Wall Sit Calorie Calculator — How Many Calories Do Wall Sits Burn?

How Wall Sit Calories Are Calculated

A wall sit is an isometric (static) lower-body exercise performed by holding a seated position with your back flat against a wall and knees bent at approximately 90°. Unlike dynamic exercises, there is no movement — the muscles sustain continuous tension throughout the hold.

This calculator uses the MET-based calorie formula from the Compendium of Physical Activities. MET (Metabolic Equivalent of Task) measures how much energy an activity requires relative to rest (1 MET ≈ 1 kcal per kg of body weight per hour).

The Wall Sit Calorie Formula

Calories = MET × Weight (kg) × Time (hours)

Wall sits are timed in seconds or minutes, so the duration is converted to hours before applying the formula:

Time (hours) = Duration (seconds) ÷ 3600

MET Values by Wall Sit Variation

MET values for wall sits are derived from isometric exercise classifications in the Compendium, analogous to other sustained static lower-body holds. The isometric nature means energy expenditure is lower than equivalent dynamic exercises despite the significant perceived effort.

Calories Burned by Duration and Body Weight (Standard Wall Sit, MET 3.5)

Why Isometric Exercises Burn Fewer Calories Than Dynamic Ones

In dynamic exercises (squats, lunges, box jumps), muscles repeatedly contract and relax, driving repeated ATP synthesis and high oxygen consumption. In isometric exercises like wall sits:

• No concentric work: Muscles maintain constant length — no movement means no repeated contraction cycles
• Lower ATP turnover: Sustained tension uses energy more efficiently than repeated contractions
• Occlusion effect: At high levels of contraction, blood flow is partially restricted, which limits oxygen delivery — the body shifts toward anaerobic pathways

However, the perceived effort in a wall sit is typically much higher than the calorie burn suggests. A 2-minute wall sit that burns ~5 kcal feels significantly harder than 5 kcal worth of walking.

Example Calculation

A 75 kg (165 lbs) person holds a 90-second standard wall sit:

• MET = 3.5
• Weight = 75 kg
• Time = 90 ÷ 3600 = 0.025 hours
• Calories = 3.5 × 75 × 0.025 = 6.6 kcal

Important Disclaimer

Calorie estimates carry a margin of error of approximately ±25–35%. Wall sits are primarily valued for quadriceps strength and endurance development, not calorie burn. For fat loss, pair wall sit training with higher-intensity cardio in a combined programme. These calculations cover sustained hold time only — brief rests between sets are not included.