Personal Fitness
Comprehensive fitness toolkit: running pace, cycling metrics, walking tracker, heart rate zones, calories burned, and step counter.
- Running pace calculator
- Cycling metrics
- Heart rate zones
- Calories burned
Science-backed, free interactive tools for health, money, cooking, language, and more. No account required.
Comprehensive fitness toolkit: running pace, cycling metrics, walking tracker, heart rate zones, calories burned, and step counter.
Take control of your money with compound interest, loan repayment, retirement savings, and budget planning tools.
Scale recipes, convert cooking units, estimate nutrition, and master baker's percentages with our kitchen math tools.
Analyze your text: word count, reading time, readability score, syllable counter, and keyword density.
Calculate UV index risk, safe sun exposure time, SPF requirements, and vitamin D synthesis based on your location and skin type.
Estimate flight duration, fuel burn, carbon footprint, and convert between time zones for any route worldwide.
Understand tidal patterns, calculate tidal range, and learn the gravitational mechanics behind high and low tides.
The Personal Collection brings together essential everyday apps in one place. Each tool is built on evidence-based formulas: ACSM exercise guidelines for fitness, USDA standards for nutrition, and established financial math for money tools. All calculations run entirely in your browser β your data never leaves your device.