Vitamin D Calculator
Your recommended daily vitamin D by age
Vitamin D Calculator
Vitamin D supports bone health and immunity. General guidance is 400 IU/day for infants, 600 IU/day for children and adults, and 800 IU/day for those over 70. Sunlight, oily fish and fortified foods are the main sources; supplements help when sun exposure is low.
More
- Maintenance vs Deficit
- BMI Calculator
- BMR Calculator
- Body Fat Calculator
- Protein Calculator
- Water Calculator
- Macro Calculator
- Exercise Calorie Calculator
- 1RM Calculator
- Running Pace Calculator
- Intermittent Fasting Calculator
- Ideal Weight Calculator
- Waist-to-Hip Ratio Calculator
- Waist-to-Height Ratio Calculator
- Heart Rate Zone Calculator
- Steps to Calories Calculator
- Lean Body Mass Calculator
- VO₂ Max Calculator
- A1C to Glucose Calculator
- Calorie Cycling Calculator
- BAC Calculator
- Wilks Calculator
- FFMI Calculator
- Pregnancy Weight Gain Calculator
- TDEE Calculator
- Daily Sugar Intake Calculator
- Daily Fiber Intake Calculator
- Sodium & Salt Intake Calculator
- Cholesterol Ratio Calculator
- Net Carbs Calculator
- Body Surface Area Calculator
- Macro Calorie Converter
- HIIT & Tabata Timer Calculator
- Mean Arterial Pressure Calculator
- Pace Converter
- Calories to kJ Converter
- Pack-Years Calculator
- Smoking Cost Calculator
- Total Body Water Calculator
- Barbell Plate Calculator
- RPE Calculator
- Warm-Up Set Calculator
- Strength-to-Weight Ratio Calculator
- Training Volume Calculator
- 1RM Percentage Calculator
- DOTS Calculator
- Race Time Predictor
- FTP Power Zones Calculator
- Max Heart Rate Calculator
- Target Heart Rate Calculator
- Steps to Distance Calculator
- Sweat Rate Calculator
- Swim Pace Calculator
- Rowing Split Calculator
- Power-to-Weight Calculator
- Grade-Adjusted Pace Calculator
- Running Cadence Calculator
- Vertical Jump Power Calculator
- Sprint Speed Calculator
- Relative Strength Calculator
- Treadmill Pace Converter
- Watts to Calories Calculator
- Critical Swim Speed Calculator
- SWOLF Score Calculator
- Pace from Finish Time Calculator
- Stride Length Calculator
- RSI Calculator
- Run/Walk Interval Calculator
- vVO₂max Calculator
- Margaria-Kalamen Calculator
- Training Load Calculator
- ACWR Calculator
- Heart Rate Recovery Calculator
- Yards to Meters Pace Converter
- Negative Split Calculator
- VAM Climbing Speed Calculator
- Watts per Heartbeat Calculator
- Broad Jump Calculator
- Running Economy Calculator
- Carb Loading Calculator
- Grip Strength Ratio Calculator
- Jump Rope Calories Calculator
- Plank Hold Test Calculator
- Push-up Test Calculator
- Wall Sit Test Calculator
- Sit-up Test Calculator
- Sit and Reach Test Calculator
- Pull-up Test Calculator
- Burpee Test Calculator
- Cooper Test Calculator
- Harvard Step Test Calculator
- Resting Heart Rate Calculator
- Beep Test Calculator
- Dead Hang Test Calculator
- Squat Test Calculator
- Chair Stand Test Calculator
- Weight Simulator
- Plateau Analyzer
- Yo-Yo Risk Check
- Can I Eat This?
- Restaurant Calories
- Caffeine & Alcohol
- Sleep Impact
- Body Prediction
- Weekly Report