Rates & sources
Population-average body composition metrics. Always consult a qualified clinician before making health decisions.
Source: NHS — Health A-Z — figures refreshed at the start of each tax year.
When to use this calculator
- Before setting a new health goal or checking whether a plan is realistic.
- When you want to compare different assumptions without tracking them manually.
- When you need a quick baseline before discussing the result with a professional.
A realistic US planning example
Use these sample inputs as a quick scenario test, then change one variable at a time to compare outcomes.
Distance (km)
5
Time (minutes)
28
After entering these figures, compare pace, {paceminpermile} min/mile and speed before deciding which scenario looks strongest.
How to read your results
Pace
Use this metric to compare scenarios side by side and understand how the key drivers affect the final outcome.
{paceMinPerMile} min/mile
Use this metric to compare scenarios side by side and understand how the key drivers affect the final outcome.
Speed
Use this metric to compare scenarios side by side and understand how the key drivers affect the final outcome.
{speedMph} mph
Use this metric to compare scenarios side by side and understand how the key drivers affect the final outcome.
Method & assumptionsAuthoritative sources
Common mistakes
- !Using optimistic assumptions without testing a more cautious scenario as well.
- !Comparing outputs from different tools without checking that the inputs match.
- !Treating the result as a final quote instead of a planning estimate.
What to do next
- Try at least one more scenario so you can compare a realistic range instead of a single estimate.
- Use the related calculators below to cross-check the decision from another angle.
- Open one of the linked guides if you need more context before you act on the result.
Frequently asked
Use arrow keys to navigate items, Enter or Space to expand/collapse.
End-of-article next steps
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