Free learning tools

Numbers, with
understanding.

A useful calculation shows its working. Explore the numbers, see what they mean, and understand what they cannot tell you.

01 / Movement, with context

Put aerobic minutes in context

For adults, compare the aerobic activity you enter with a general population reference. This is context for a conversation, not a personal exercise target or a health score.

Moderate: you can talk, but not sing. Vigorous: only a few words before a breath. Count each minute once. CDC intensity guide ↗

The arithmetic, explained

Your context comes first.

Confirm you are 18 or older to see the comparison. This tool does not adapt advice for pregnancy, rehabilitation or medical restrictions.

For children and parents

What this number leaves out

  • Enter activity that actually matches the intensity category, not all time spent in a gym.
  • Count each minute once; do not enter the same activity as both moderate and vigorous.
  • The two-for-one conversion is for guideline comparison, not equal effort, calories or physiological effects.
  • The reference is not a pass/fail threshold; activity below it can still be worthwhile.
  • Do not add vigorous activity merely to increase the result.
  • Strengthening is a separate part of adult guidance, generally at least two days weekly; this total does not measure it.
  • Older adults’ balance needs and individual suitability are not assessed.
Sources & guidance
  1. CDC: Adult activity overview ↗
  2. CDC: How to measure physical activity intensity ↗
  3. WHO: Physical activity and sedentary behaviour guidelines ↗

Private by design: these entries stay in this page. No account, email or upload is needed.

Your numbers need
your context.

Talk it through with Maddy