Calculators

Date Calculator - Add or Subtract Days

Add or subtract years, months, and days from any date. Calculate future dates, past dates, project deadlines, and event planning with instant results and days difference.

Part of Yoopla's 445+ free browser tools.

📅 Date Calculator Guide

Add Time: Calculate future dates by adding years, months, and days.

Subtract Time: Calculate past dates by subtracting time periods.

Use Cases: Project deadlines, age calculations, date planning, event scheduling.

Examples: Find the date 90 days from now, or what date was 6 months ago.

How to Use Date Calculator

  1. 1

    Enter a start date or use today.

  2. 2

    Choose Add or Subtract operation.

  3. 3

    Enter years, months, and days to add/subtract.

  4. 4

    View result date and total days difference.

Frequently Asked Questions

How do I calculate a date 90 days from now?

Set start date to today, choose Add, enter 0 years, 0 months, 90 days. The calculator will show the exact future date.

Can I combine years, months, and days?

Yes! You can add or subtract any combination. For example, 2 years, 3 months, and 15 days.

What date was 6 months ago?

Set start date to today, choose Subtract, enter 0 years, 6 months, 0 days to get the past date.

Share this tool

Share this tool with others

Related Tools

Explore the ecosystem around

Category: Calculators

Use this tool as your starting point, then branch into adjacent tools, topic hubs, comparisons, and free alternatives.

Related Tools

Discover other tools that work great with Date Calculator

Topic Hubs

Go deeper into pillar pages and connected workflows

Related Articles & Guides

Learn more about using tools effectively

Tool Comparisons

Compare features and choose the right tool

Popular Alternatives

Free alternatives to popular paid tools

Use Cases

Practical use cases with this tool

Best Tools Collections

Curated lists of top-rated tools

Date Calculator - Add or Subtract Days | Yoopla