Free Tool

Cycling Fuel Calculator

Estimate carbs and fluid for a long ride based on duration, intensity and conditions.

Ride duration
e.g. a 3 hour ride: hh 3, mm 00.
Your Fuel Plan Per Hour
Carbs / hour —
Fluid / hour —
Whole Ride
Total carbs —
Total fluid —

Enter a ride duration above to see your fuelling estimate.

How to read this

  • Carbs can come from drink mix, gels, bars, bananas or real food, whatever sits well with you.
  • Rides under about 90 minutes usually just need water, with little to no extra carbs.
  • Start fuelling early rather than waiting until you feel empty.
  • This is a general guide, not medical or nutrition advice. Adjust it to your own experience.
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