Date Calculator

Date Calculator is a simple and convenient browser extension that helps you quickly calculate a future or past date. Select a starting date, enter the number of days, and instantly see the resulting calendar date and day of the week. For example: • What date will it be 92 days from today? • What date was 30 days before a selected date? • When does a 60-day or 90-day period end? • What is the deadline after a specific number of calendar days? KEY FEATURES • Calculate a date from today • Select any custom starting date • Add or subtract calendar days • Use negative numbers to calculate past dates • Quick buttons for 30, 60, 90, and 92 days • View the resulting date and day of the week • Copy the calculated date with one click • Automatic English and Russian language selection • Manual EN/RU language switch • Clean and easy-to-use interface • Instant calculations without reloading the page HOW TO USE 1. Open the extension from your browser toolbar. 2. Keep today’s date or select another starting date. 3. Enter the number of days you want to add. 4. Use a negative number if you want to calculate a date in the past. 5. View or copy the calculated date. USEFUL FOR Date Calculator can help with: • Project deadlines • Contract and renewal dates • Payment due dates • Appointment planning • Travel planning • Trial and subscription periods • Return and warranty periods • Legal or administrative timelines • Immigration and application deadlines • Medical follow-up dates • Personal events and reminders • Any calculation involving calendar days PRIVACY Date Calculator works entirely inside your browser. • No account required • No personal information collected • No browsing activity tracked • No data sent to external servers • No unnecessary browser permissions • No advertisements All date calculations are performed locally on your device. Please note: the extension calculates calendar days. If your deadline is based on business days, holidays, court rules, or another special counting method, verify the result using the applicable official rules.