Date Calculator
Planning a project or scheduling an event? Easily calculate future or past dates by adding or subtracting days, weeks, or months.
# About This Tool
A Date Calculator adds or subtracts a specific duration (years, months, weeks, days) to a starting date to determine the resulting date.
Planning a project or scheduling an event? Easily calculate future or past dates by adding or subtracting days, weeks, or months.
# How Does Date Calculator Work?
- 1Select a Start Date.
- 2Choose an operation: Add or Subtract.
- 3Enter the duration (e.g., 30 days, 2 weeks).
- 4View the Resulting Date and the day of the week.
# Formula Used
`New Date = Start Date +/- Duration`# Who Should Use This Tool?
Calculating project deadlines.
Determining return windows for products (e.g., 30-day policy).
Finding out what day of the week a future date falls on.
# Why Use This Tool?
Privacy & Security
We prioritize your privacy. All processing for the Date Calculator occurs locally on your device. ProUtilityApp does not upload, store, or log your data, ensuring your sensitive information remains entirely under your control. Once you close the tool or perform a new task, all temporary assets are cleared from memory.
# Frequently Asked Questions
Does it include the start date?▼
Does it handle leap years?▼
What are business days?▼
This tool is actively maintained to support modern standards and evolving browser security.
Last updated: March 2025 • Free privacy-first browser tools.
- add or subtract days from date
- • date duration calculator
- • business days calculator
- • calendar date calculator