Health & Fitness

BMI, BMR/TDEE, body fat, water intake and wellbeing calculators. All 4 tools below run 100% in your browser — free, instant and private.

Calculate calories burned at rest and daily needs by activity level.

Get a personalized daily water intake target from weight and activity.

Estimate body fat percentage with the U.S. Navy tape-measure method.

Find the best bedtime or wake time based on 90-minute sleep cycles.

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Count, convert, clean, encode and transform text instantly.

Compress, resize and convert images privately — files never leave your device.

Percentage, age, BMI, loans, interest, dates and more with step-by-step results.

Units, colors, number bases, Roman numerals and Morse code.