Calculate date differences, add or subtract days/months/years, and count workdays between dates.
Omni Calculator & Converter
Financial percentages, tips, age & dates, and universal unit converter
Date Calculator
Overview
Add or subtract days from a chosen date, or compute the difference between two dates with optional business-day counting (Monday–Friday). A practical tool for managers and employees who need to calculate deadlines, project durations, and official work periods with confidence.
Key features
- •Add or subtract days from any reference date
- •Compute the difference between two dates in years, months, days
- •Business-days-only mode (Monday–Friday)
- •Respects public holidays (configurable list)
- •Detailed results with precise calendar jumps
How to use
- 1Choose the Add/Subtract tab or the Date Difference tab.
- 2Pick the reference date from the calendar.
- 3Enter the number of days or duration to compute.
- 4Toggle business-days mode if you want weekdays only.
- 5Review the result in the output card.