Snap Tool Suite

Free Fitness & Training Calculators

Plan the work and pace the effort — the right training pace, a race plan that builds, a weekly split, and the checklist for race day. Free and private in your browser. For general guidance, not medical advice.

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Real pace & training math Private — nothing leaves your browser Instant, no sign-up
Training for something? Dial in effort with the Running Pace Calculator, build toward race day with the Race Training Plan, then lay out the week with the Weekly Workout Planner.

Training & performance

Plan the work and pace the effort.

Running Pace Calculator

Calculate your running pace from distance and time, and convert between different pace formats.

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Race Training Plan Generator

Create a personalized training plan for your race with weekly workouts and progression.

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Weekly Workout Planner

Plan your training for each day — exercises, sets, cardio, and rest days.

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Workout Split Planner

Create and organize your training splits by muscle groups or workout styles for the week.

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Race Day Checklist

Everything for race day — night before, morning of, gear, nutrition, and recovery for any 5K to marathon. Progress saved.

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Training gear & wearables GPS watches, heart-rate straps, and the essentials. Shop on Amazon → affiliate

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Every other training planner and calculator.

Body Fat Calculator

Estimate your body fat percentage with the U.S. Navy tape method — no calipers — plus your category.

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Calorie Calculator

Your daily calories (TDEE) from the Mifflin-St Jeor formula, with targets to maintain, lose, or gain weight.

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Intermittent Fasting Calculator

Plan your intermittent fasting schedule with eating and fasting windows for your chosen protocol.

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Macro Calculator

Turn your daily calories into grams of protein, carbs, and fat — balanced, high-protein, low-carb, or keto.

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Protein Intake Calculator

Your daily protein in grams from body weight, activity & goal (maintain, build muscle, or lose fat) — with a per-meal target. Uses standard g/kg guidelines.

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Sleep Calculator

Find your ideal bedtime to wake refreshed — calculate backward from your wake time for 7–9 hours with sleep cycle timing.

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Water Intake Calculator

Your daily water intake goal based on body weight, activity level, and climate — stay hydrated.

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Calories Burned Calculator

Estimate the calories you burn in an activity from its MET value, your weight, and the minutes.

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Personal Trainer Rate Calculator

Find the per-session rate to charge to hit your income goal after expenses and realistic weeks worked.

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More Fitness gear & guides Top-rated picks to go with these fitness tools. Shop on Amazon → affiliate

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