Online Date Calculator

Pick a start date and add or subtract days, weeks or months to find the resulting calendar date and weekday — handy for deadlines, due dates and planning.

Tool Features

• Add or subtract days, weeks and months
• Show the resulting date and weekday
• Handles month-end rollover correctly
• Responsive design for mobile and desktop
• No registration or software installation

Common Usage

• Find a project or bill due date
• Plan events by counting forward weeks
• Check expiry dates from a start point
• Quick scheduling and travel planning