Newborn feeding schedule calculator
Enter your baby's age in weeks and see the usual feeding pattern: at 4 weeks that is 6 to 10 feeds a day, every 2.5 to 4 hours, with 3 to 5 ounces per feed. Ranges are general guidance, not medical advice. Free in your browser.
- Free
- Runs in your browser
- No sign-up
- Your data stays on your device
Run — free
Worked example
- Age weeks
- 4
- Age band
- 4_to_8_weeks
- Age label
- 4–8 weeks (1–2 months)
- Stage
- young_infant
- Feeds per day min
- 6
Parents, caregivers, and product teams often need a quick, consistent estimate of how often a baby typically feeds and how much milk or formula fits common pediatric guidance at a given age. This newborn feeding schedule calculator accepts the baby's age in weeks and maps it to a fixed age band with feeds per day, interval hours, ounces and millilitres per feed, and a simple daily volume envelope. The logic is pure and deterministic: the same age always yields the same ranges, so widgets, parenting apps, and backend jobs never disagree. Ranges are educational approximations for healthy term infants—not medical advice—and breastfed babies often feed on demand while formula volumes stay approximate.
How age in weeks maps to feeding bands
Pediatric guidance groups infant feeding into broad age stages rather than a single formula for every day of life. This capability encodes that practice as half-open week bands: early newborn (zero to one week), late newborn (one to four weeks), young infant (four to eight weeks), then infant and older-infant bands through twelve months, plus a toddler milk band from fifty-two weeks upward.
For each band the response reports a minimum and maximum feeds-per-day count, a typical interval range in hours, and a per-feed volume range in fluid ounces with the millilitre conversion using twenty-nine point five seven three five millilitres per ounce. Daily volume minima and maxima are the product of the corresponding feed count and per-feed volume bounds, which gives a wide but useful envelope rather than a false precision single target.
Age is accepted as any finite non-negative number of weeks; fractional weeks stay in the band defined by the same thresholds so a baby at three point five weeks is treated with the one-to-four-week late-newborn ranges. Zero weeks means the early newborn window.
Where these feeding ranges are useful
Parenting apps and baby trackers use a newborn feeding schedule calculator so first-time caregivers can see expected frequency and volume next to their log without hard-coding brittle spreadsheets in every client. Clinics and care-coordination tools may embed the same ranges in educational discharge packets while still routing medical decisions to licensed staff. Inventory and subscription formulators can rough-size monthly can demand from age cohorts using the daily volume envelope without inventing their own pediatric table.
What you can do with it
Parenting apps and baby trackers
Show caregivers typical feeds-per-day and ounce ranges next to their log when they enter the baby's age in weeks.
Formula demand and content tools
Estimate daily volume envelopes by age cohort for educational content, subscription sizing, or clinic handouts.
FAQ
Are these volumes medical advice?
No. Ranges are typical educational approximations for healthy term infants from common pediatric guidance. Follow your clinician for individual care, especially for preterms or special needs.
Does this work for breastfed and formula-fed babies?
Frequency bands apply broadly; per-feed ounces are most useful for formula. Breastfed babies often feed on demand with variable session volumes.
Which age band applies to a baby who is 3.5 weeks old?
The late newborn band, from 1 to 4 weeks. Fractional weeks are placed with the same thresholds as whole weeks, so a baby does not move to the next band until reaching 4 weeks.
Why is the daily volume such a wide range?
Because it multiplies the lowest feed count by the smallest feed and the highest count by the largest. At 4 weeks that gives 18 to 50 ounces a day, a useful envelope rather than a single target.
Can I use it for a premature baby?
It does not adjust for corrected age on its own. If your care team uses a corrected age, convert it to weeks before entering it, and keep following their advice on feeding.
Related tools
For developers — API access
Everything on this page is available programmatically. This section is for teams who want to wire it into their own systems; everyone else can just use the tool above.
API endpoint
Prefer to automate it? One authenticated POST creates the task; the result comes back by webhook or a signed link. The same capability also runs here on the web, by email and from Telegram — and soon from our app too.
