Days from Today Calculator

Simply enter today's date (or leave it as default), set the quantity to 90, select "Days" as the unit, and click Calculate. The tool will show you the exact date 90 days from now, along with the day of week and other helpful metrics. For example, if today is January 1, 2025, 90 days from today would be April 1, 2025.

When you exclude today (default), the count starts from tomorrow. "+7 days" means exactly one week from tomorrow. When you include today, today counts as day 1. "+7 days" includes today in the count, so the result is 6 days from tomorrow. This is important for legal deadlines where the current day is often counted, versus project planning where work typically starts "tomorrow."

Use negative numbers in the quantity field. For example, to find what date it was 30 days ago, enter -30 in the quantity field and select "Days" as the unit. The calculator will automatically calculate backwards from today (or your chosen start date) and show you the past date.

Month calculations use calendar months, not 30-day periods. Adding 1 month to January 15 gives February 15. The calculator handles month-end dates intelligently: January 31 + 1 month = February 28 (or 29 in leap years), since February doesn't have 31 days. This ensures all results are valid calendar dates.

Yes! Pregnancy is typically calculated in weeks. From your conception date or last menstrual period (LMP), you can add 40 weeks to estimate your due date. Use the weeks mode and add 40 weeks from your LMP date. However, for comprehensive pregnancy tracking, consider using a dedicated pregnancy calculator that provides trimester information, fetal development milestones, and other pregnancy-specific details.

After calculating your date, click the "Share" button. This copies a unique URL to your clipboard that includes all your inputs (start date, quantity, mode, and include-today setting). Anyone who opens that link will see the exact same calculation. This is perfect for sharing project timelines, event dates, or deadline calculations with team members or clients.

The calculator automatically accounts for leap years. Leap years occur every 4 years (2024, 2028, etc.) and have 366 days instead of 365, with February having 29 days instead of 28. This ensures that calculations spanning February in a leap year are accurate. The leap year rule is: divisible by 4 = leap year, except years divisible by 100 are not leap years, unless they're also divisible by 400 (so 2000 was a leap year, but 1900 was not).

No. All date calculations happen entirely in your browser using client-side JavaScript. Your dates are never sent to our servers and are not stored anywhere. Your privacy is completely protected. The only data that may be collected is anonymous usage statistics (like which features are used most often) to help us improve the tool, but this never includes your actual date inputs.

Manual counting is error-prone, especially across months with different lengths, year boundaries, or leap years. This calculator eliminates counting errors, handles edge cases automatically (like month-end dates), and provides instant results with additional useful information (day of week, week count, etc.). It's especially valuable for calculating long periods (like 180 days or 6 months) where manual counting would be tedious and prone to mistakes.