Conversion Calculators

Health Metrics

• Blood Sugar Converter - Glucose: mmol/L to mg/dl, mg/dl to mmol/L
• Cholesterol Converter - TC, HDL, LDL, TG: mmol/L to mg/dl, mg/dl to mmol/L
• A1C to EAG Converter - Convert A1C to eAG (Estimated Average Glucose) in mg/dl or mmol/L

Date, Time Converters and More

• Days Calculator - add or subtract calendar days or business days to date.
• Date Time Difference Calculator - duration between two dates and, optionally, time.
• Date Difference Calculator - how long between dates, years down to seconds.
• Convert Date to Day Number in Year - today/tomorrow day number, any other date.
• Convert Day Number to Date - every day has a number, see matching date
• Convert Days to Age Calculator - number of days to years, months and day...
• Age to Days Calculator - age on date in number of days since birth
• Convert Military 24 Hour Time to 12 Hour Time
• Convert Date to Roman Numeral
• Translate Roman Number to Base 10 Number
• Convert Number to Roman Numeral
• Counting Time Calculator
• Days to Harvest Calculator
• Vegetable Planting Calendar
• Garden Plant Date Calculator
• Friday the Thirteenth Date Checker
• Friday the Thirteenth Year Calendar
• Translate TV Time to Lifespan Reduction
• Convert Earth Age to Other Planet Age
• Convert Dog's Chronological Age to Human Years
• Convert Age on Date to Birth Date
• Convert Human Age to Dog Age
• Convert Human Age to Cat Age

Date Calendars

Generate a day of the week calendar, from Sunday to Saturday, for any year, including the current year 2025!

• Sunday Calendar for any year
• Monday Calendar for any year
• Tuesday Calendar for any year
• Wednesday Calendar for any year
• Thursday Calendar for any year
• Friday Calendar for any year
• Saturday Calendar for any year

Random Numbers ...

• Guess Randomly Generated Number - Set level easy to hard
• Daily fortune cookie or maxim - Randomly selected from repository!