Starting Solids Calculator

When to start

Most major health bodies recommend starting solid foods at around six months, alongside continued breast milk or formula. Before four months is not advised, as the digestive system and swallowing coordination are not ready.

The six-month guidance is based on when most babies are developmentally ready and when milk alone begins to fall short on iron in particular. Some babies are ready slightly earlier and some slightly later, which is why readiness signs matter more than the date on the calendar.

The four readiness signs

Standard guidance looks for these together, not individually:

• Sitting up with little or no support — needed for safe swallowing. A baby who cannot hold themselves upright cannot manage food safely.
• Steady head control — the head must stay upright and stable throughout a feed.
• Loss of the tongue-thrust reflex — young babies automatically push objects out of the mouth with the tongue. This fades as they become ready.
• Coordinated interest — reaching for food, watching you eat, opening the mouth toward a spoon. This is different from general grabbing, which babies do with everything.

Signs frequently mistaken for readiness include waking more at night, seeming hungry after milk feeds, and being large for their age. None of these indicate readiness for solids, and all are common at four months for other reasons.

Approaches to first foods

Traditional weaning starts with smooth purées, progressing to mashed and then lumpier textures and finger foods. It offers more control over what is eaten and how much.

Baby-led weaning offers soft finger foods from the start, letting the baby self-feed. It encourages self-regulation and exposure to a wider range of textures earlier.

A combination is what most families actually do, and there is no evidence that one approach produces better outcomes than the other. Choose whichever suits your baby and your household.

Whichever route, introduce one new food at a time and wait two or three days before the next. This makes it far easier to identify the cause if a reaction occurs.

Iron, allergens, and what to avoid

Iron is the nutrient that matters most at this stage. Iron stores built in the womb start running low around six months, so iron-rich foods are worth prioritising early — meat, fish, eggs, lentils, beans, and fortified cereals. Vitamin C alongside them improves absorption.

Allergens. Current guidance in most countries recommends introducing common allergens — egg, peanut, dairy, wheat, fish, soy — from around six months rather than delaying. Evidence indicates early introduction reduces rather than increases allergy risk. Introduce them one at a time, in small amounts, at home during the day. If your baby has severe eczema or a known food allergy, speak to your GP first.

Avoid entirely in the first year: honey (risk of infant botulism), whole cow's milk as a main drink, added salt and sugar, and choking hazards such as whole nuts, whole grapes, popcorn, and hard raw vegetables.

Safety while eating

Always supervise, and always have your baby sitting upright — never lying back or in a moving car seat. Avoid propping a bottle or leaving a baby alone with food.

Learn the difference between gagging and choking. Gagging is noisy, involves coughing and going red, and is a normal protective reflex that helps babies learn to manage food. Choking is silent or nearly so, with distress and difficulty breathing, and needs immediate action.

Many parents find an infant first aid course genuinely reassuring before starting solids. It is a small time investment for something you hope never to need.

Expectations for the first months

Milk remains the main source of nutrition for the whole first year. Early solids are about exploration, texture, and skill-building rather than calories — a few teaspoons is a normal amount at the start.

Rejection is normal and often repeated. It can take ten or more exposures before a baby accepts a new food, and pushing rarely helps. Offering without pressure, repeatedly, is what works.

Speak to your health visitor or GP if your baby consistently refuses solids past around eight months, gags excessively or seems unable to manage textures, has any reaction to a food, or if weight gain falters after starting.

Common Questions