Fitness Calculator
What Breaks a Fast? – Complete Food & Drink Guide
Search 200+ foods, drinks, and supplements to find out if they break your fast. Get personalized verdicts based on your fasting goals.
Fitness Tools and Calculators
Calculators and interactive tools, from strength standards to treadmill finders. The full list is on the calculators page.
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Latest in Fitness Tools and Calculators: page 2
Everything filed under Fitness Tools and Calculators, newest first.
Fitness Calculator
Autophagy Calculator – When Does Autophagy Start?
Calculate when your body enters autophagy based on your unique profile. Discover your personalized fasting timeline for cellular repair.
Fitness Calculator
Treadmill Incline Converter
Convert treadmill incline between percentage grade and degrees, and see what a given incline actually costs you as a flat-equivalent running pace.
Fitness Calculator
12-3-30 Calorie Calculator
Twelve percent incline, three miles an hour, thirty minutes. See what 12-3-30 burns at your body weight, and how much of it the incline is doing.
Fitness Calculator
Advanced Net Carb Calculator for Keto, Low-Carb & Diabetic Diets
Enter the carbohydrate, fiber, allulose and sugar alcohols from a US, UK or EU nutrition label and get the net carbs that count toward a keto…
Fitness Calculator
Protein Absorption Calculator: How Fast Does Your Body Digest Protein?
How long the protein in a meal takes to absorb, from the food, the grams and your age.
Fitness Calculator
Dry Fasting Calculator: Estimate Your Weight Loss & Safety Risks
Dry fasting is arguably the most intense and advanced form of fasting. Unlike water fasting, it involves abstaining from both food and all liquids, including water.…
Fitness Calculator
Intermittent Fasting Weight Loss Calculator: Discover How Much You Can Lose
Last verified 6 Oct 2026 against the revised Harris-Benedict equation (Roza and Shizgal, 1984) and the 3,500-calories-per-pound rule (Wishnofsky, 1958). How your timeline is worked out…
Muscle Science
BMI Chart for Men and Women: Are You at a Healthy Weight?
If you visit a doctor, they’ll likely measure your height and weight. These numbers are then used to determine your Body Mass Index (BMI). BMI is…
Bodybuilding
Bench Press Averages for 2025: The Latest Data by Age, Weight, Gender, and Experience
It is no secret the bench press is one of the most badass exercises. Answering “How much do you bench?” with an obnoxious number has become a legit…
Fitness Calculator
Fitness Age Calculator: How Fit Are You for Your Age?
Your fitness age is the age at which a healthy person has the same aerobic fitness, or VO2max, as you. The Fitness Age Calculator estimates your…
Muscle
Melt Fat Faster: Discover Your Ideal Daily Calorie Burn (Plus Proven Strategies!)
As a 16-year gym veteran, if I got a dollar every time someone asked me, “How many calories should I burn a day to lose fat,” …
Fitness Calculator
Running Cadence Calculator
Running cadence is the number of steps you take in a minute, counting both feet. Our Running Cadence Calculator gives you a target cadence and a…
Fitness Calculator
Nutrient Timing Calculator
Our Nutrient Timing Calculator takes your weight and your training session and gives you the protein and carbohydrate doses the International Society of Sports Nutrition recommends…
Fitness Calculator
Weight Loss Percentage Calculator
Weight loss percentage is the weight you have lost as a share of your starting weight: start minus current, divided by start, times 100. Lose 15…
Fitness Calculator
Treadmill Pace Calculator & Conversion Charts for Effective Indoor Running
Running on a treadmill can feel different from outdoor running, but with the right tools, you can ensure you’re hitting the same training intensity. Use our…
Fitness Calculator
Vegan Protein Calculator: Discover Your Optimal Daily Protein Goals
Vegan protein calculator: your daily protein from your weight and goal, the RDA minimum, the vegan athlete range and what eight plant foods supply.
Fitness Calculator
Free Metabolic Age Calculator
Metabolic age compares the calories your body burns at rest with the average for people of your sex and size at each age. Our Metabolic Age…
Fitness Calculator
Beef Protein Calculator
Learn the nutritional content of your favorite beef dishes with our Beef Protein Calculator. Whether you’re a fitness enthusiast, a nutrition expert, or simply aiming to…