around 7:30 to 8:30.
• 7 to 8 years. Around 9 to 12 hours. Bedtime drifts a little later, typically 8 to 8:30, but the school wake-up keeps the total roughly steady.

Work backwards from the wake-up, not forwards from dinner

The most reliable way to set a bedtime is to start at the other end of the night. Decide the wake-up time the day genuinely requires — nursery drop-off, the school run — then count back the number of hours suited to your child’s age. A bedtime chosen this way holds up on ordinary weeknights in a way that a bedtime picked to “feel about right” after dinner usually does not.

Signs the bedtime itself needs to move

• Morning wake-ups that fight the alarm. A child who is groggy, tearful or needs several reminders most mornings is usually short on sleep, not short on patience.
• A second wind late in the evening. Getting more awake as bedtime approaches, rather than sleepier, is often a sign bedtime has drifted too late for the child’s actual sleep need.
• Weekend sleep-ins of an hour or more. A big gap between weekday and weekend waking is one of the clearest signs a weekday bedtime is running behind what the body needs.
• A nap that has quietly become non-negotiable. If skipping it wrecks the whole afternoon, the night-time total probably needs topping up, whether that means the nap stays a little longer or bedtime moves earlier.

When a longer bedtime is the right call

Once school genuinely fills the day and naps are gone for good, the evening often has a little more room in it — enough for a longer story before the same total sleep target is met. The trick is keeping the story calm even as it grows: more plot is welcome, more stimulation is not.

None of these ranges are a verdict on a single rough night — they are worth checking over a week, not a bedtime. For the shape of the evening itself, see our guide to a simple bedtime routine for a 3-year-old, and if term time has just reset the whole schedule, resetting bedtime before school starts covers the glide path. Browse the full bedtime collection for tonight’s story, whatever the clock says.