What age is But Why Kids for?

In WayTube's assessment, But Why Kids's highest average Age Fit Scores are for ages 5–7 and 8–10, at 76.4 and 76.5 out of 100 — less than a point apart, too close to rank — across 32 videos evaluated individually for topic fit, language and learning value. At age 8, 23 of 32 videos evaluated score 80 or more (72%). Last scored 2 November 2026.

This is WayTube's independent guidance, not an official age rating or a safety guarantee. WayTube is not affiliated with But Why Kids or YouTube.

Educational Science Health Language Learning

Age Fit Score by age

Every video is evaluated against each age separately, so a clip that suits a four-year-old may be far too young for a ten-year-old — and the other way round. These are But Why Kids's averages for each age group, with how many of its evaluated videos reach 80 at each exact age.

Age band	Average score	Videos evaluated	Scoring 80+
Ages 2–4	46.4 Moderate fit	32	6–13% by exact age
Ages 5–7	76.4 Good fit	32	28–66% by exact age
Ages 8–10	76.5 Good fit	32	41–72% by exact age
Ages 11–13	63.4 Good fit	32	25–31% by exact age

Videos scoring 80 or more, by exact age

Age	Videos evaluated	Scoring 80+	Share
2	32	2	6%
3	32	2	6%
4	32	4	13%
5	32	9	28%
6	32	19	59%
7	32	21	66%
8	32	23	72%
9	32	18	56%
10	32	13	41%
11	32	10	31%
12 and older	32	8	25%

An average describes how well these videos fit an age group overall; it does not decide whether any one video can play. In WayTube that is decided video by video, at your child's exact age. Reaching 80 is a score fact, not a promise a video will be available: language, blocked channels and other profile settings also apply. 80 is WayTube's default threshold, and paid plans can set a different one for each child. WayTube scores ages 2 to 12, and ages 11–13 uses the scores for ages 11 and 12. For children aged 13 or older, the app uses the scores calculated for age 12; there is no separate assessment for teenagers.

But Why Kids's averages run from 76.4–76.5 for ages 5–7 and 8–10 down to 46.4 for ages 2–4. From age 6 to 9, at least half of the evaluated videos score 80 or more, peaking at 72% at age 8. At age 12 and older, 25% do. Its scored videos are mostly educational, science and health.

Let WayTube check each video for your child

In the WayTube app you set your child's age, and each video's own score at that age is checked against your threshold before it can play, together with your language and channel settings. So But Why Kids is available video by video, not all or nothing.

How individual videos vary

Within ages 8–10 alone, the share of videos scoring 80 or more runs from 72% at age 8 to 41% at age 10. Even at age 8, where the share is highest, 9 of 32 videos evaluated score below 80. So an average says how well these videos fit an age group overall, not whether a particular video can play: that is decided video by video, at your child's exact age.

Highest-scoring videos for ages 8–10

Scored individually, for this age band. Open any of them to see the full breakdown — which criteria raised or lowered the score, and how language was handled.

What this assessment can and cannot tell you

These figures come from 32 videos from this channel that WayTube has evaluated — not necessarily everything it has published. Shorts, videos not marked as made for kids, and videos withheld after a thumbnail check are left out. Each video is evaluated with AI assistance from its title, description, tags and thumbnail; WayTube does not watch the video or listen to its audio. The scores can show how well a video's subject and level fit an age. They cannot confirm what happens in every scene, and they are not an official age classification.

How to use this as a parent

Start with your child's age in the exact-age table: it shows how many of the evaluated videos reach 80 at that age. Open a few of the videos listed above to see why each one scored as it did, and watch some yourself. In WayTube the decision is made video by video, so you do not have to allow or rule out the whole channel — though you can block it, or allow a single video, from parental controls.

Channels like But Why Kids

Scored the same way, for similar ages.

Questions parents ask

Is But Why Kids safe for a 8 year old?

No score can establish that a show or channel is safe. What WayTube's scores measure is age fit, from each video's title, description, tags and thumbnail — not a review of every scene. For a 8 year old, 23 of the 32 videos from But Why Kids that WayTube evaluated score 80 or more (72%); the rest score lower. Watching a few videos yourself, or with your child, is the best check.

What age is But Why Kids for?

Why does But Why Kids score lower for some ages?

Every video is scored separately for each age from 2 to 12 (for children aged 13 or older, the app uses the scores calculated for age 12), on how well its topic, language level and learning value suit that age, as well as on safety. A lower score for older children can simply mean a video is too simple for them or teaches them less; it does not by itself mean anything harmful was found. A lower score for the youngest can mean the opposite: ideas or language that need more maturity. Where a video has a score breakdown, it shows which applied.

Can my child watch But Why Kids in WayTube?

Video by video. WayTube checks each But Why Kids video's score at your child's exact age against the threshold on their profile (80 by default, and fixed at 80 on the free plan), and videos below it are filtered out unless you allow them. Language settings, blocked channels and other profile settings also apply, so not every video counted here will be available to every child. You can block or allow a channel or a single video from parental controls.

See which But Why Kids videos fit your child

WayTube is free to start. Set your child's age once, and each video is checked against it before it can play.

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