2026-09-16 9 min

METs Calculator

Calories from METs: pick an activity, add weight and time for exact energy cost.

Calculator

Activity

Body Weight kg

Duration min

Results update live as you type

Status:343 kcal grossRunning 10 km/hScore 80/100

METs Calculator Results

Score80

Gross Burn343 kcal gross

Net Burn308 kcal net

ActivityRunning 10 km/h

Per Hour686 kcal/hour

METs9.8 METs

Running 10 km/h (9.8 METs) for 30 min at 70 kg = 343 kcal gross (308 net).

MET Burn Breakdown

Measure	Value	Context
Gross burn	343 kcal	9.8 x kg x h
Net burn	308 kcal	above resting
Activity	Running 10 km/h	9.8 METs
Per hour	686 kcal/h	hourly rate
Per minute	11.4 kcal	minute rate
Duration	30 min	session length

Recommendations

▸Net calories (minus resting) suit weight-loss math; gross suits fueling math.
▸Harder activities earn shorter sessions; easier ones need duration to match burn.
▸Verify with 2-week weight trends — MET tables average populations.
▸Running 10 km/h (9.8 METs) for 30 min at 70 kg = 343 kcal gross (308 net).

Results

Optimal

Session Score

80/100

Session completeness

Gross Burn

343 kcal gross

Total energy

Net Burn

308 kcal net

Above resting

Activity

Running 10 km/h

MET source

Per Hour

686 kcal/hour

Hourly rate

METs

9.8 METs

Intensity value

Field-test VO2max lands within ~10% of lab values when protocols are followed; ratio methods trade accuracy for convenience.

Visualizations

Burn gauges (kcal)

343 kcalGross

686 kcalPer hour

308 kcalNet

Burn vs 1,000 kcal reference

Gross34%

To reference66%

Aerobic Score

Score80/100

Formula

Compendium MET values turn any activity-duration pair into calories.

Gross = METs x kg x hours; net = (METs-1) x kg x hours

Alternative Form

Per-hour rate = METs x weight

Variables

Symbol	Name	Unit	Description
M	METs	ratio	Activity intensity
W	Weight	kg	Body mass
H	Hours	hr	Duration
G	Gross	kcal	M x W x H
N	Net	kcal	(M-1) x W x H

Explanation

Thirty running minutes at 70 kg costs 343 gross — 308 above sitting still.

Derivation

Ainsworth Compendium of Physical Activities.

Step-by-Step Calculation

Follow each step to understand how the result is calculated from your inputs.

Step 1

Look up the activity MET.

Running 10 km/h = 9.8

Activity:running

Intermediate: Compendium lookup

Result: 9.8 METs

Step 2

Convert minutes to hours.

30 / 60

Duration:30 min

Intermediate: / 60

Result: 0.5 hours

Step 3

Multiply into gross burn.

9.8 x 70 x 0.5

MET:9.8

Weight:70 kg

Intermediate: MET x kg x h

Result: 343 kcal gross

Step 4

Subtract resting baseline.

(9.8-1) x 70 x 0.5

Gross:343 kcal

Intermediate: net formula

Result: 308 kcal net

Step 5

Note the hourly rate.

9.8 x 70

MET:9.8

Intermediate: MET x kg

Result: 686 kcal/hour

Step 6

Score the session.

30+ min scores 80

Duration:30 min

Intermediate: duration check

Result: Session score = 80/100

Final Answer

80/100

Worked Examples

See how the calculator works with different scenarios.

Scenario

Running, 70 kg, 30 min.

Inputs

Activity:running

Duration:30 min

Calculation

9.8 x 70 x 0.5 = 343

Result

343 gross, 308 net

Interpretation

A standard training-day burn.

Understanding Your Result

Your Result: Session Score: 80/100

Typical range: Untrained ~30-40, good 40-52, excellent 52+ (men, lower for women); 1 MET = 3.5 ml/kg/min.

What This Means

The output converts test performances or body metrics into VO2max, METs and an age-aware fitness rating.

Why It Matters

VO2max is the strongest single fitness marker — tracking it shows whether training actually builds the engine.

Professional Interpretation

Coaches test every 8-12 weeks identically and prescribe intervals from the velocity or HR at VO2max.

Estimate vs lab

Masks, treadmills and gas analyzers define truth; field tests approximate it within ~10% — plenty for training.

Rating context

Age and sex grading matters: 45 at 55 beats 45 at 25 relatively. Simplified bands are noted as such.

Recommendations

•Test identically each cycle
•Pair intervals with Zone 2 base
•Allow full effort only when fresh
•Track METs alongside VO2max

Educational Content

Introduction

This calculator estimates aerobic power from field tests or simple body metrics.

Concept Explanation

Oxygen use per kilo predicts endurance; validated equations recover it from performances you can measure anywhere.

Applications

▸Fitness benchmarking

▸Training zones

▸Interval prescription

▸Progress tracking

▸Fat-loss planning

▸Return-to-play checks

Benefits

•Lab-free estimates
•Validated equations
•MET conversions
•Fitness ratings
•0-100 aerobic score

Limitations

•~10% estimate error
•Effort-dependent tests
•Simplified age grading
•No threshold modeling
•Single-test snapshot

Best Practices

•Test fresh and fueled
•Reuse the same course
•Calibrate HR devices
•Retest every 8-12 weeks
•Log conditions

Common Misconceptions

Myth: VO2max is everything.

Truth: It is the engine, but economy and thresholds decide races. Train all three.

Myth: You cannot raise it much.

Truth: Beginners gain 10-20% in months; even veterans nudge it with focused blocks.

Myth: Afterburn melts fat.

Truth: EPOC adds 5-15% atop session burn — real but small next to diet and volume.

