Key Takeaways
- The Compendium provides 8 hill walking conditions with MET values from 3.8 (gentle ambling) to 8.8 (11-20% grade).[1]
- A 30-minute hill walk at 6-10% grade (7.0 MET) estimates approximately 257 kcal for a 70 kg person.[3]
- Carrying a 21-40 lb load on a 3-10% grade (7.5 MET) increases effort by approximately 97% compared to gentle ambling (3.8 MET).[5]
- Grade (steepness) and load (backpack weight) are the two primary factors that increase caloric demand during hill walking.[6]
- These are informational estimates for personal journaling. Terrain, altitude, and weather further influence actual expenditure.
Quick Climbing Hills Calorie Charts
Estimated kcal for 30 minutes. For informational reference only.
| Grade / Condition | MET | 55 kg | 70 kg | 85 kg | 100 kg |
|---|---|---|---|---|---|
| Hiking / Ambling, No Load | 3.8 | 110 | 140 | 170 | 200 |
| 5-20% Grade, Very Slow Pace | 5 | 144 | 184 | 223 | 263 |
| 1-5% Grade, Moderate-Brisk Pace | 5.3 | 153 | 195 | 237 | 278 |
| 10-20 lb Load, 5-10% Grade | 6.5 | 188 | 239 | 290 | 341 |
| 6-10% Grade, Moderate-Brisk Pace | 7 | 202 | 257 | 312 | 368 |
| 21-40 lb Load, 3-10% Grade | 7.5 | 217 | 276 | 335 | 394 |
| 30% Grade, Slow Pace | 8.5 | 245 | 312 | 379 | 446 |
| 11-20% Grade, Slow-Moderate Pace | 8.8 | 254 | 323 | 393 | 462 |
How the Estimate Works
The calculator applies the standard MET formula with grade/load-specific MET values from the Compendium Walking section:[1]
Calories = (MET × 3.5 × Wt_kg × Duration_min) ÷ 200
Each grade/condition has a fixed MET directly from the Compendium (codes 17080-17195). The Compendium differentiates by grade percentage, walking pace, and load carried.
Grade / Condition Breakdown
Ambling / No Load (3.8 MET)
Gentle terrain with no pack at a leisurely pace. Entry-level hiking on flat or gently rolling trails (Compendium code 17080).[1]
1-5% Grade, Moderate-Brisk (5.3 MET)
Gentle slope at a brisk pace. Common for park trails and urban hill walks (code 17150).[1]
6-10% Grade, Moderate-Brisk (7.0 MET)
Moderate slope at a steady hiking pace. Standard mountain trail grade (code 17155).[1]
11-20% Grade, Slow-Moderate (8.8 MET)
Steep slope with sustained climbing effort. Common on mountain switchbacks and steep trail sections (code 17160).[1]
10-20 lb Load, 5-10% (6.5 MET)
Light backpack (daypack) on a moderate slope. Typical for day hikes with water and supplies (code 17190).[1]
21-40 lb Load, 3-10% (7.5 MET)
Heavy backpack on gentle-to-moderate slope. Multi-day backpacking with full gear (code 17195).[1]
Terrain Factor Guide
The Compendium MET values assume well-maintained trails. Actual effort may increase with:
- Loose terrain: Gravel, sand, or scree increases energy cost by requiring more stabilization.
- Altitude: Reduced oxygen availability at higher elevations increases perceived effort.
- Weather: Wind resistance, rain, and extreme temperatures add to caloric demand.
- Technical terrain: Scrambling, rock hopping, and stream crossings require additional muscular effort.
For these conditions, consider selecting the next higher grade/condition option as an approximation.
Frequently Asked Questions
Sources & References
- Walking - Compendium of Physical Activities. Compendium of Physical Activities. PAC Compendium (2024)
- MET values for physical activities. Ainsworth et al.. Medicine & Science in Sports & Exercise (2011)
- Exercise energy expenditure. PMC. PMC (2019)
- Mountain running energy expenditure. Edge Hill University. Research Paper (2018)
- Hill climbing biomechanics. PMC. PMC (2018)
- Mountain climbing activity research. ResearchGate. ResearchGate (2018)
- Hill walking and hiking research. ScienceDirect. ScienceDirect (2024)
- Mountaineering energy expenditure. PMC. PMC (2023)

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This tool is for informational and journaling purposes only.
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