| What it does | Free Mifflin-St Jeor calculator that shows every step of the equation
| Ultra-marathon nutrition calculator for race-day fuelling
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| Stage | Not given
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| Founded | Not given
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| Based in | Not given
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| Pricing model | Free
| Freemium
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| Pricing | Not given
| Free account with demo calculator and one saved plan. Pro is €13 EUR once per plan for aid-station planner, race-day forecast, sharing, PDF, race-week reminder and learning from past race.
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| Key features | - Shows full equation working with step-by-step substitution
- Multiple activity levels from sedentary (×1.2) to extra active (×1.9)
- Katch-McArdle calculator using body fat percentage
- Step-based TDEE estimation
- Adaptive TDEE calculator from weight changes
- Embeddable calculator iframe
- Metric and imperial unit switching
- Comparison with other equations like Harris-Benedict
| - Carbohydrate, fluid and sodium calculations per hour based on weight, effort and weather
- Fuel ideas in gels, chews, drink mix or real food with mixed strategy options
- Aid-station planner with up to 60 stations and drop-bag lists
- GPX file import for race route and waypoints
- Race-day forecast with heat-index adjustments
- Hour-by-hour race plan table with night-race adjustments
- Shareable private links to share plans with crew
- Printable PDF of the complete race plan
- Race-week reminder by push or email with key numbers
- Post-race review to learn from past races
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| What makes it different | - Shows all working so users can verify the math themselves
- Uses the most accurate equation for healthy adults
- Multiple calculation methods beyond basic equation
- Transparent about accuracy limitations and sources
- Completely free with no tracking or cookies
| - Demo calculator requires no account and sends nothing to the browser
- One-time €13 EUR payment per plan with no subscription
- Personalised calculations based on published sports-nutrition ranges scaled to your weight and conditions
- Plans are private by default with revocable sharing links
- No ad trackers and ability to delete all personal data
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| Community votes | 0 | 0 |
| DR (Domain Rating by Ahrefs) | 16 ▲ +1 (up) since last check | Not checked yet ● no change since last check |
| Trust Flow (Majestic) | 1 | 0 |
| Citation Flow (Majestic) | 16 | 0 |
| Referring domains (Majestic) | 3 | 0 |