Date Calculator
Utility
Calculate date differences, business days, age, date offsets and work hours with custom workweeks, holiday calendars and CSV exports.
Free Online Calculators for Dates, Work Hours and Bills
Plan a deadline, check a timesheet or settle a shared bill. Start with the task below; each calculator opens directly in your browser.
Choose a tool
Tab Split
Tool
Split a bill fairly when people ordered different things, with tax and tip shared out properly.
Craft Calculators
Tool · New
8 free craft calculators: yarn for any crochet project, granny square blankets, yarn swaps, resin, candle wax, 3D print costs and handmade pricing.
Fitness Race Planner
Tool · New
Plan a fitness race run by run and station by station: predict your finish time, or set a goal and get the target split for every leg. HYROX presets included.
Date and time calculators
- Business Days Calculator
Count working days with a custom workweek, regional holidays and your own excluded dates.
- Add or Subtract Dates
Move a date forward or backward by years, months, weeks, calendar days or business days.
- Age Calculator
Calculate age on any date in complete years, months and days, plus total days lived.
- Work Hours Calculator
Build a timesheet with overnight shifts, unpaid breaks and decimal-hour totals. Export your rows as CSV.
- Decimal Hours Converter
Convert hours, minutes and seconds to decimal hours, or turn decimal hours back into clock time.
Which tool should I use?
Calendar days or business days?
Use Date Calculator for elapsed calendar days. Choose Business Days Calculator when weekends and holidays should be excluded, and check the workweek and holiday settings for your situation.
Clock time or decimal hours?
Use Work Hours Calculator to total shifts and breaks. Use Decimal Hours Converter to change a duration such as 1 hour 30 minutes into 1.5 hours.
Splitting a shared bill
Open Tab Split to work out what each person owes. Check the bill amounts and split before settling up.
Making and selling crafts
Open Craft Calculators for yarn amounts, granny square layouts, resin and candle wax, 3D print costs and a selling price that covers fees.
Pacing a fitness race
Open Fitness Race Planner to predict a finish time from your run pace and station times, or to turn a goal time into target splits. HYROX singles and doubles are ready-made presets.