How Many Calories Do You Burn Doing 100 Leg Raises? | Quick Math Guide

Calories Burned Doing 100 Leg Raises: Real-World Range

Calorie burn comes down to two levers: how hard the set feels and how long those 100 reps take. The standard estimate uses METs. The formula is MET × 3.5 × body weight in kilograms ÷ 200 × minutes. Calisthenics sits near 3.8 MET for moderate work and around 8.0 MET for a strict, breath-punching style, based on the Compendium of Physical Activities. That span sets the window.

Many lifters finish 100 floor leg raises in 5–10 minutes. A 70 kg person lands near 23–47 kcal at a moderate pace. Move to a hanging version and the same person can hit roughly 49–98 kcal if the set stretches 5–10 minutes. Lighter bodies sit lower; heavier bodies sit higher.

What Changes The Number Most

Tempo matters. Faster reps shrink set time and total burn. Strict control stretches time and bumps the count. Range of motion matters as well. Knees to hips costs less energy than toes to bar. Breathing pattern, rest between mini-sets, and grip choice all nudge the total.

Quick Table: 100 Reps By Body Weight And Pace

The figures below use the MET method at 3.8 MET (moderate floor style). If your form is strict hanging, expect numbers near the higher band shown later.

Body Weight	5-Minute Set (≈20 rpm)	8-Minute Set (≈12–13 rpm)
55 kg	≈18 kcal	≈29 kcal
70 kg	≈23 kcal	≈37 kcal
85 kg	≈28 kcal	≈45 kcal

Dial in your plan once you set your daily calorie needs. That way, small burns like this fit neatly in the bigger picture.

How The 100-Rep Estimate Works

Here’s the math using the MET method. Pick a style, pick a pace, and plug in your body weight. The only moving parts are MET and minutes. MET reflects relative strain, while minutes scale the total. Keep a steady cadence and note the clock to keep estimates tight.

Step 1: Choose The Style

Floor or bench leg raises track near “calisthenics, moderate.” Hanging leg raises move closer to “calisthenics, vigorous.” Those entries list 3.8 and 8.0 MET in the Compendium. Light, short-arc versions can drift toward 2.8–3.5 MET.

Step 2: Estimate The Minutes

Use your pace to guess set length. At 20 reps per minute, 100 reps take 5 minutes. At 12–13 reps per minute, you’re closer to 8 minutes. Rest-pause adds time; smooth breathing trims it.

Step 3: Run The Formula

Let’s use a 70 kg lifter. At 3.8 MET for 6 minutes: 3.8 × 3.5 × 70 ÷ 200 × 6 ≈ 27.9 kcal. At 8.0 MET for the same 6 minutes: 8.0 × 3.5 × 70 ÷ 200 × 6 ≈ 58.8 kcal. Same reps, different load and time cost. A range tells the story better than one number.

How Many Calories Do You Burn Doing 100 Leg Raises? Factors That Sway Results

Body Weight And Limb Leverage

Heavier bodies do more work each minute. Longer femurs and straighter knees raise the moment arm, which pushes energy use up. Tuck the knees and the lever shortens, so the burn dips.

Form: Lying, Seated, Or Hanging

Lying versions share load across more contact points, so they trend lower on the MET scale. Seated V-ups sit between lying and hanging. Hanging removes support and forces the trunk to do more, which is why strict hanging sets feel punchy.

Range, Tempo, And Rest

Full hip flexion with a slow lower phase bumps time under tension. Fast partials with bounce shave minutes and calories. Short breathers between mini-sets add time without much movement, so the extra burn is small.

Core Strength And Grip Limits

Strong abs move the legs with steady rhythm. Weak links slow the set. On a bar, grip fatigue ends the work early, which keeps calories in the lower band even if the trunk still has more to give.

Hanging Versus Floor: Same Reps, Different Burn

This snapshot uses a 70 kg lifter to show style impact. Numbers assume 5 or 10 minutes of continuous work at the listed MET.

Style (MET)	5-Minute Total	10-Minute Total
Floor, Moderate (3.8)	≈23 kcal	≈46 kcal
Hanging, Vigorous (8.0)	≈49 kcal	≈98 kcal
Light Partial (2.8)	≈17 kcal	≈34 kcal

Form Tips To Get Consistent Numbers

Set A Cadence

Pick a speed you can hold for the full 100. A metronome app or a simple timer works. Clean reps beat rushed reps.

Control The Lowering Phase

Lower the legs on a two-count. No swinging. Pause at the bottom to stop momentum. Your abs should do the work, not the hips.

Pick A Range You Can Own

Knees to 90° is steady and repeatable. Toes to bar is a different lift. Match the range to your capacity and your numbers will track week to week.

Stack Mini-Sets

Try 5 × 20 with 10–20 seconds between blocks. It keeps form tight and makes timing easier. Short breaks help you stay in the same MET band across the session.

Where External Data Fits

The Compendium of Physical Activities lists “calisthenics, moderate” at 3.8 MET and a vigorous variant at 8.0 MET. CDC intensity guidance explains how intensity shifts by person and why a movement can feel moderate to one person and tough to another. Those two sources frame the ranges used here without leaning on gadget guesses or gym lore.

Make It Work In A Plan

Pair With Carry Or Walk

Core work burns fewer calories than rhythmic cardio. Pair your 100 reps with a 20-minute brisk walk or a loaded carry. The combo covers trunk strength and a steady calorie stream.

Rotate Ab Moves

Use reverse crunches, dead bugs, and planks on other days. Variety helps your back and keeps volume in check.

Track Output, Not Guesswork

Write down minutes and rep pace. Re-run the formula now and then. Over a month you’ll see a trend, which beats random estimates.

Want deeper weight-loss math? Try our calorie deficit guide.