Call it from your stack
curl -X POST https://api.kit.forhosting.com/life/baby-feeding-schedule \
-H "Authorization: Bearer $KIT_KEY" \
-H "Content-Type: application/json" \
-d '{"age_weeks":4}'const res = await fetch("https://api.kit.forhosting.com/life/baby-feeding-schedule", {
method: "POST",
headers: {
"Authorization": `Bearer ${process.env.KIT_KEY}`,
"Content-Type": "application/json"
},
body: JSON.stringify({
"age_weeks": 4
})
});
const { task_id } = await res.json();import os, requests
res = requests.post(
"https://api.kit.forhosting.com/life/baby-feeding-schedule",
headers={"Authorization": f"Bearer {os.environ['KIT_KEY']}"},
json={
"age_weeks": 4
},
)
task_id = res.json()["task_id"]<?php
$res = file_get_contents("https://api.kit.forhosting.com/life/baby-feeding-schedule", false, stream_context_create([
"http" => [
"method" => "POST",
"header" => "Authorization: Bearer " . getenv("KIT_KEY") . "\r\nContent-Type: application/json",
"content" => '{"age_weeks":4}',
],
]));
$task = json_decode($res, true);body := bytes.NewBufferString(`{"age_weeks":4}`)
req, _ := http.NewRequest("POST", "https://api.kit.forhosting.com/life/baby-feeding-schedule", body)
req.Header.Set("Authorization", "Bearer "+os.Getenv("KIT_KEY"))
req.Header.Set("Content-Type", "application/json")
res, _ := http.DefaultClient.Do(req)Example request
{
"age_weeks": 4
}Example response
{
"task_id": "tsk_a1b2c3d4e5f6a1b2c3d4e5f6",
"type": "life.baby_feeding_schedule",
"status": "queued",
"_links": {
"result": "/tasks/tsk_…/result"
}
}The API is asynchronous: the call returns a task_id immediately and the result arrives by webhook. Polling is capped at 1 req/s per task.
Pricing
Published price — no tokens, no invented credits. A failed task is never charged.
Errors
| HTTP | Code | Meaning |
|---|---|---|
401 | unauthorized | Missing or invalid API key. |
402 | insufficient_balance | Your balance doesn't cover the task price. |
404 | unknown_type | That task type doesn't exist. |
429 | rate_limited | Too many requests. Use the webhook instead of polling. |
Technical notes
Negative ages fail with invalid_input. The free browser path and the API share one module so demos match production at $0.002 per successful call.
How age in weeks maps to feeding bands
The stage field labels the developmental group (newborn, young_infant, infant, older_infant, toddler_milk) so user interfaces can style copy or show complementary solid-food notes without re-implementing the table.
Input contract, response fields, and errors
POST a JSON body with one required field: age_weeks, a finite number greater than or equal to zero. Values may arrive as JSON numbers or numeric strings; missing fields, empty strings, NaN, and Infinity fail with invalid_input naming the problem. On success the body echoes age_weeks (rounded to two decimals for stable display), age_band as a machine-stable snake identifier, age_label as a human-readable band title, stage, feeds_per_day_min and feeds_per_day_max, interval_hours_min and interval_hours_max, volume_oz_min and volume_oz_max, volume_ml_min and volume_ml_max, daily_volume_oz_min through daily_volume_ml_max, ml_per_oz, method set to pediatric_age_band_table, and a short note reminding callers that ranges are typical guidance only. Example: age_weeks equals four lands in the four-to-eight-week band with six to ten feeds per day, intervals of two point five to four hours, and three to five ounces per feed. Pair the numbers with your own care copy, growth charts, or clinician escalation rules; this endpoint does not diagnose latch problems, failure to thrive, or dehydration and does not adjust for premature corrected age unless you convert weeks yourself before calling.
Integration use cases
SEO landing and free browser widget
Power a newborn feeding schedule page with the same pure module as the API so free demos match paid automation results.
Technical questions
How do I estimate a newborn feeding schedule by age?
Send age_weeks as a finite non-negative number (0 for the first week). The API returns feeds per day, interval hours, and volume ranges in oz and ml for the matching pediatric age band.
What happens if age_weeks is negative?
The task fails with invalid_input. Age in weeks must be greater than or equal to zero; negative ages are not billed.
What does the newborn feeding schedule calculator cost?
The browser tool is free. API requests use prepaid KIT balance at $0.002 per successful call; invalid input is not billed.