Nutrition
Food-to-Exercise Converter
See how long you need to exercise to burn off any food, personalized by bodyweight, across 8 common exercises.
Result
All eight exercises
- Jump Ropemoderate, 100–120 skips/min (15551): 11.8 MET, 434 kcal per 30 min20 min
- Running6–6.3 mph (9.7–10.1 km/h), 10 min/mile (12050): 9.3 MET, 342 kcal per 30 min25 min
- Circuit trainingvigorous, minimal rest (02040): 7.5 MET, 276 kcal per 30 min31 min
- Rowingmachine, 100–149 W (02072): 7.5 MET, 276 kcal per 30 min31 min
- Cyclinggeneral (01014): 7 MET, 257 kcal per 30 min33 min
- Swimminglaps, freestyle, slow, recreational (18240): 5.8 MET, 213 kcal per 30 min40 min
- Walking2.8–3.4 mph (4.5–5.5 km/h), level, moderate pace (17190): 3.8 MET, 140 kcal per 30 min1h 1m
- Yogahatha (02150): 2.3 MET, 85 kcal per 30 min1h 41m
Exercise duration
Minutes needed to burn off the calories — sorted fastest first.
How to use it
- Enter a food and its calorie count to see the exercise duration required to burn that many calories. Use this to build intuition about calorie density — not to plan compensatory exercise.
- The output makes one point clear: it is far easier not to eat 400 calories than to burn them. A large croissant of about 400 kcal takes a 160 lb person roughly 40 minutes of jogging at 5 mph to burn.
- Identify which foods have the highest calorie-to-satiety ratio for you — these are the most valuable foods to reduce. You do not need to eliminate them; simply reducing frequency has outsized impact.
- Do not use these burn estimates for exact calorie compensation: METs are adult averages, and fitness, efficiency and effort move real burn up or down.
- Foods with the best satiety-per-calorie ratio for most people: high-protein foods (eggs, Greek yogurt, chicken), high-fiber foods (vegetables, legumes), and high-water foods (fruits, soups). These provide more satiety per calorie than processed alternatives.
Questions people usually ask
How accurate is the calorie burn estimate?
It uses the standard MET formula which gives a reasonable estimate, but actual burn depends on fitness level, effort, and individual metabolism.
Why does body weight matter?
Heavier people burn more calories per minute at the same exercise intensity because more energy is needed to move more mass.
What are MET values?
MET (Metabolic Equivalent of Task) measures exercise intensity as a multiple of resting metabolic rate. Walking at 3 mph is about 3.8 MET and running at 6 mph about 9.3 MET in the 2024 Adult Compendium of Physical Activities.
Should I exercise just to burn off food?
Exercise has many benefits beyond calorie burn. This tool is meant for awareness and perspective, not to justify or punish eating choices.
Is this tool free and private to use?
Yes. AI Fit Hub tools are free, no-signup browser tools. Inputs stay in your browser unless you choose to share a URL.
Do these tools replace medical guidance?
No. These outputs are general fitness estimates — not medical advice.
Related calculators
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- Nutrition Macro Calculator
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- Nutrition Protein Intake Calculator
Get daily protein targets based on training level and goal.
- Nutrition Intermittent Fasting Window Planner
Plan protocol-based eating and fasting windows with a 24-hour timeline and 5:2 day picker.
By goal
Use it from an agent or code
Any agent can run this calculator by URL: put the inputs in the query string and get JSON back, with the inputs that used defaults and a line to cite (add format=md for markdown). MCP clients reach it through https://aifithub.io/mcp.
In code, import the same module; it runs where you import it, with no request or key.
import { compute } from "https://aifithub.io/engines/food-to-exercise-converter.js";Input and output contract, TypeScript types and the guide for agents.