Soraya, chasing a PB
Weight 72, Grams per kg 8
576 g
Running Fuel Needs
Running Fuel Needs takes weight, grams per kg and turns them into a number you can read in one sitting. Weight × a common per-kg planning figure. Not a medical dose. It is a quick sense check in the browser, not a diagnosis.
Your details
Enter weight, grams per kg.
What is this calculator?
Running Fuel Needs takes weight, grams per kg and turns them into a number you can read in one sitting. Weight × a common per-kg planning figure. Not a medical dose. It is a quick sense check in the browser, not a diagnosis.
How it works
- Enter weight, grams per kg in the units on the form.
- We apply the method described under the result.
- Read the number as a sketch. If it worries you, take the original figures to a GP.
Common questions
What is the running fuel needs calculator?
It turns weight, grams per kg into a running fuel needs figure you can read in one sitting. Use it as a guide, not a diagnosis.
Does this replace my GP?
No. The maths stays in your browser. Speak to a GP if you are worried about your health.
Can I treat the number as a target?
Treat it as a planning figure. Real weeks wobble. If a goal feels extreme, stop and get proper advice.
Example scenarios
Bridie, run-walk after a niggle
Weight 87.8, Grams per kg 9.8
860.4 g
Priti, lunch-hour miles
Weight 56.2, Grams per kg 6.2
348.4 g
Understanding your results
Treat this as a snapshot for running fuel needs, not a verdict. If the number worries you, take it to your GP rather than stacking new rules on yourself.
About this result
Guidance only. Calculations run in your browser. Numbers are estimates, not a diagnosis.
How we calculate
Weight × a common per-kg planning figure. Not a medical dose.
Limitations
- Illustration only.
- Not personal medical advice.
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