Practical Tips

•Warm up 10-15 minutes before tests
•Pace Cooper evenly — no sprint start
•Walk the Rockport briskly, do not run
•Count beep shuttles honestly
•Test morning-fresh, not post-leg-day
•Record weather; heat costs meters

Common Mistakes

Sprint-starting the Cooper

Going out hard spikes lactate; even pacing adds 100+ meters.

Testing fatigued

Post-interval legs test recovery, not fitness. Separate by 48+ hours.

Ignoring the course

Hills and wind corrupt distance tests. Flat, calm, measured only.

One test, one verdict

Single tests carry ~10% error. Confirm with a retest before overhauling training.

Chasing VO2max only

Threshold and economy work raise performance without moving VO2max a point.

Counting afterburn twice

Trackers already include EPOC drift; adding calculator afterburn double-counts.

Assumptions

This calculator makes the following assumptions to provide estimates:

Maximal honest effort: Performance tests assume true full effort to failure or distance.

Flat calm conditions: Wind, hills and heat are assumed negligible.

Healthy adult: Cardiac symptoms override testing — get clearance first.

Working monitor: HR-based methods assume accurate chest-strap readings.

Steady body weight: Weight-based equations use current morning weight.

Limitations

Be aware of these limitations when using this calculator:

~10% error band: Field estimates never match metabolic carts exactly.

Effort dependence: Sandbagged tests produce sandbagged numbers.

Simplified grading: Age/sex ratings here are bands, not clinical norms.

No economy data: Two equal VO2max athletes can race minutes apart.

Snapshot only: One test cannot show the fitness trend — retest.

Frequently Asked Questions

Answers to common questions about this calculator.

What is VO2 max?

Maximum oxygen your body can use during hard exercise, in ml/kg/min. Higher means a bigger aerobic engine — elite endurance athletes exceed 70, untrained adults sit near 30-40.

How is VO2 max estimated without a lab?

Field tests (Cooper run, Rockport walk, beep test) and ratio formulas predict lab values within ~10%. This calculator uses validated published equations.

What is a good VO2 max?

Age- and sex-graded: for a 35-year-old man ~44+ is good, for a woman ~38+. Average untrained adults land near 35 (men) and 30 (women).

Can I improve my VO2 max?

Yes — 10-20% in 8-12 weeks via 2 interval sessions plus Zone 2 base weekly. Beginners improve fastest; elites fight for single points.

What is the Cooper test?

Cover maximum distance in 12 minutes; VO2max = (meters - 504.9) / 44.73. Needs full effort and a measured flat course.

What is the Rockport walking test?

Walk one mile as fast as possible, recording time and ending heart rate; a formula with weight, age and sex estimates VO2max. Ideal for beginners.

What is a MET?

Metabolic equivalent: 1 MET is resting burn (~3.5 ml/kg/min). Running at 10 METs uses ten times resting energy.

How do METs convert to calories?

Calories = METs x weight (kg) x hours. An 8-MET activity for a 70 kg person burns ~560 kcal hourly.

What is EPOC (afterburn)?

Extra oxygen (and calories) consumed repaying exercise debt: ~7% of session burn after steady cardio, ~12-15% after hard intervals.

Does afterburn matter for fat loss?

Modestly — 30-60 kcal after typical sessions. Training volume and diet dominate; treat afterburn as a bonus, not a plan.

What is the beep test?

Shuttle runs at rising speeds until failure; final level converts to VO2max via the Leger equation. A team-sport staple.

Why does VO2 max fall with age?

About 1% yearly past 30 from lower max heart rate and muscle mass. Lifelong intervals halve the decline.

How often should I test?

Every 8-12 weeks under similar conditions. More often just measures noise and fatigue, not fitness.

Do I need max effort for estimates?

Cooper, beep and Rockport need honest full efforts; ratio and questionnaire methods trade some accuracy for zero suffering.

Related Calculators

Explore more calculators related to this topic.

Related Guides

Deepen your understanding with these educational resources.

Getting Started with Strength Training

Progressive overload, volume landmarks and recovery basics.

Cardio Training Essentials

Zones, VO2 max and weekly aerobic volume that actually moves fitness.

Nutrition for Active People

Protein, calories and hydration to support training and recovery.

Understanding Recovery

Sleep, rest days and deloads that turn training into adaptation.

Glossary

Technical terms used in mortgage calculations explained in plain language.

VO2 max: Ceiling of oxygen uptake; the headline number of aerobic fitness.
MET: Resting-metabolism multiple; 1 MET = 3.5 ml/kg/min.
Cooper test: 12-minute max-distance run predicting VO2max.
Rockport test: One-mile fast walk with HR for VO2max estimation.
Beep test: Progressive shuttle-run test scored by final level.
Leger equation: Beep-test-to-VO2max formula using speed and age.
Uth ratio: VO2max ≈ 15.3 x (max HR / resting HR).
EPOC: Excess post-exercise oxygen consumption; the afterburn.
Functional capacity: MET level describing what daily life demands you can meet.
Lactate threshold: ~80-90% of VO2max; fastest sustainable hour effort.
ACSM cycling equation: VO2 = 7 + 10.8 x watts / kg for leg ergometry.
Non-exercise model: VO2max predicted from age, BMI and activity (Jackson).

Authoritative References

Trusted sources and standards referenced by this calculator.

ACSM — Exercise guidance and resources Cooper Institute — Fitness testing resources American Heart Association — Fitness resources CDC — Physical activity guidelines NIH — Exercise and health information AtlasCalcs — Health resources

Applicable Standards

ACSM Guidelines for Exercise Testing and PrescriptionCooper 12-minute run test protocol (1968)AHA/ACSM exercise testing methodology

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Page Information

Last Updated:

2026-09-16

Version:

2.0.0

References:

License:

Free to use for educational and professional purposes.