How to Calculate Date Differences
Date Difference
Input Format
Enter two dates on separate lines or separated by a pipe: 2026-01-01 | 2026-07-03. Supports ISO 8601, Unix timestamps, and readable date strings.
Date Difference Calculator
Find the duration between two dates. Enter start and end dates on separate lines or separated by |, then click Run.
- Runs entirely in your browser
- No data stored or sent to a server
- Free forever — no signup
- Instant conversion
Input and Output
Use the interactive encoder and decoder on this page to process your text.