The calculator converts TTL values into seconds, adds them to the issued-at UNIX timestamp, and computes an expiration point that can be compared against current time with optional clock skew tolerance.

Technical Notes

• Uses UNIX epoch seconds for token timing consistency
• Supports seconds, minutes, hours, and days TTL units
• Shows both machine and human-readable expiration formats
• Includes clock-skew aware status checks
• Useful for API auth policy and debugging workflows

Sources & References