Free Date & Time Calculators
20 date and time tools. Fast, accurate, and completely free.
Categories
🧮 Date Calculators 5 tools 🎂 Age Calculators 5 tools ⏳ Countdown Tools 5 tools 📅 Date Reference 5 tools
Popular Tools
📊
Date Difference Days between two dates
🎂 Age Calculator Calculate exact age
🎄 Christmas Countdown Days until Christmas
➕ Add Days Add days to find a date
💼 Business Days Count weekdays between dates
🔧 Unix Timestamp Date to timestamp converter
About DateMath
DateMath provides 20 free online date and time calculator tools. All calculations use JavaScript's native Date API for accuracy, properly handling leap years, varying month lengths, and time zones.
Why Use DateMath?
- Accurate: Handles leap years, month variations, and time zones
- 20 Tools: Calculators, age tools, countdowns, and references
- Live Calculations: Instant results as you enter dates
- Free: No registration, no fees, unlimited use
- Mobile-Friendly: Works on any device