13 free, science-based calculators to plan your transformation. No signup required to use them. Built on the same formulas registered dietitians and certified trainers use every day.
The most popular calculator. Enter your numbers and get an exact goal date, daily calorie target, and a week-by-week trajectory based on the Mifflin-St Jeor equation.
Try the CalculatorWhy use five calculators when you can use one? Enter your numbers once and get your TDEE, weight loss timeline, calorie deficit, calorie surplus, and macros — all on a single page.
Try the All-in-OneBody fat, protein, calories burned, 1RM, heart rate zones, and recomp — six calculators, one page. Enter your numbers once and get everything.
Try the All-in-OneSee your exact goal date, daily calorie target, and weekly trajectory.
Try it LiveYour total daily energy expenditure - how many calories you actually burn.
Try it LiveHow big a deficit you need for your target weekly loss rate.
Try it LiveProtein, carbs, and fat targets dialed to your goal and body type.
Try it LiveHow big a surplus you need to build muscle at your target weekly gain rate.
Try itYour one-rep max across all major lifts - by Epley, Brzycki, and Lombardi.
Try it LiveYour five training zones for cardio efficiency and fat-burn targeting.
Try it LiveLose fat and gain muscle simultaneously - the math, the timeline, the protocol.
Try itThese programs are how you actually get there.
Daily workouts, meal framework, and a clear plan to build the habit that hits your goal date.
Direct guidance from certified trainers. Custom programming built around your numbers, goals, and schedule.
500+ guides covering every workout style, demographic, and goal. No signup, no paywall - just read.
Corporate wellness available online or in person. Increase engagement, reduce absenteeism.