Exercise Tools
See all-in-one suite of 8 fitness calculators for steps, running pace, cycling, swimming, MET calorie burning, 1RM lifting, and VO2 Max.
Last updated: June 11, 2026
Shared Profile
Save your core stats here to auto-populate all relevant calculators instantly.
Steps to Calories
Convert daily steps to distance and calories burned.
Calories Burned
Estimated Distance
Approx. Time
Exercise Tools — No Uploads Required
A professional Online Exercise Calculator Suite containing 8 fitness and performance assessment tools. The suite features a shared user profile bar to sync height, weight, gender, and age instantly across all calculators, facilitating smooth metabolic estimates. Sub-calculators include: Steps to Calories, Running Pace with split timing sheets, Walking Calories (including speed and incline parameters), Cycling Calories, Swimming Calories, Workout Burn (activity MET matching database), One Rep Max (Epley and Brzycki equations), and VO2 Max (Rockport Walk and Cooper 12-Min tests). Calculated locally in-browser.
Why This Tool Exists
What makes this useful — and why I built it this way.
No More Swapping Tools: Compare cycling, swimming, running, and steps in one unified tab dashboard.
Save Time: Shared stats sync inputs immediately across all formulas.
Privacy Focused: Your sensitive health stats never leave your computer.
When You'd Use This
Real situations where this tool saves the day.
Workout Planning: Estimate calorie burn from custom workout lists.
Race Preparation: Project run pace splits for marathons and 5ks.
Strength Training: Map 1-rep maximum lift zones for physical training.
Using Exercise Tools
It's straightforward — here's how it works.
Select a fitness calculator from the tab dashboard.
Set up weight and gender details in the top Shared Profile bar.
Adjust specific parameters like exercise duration, steps, speeds, or repetitions.
Check split timings, 1RM logs, and cardiovascular metrics instantly, and copy summaries to clipboard.
How The Numbers Work
The formulas behind the calculations — for transparency.
Metabolic Equivalent of Task (MET) Calorie Burn
Computes energy expenditure for physical exercises using standardized MET values representing the oxygen cost of physical activity.
One Rep Max (1RM) - Epley Equation
Predicts maximum lifting capacity from sub-maximal weight lifting repetitions. Safe and accurate for repetitions under 10.
VO2 Max - Rockport Walk Test
Estimates cardiorespiratory fitness based on a 1-mile walking time, weight, age, gender (male = 1, female = 0), and post-exercise heart rate.
VO2 Max - Cooper 12-Minute Run Test
Estimates maximum oxygen consumption (VO2 Max) using distance covered during a continuous 12-minute run.
Questions People Ask
Honest answers about how this works.
Is my performance or physiological data stored?
Great question. No. All calculation logic runs inside the client-side JavaScript engine. No biometric values are sent to external servers.
How are exercise calorie burns calculated?
Honestly? We use MET (Metabolic Equivalent of Task) coefficients mapped against the duration of the activity and your body weight. The formula used is: Calories = MET * 3.5 * weight (kg) / 200 * duration (minutes).
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