DataWorkbench
All Tools

All Tools (41)

01JSON Formatter & Validator02JSON Path Builder03JWT Decoder04Base64 Encode / Decode05URL Encode / Decode06Unix Timestamp Converter07SQL Formatter08CSV ↔ JSON Converter09CSV Duplicate Processor10Markdown → HTML Converter11Regex Tester12HTML Formatter / Minifier13Character & Byte Counter14Japanese Era ↔ Gregorian Converter15Katakana ↔ Hiragana Converter16Japan Postal Code Lookup17Character Encoding Inspector (UTF-8)18XML ↔ JSON Converter19YAML ↔ JSON Converter20HTML Entity Encoder / Decoder21SQL IN Clause Generator22Date Difference Calculator23Japan Phone Number Formatter24CSV Column Extractor25CSV Merger26Text / JSON Diff Viewer27SQL INSERT Generator28SQL Function Reference29SQL Query Analyzer30Business Day Calculator31Power Query Code Generator32Japan Address Splitter33UUID Generator34Hash Generator (SHA-256 / SHA-512)35Number Base Converter (2 / 8 / 10 / 16)36Cron Expression Parser37Color Code Converter (HEX / RGB / HSL)38QR Code Generator39Image Resizer40Image Compressor41PDF Merger

History and favorites reset automatically after 30 days of inactivity.

date difference days weeks months calculate period

Date Difference Calculator

Select two dates to see the difference in days, weeks, months, and years. Handy for checking contract periods or counting down to deadlines.

Start date
End date

USAGE

3 simple steps

  1. 1Select the start date and end date
  2. 2Click the Calculate button
  3. 3The difference in days, weeks, months, and years is displayed

FAQ

Frequently Asked Questions

Q. Can I calculate even if the end date is before the start date?

A. Yes. The order is automatically detected and calculated correctly.

Q. Can it calculate across months and years?

A. Yes. Calculations are based on actual calendar dates including leap years. Days, weeks, months, and years are all shown together.

Related Tools

Business Day CalculatorJapanese Era ↔ Gregorian ConverterUnix Timestamp Converter