Max-Age Cache Calculator

Use this Max-Age Cache Calculator to convert structured time (years, days, hours, minutes) into max-age seconds for HTTP caching. Get instant breakdowns and header examples.

Features:

Input Options

• Dual input methods: Enter raw seconds or use structured inputs for years, days, hours, and minutes.
• Instant conversion: All inputs update the calculated max-age value and HTTP cache header in real time.

Output and Layout

• Readable output: See a breakdown of your input in days, hours, minutes, and seconds.
• Header-ready: Includes a complete Cache-Control: public, max-age=... header line for copy-paste use.

Controls

• Copy Output: Copies the full breakdown and header.
• Clear All: Resets everything instantly.
• Recalculate: Forces manual refresh of the result (optional, input is auto-reactive).

How to Use the Max-Age Cache Calculator:

1. Enter a value one of two ways:
   • Use the “Max-Age (in seconds)” field (e.g. 604800)
   • Or use the Years / Days / Hours / Minutes input boxes
2. View the live result in the Cache Duration box:
   • Human-readable time breakdown
   • Complete example HTTP header for caching
3. Copy Output if needed using the button below the output.
4. Click “Clear All” to reset everything and start fresh.

Example:

Duration Input:

Years: 1
Days: 0
Hours: 0
Minutes: 0

Output:

Max-Age: 31536000 seconds
= 365 day(s), 0 hour(s), 0 minute(s), 0 second(s)

Example Header:
Cache-Control: public, max-age=31536000

Days From Now Calculator Table:

The Max-Age Cache Calculator Table helps you understand what each max-age value actually means in seconds, minutes, hours, and days. Whether you’re setting cache headers in Cache-Control or just trying to decode what max-age=31536000 really represents, this table gives you an instant reference. Each row breaks down common max-age durations into readable timeframes, along with example use cases like static assets, API responses, or HTML pages. It’s a quick way to make smarter caching decisions and avoid guessing how long “2592000 seconds” really is.

Common Use Cases:

The Max-Age Tool calculates cache duration from seconds or time units like years, days, hours, and minutes. It’s ideal for setting HTTP cache-control headers, optimizing website caching strategies, defining expiration times for static assets, managing cache settings for servers and CDNs, and ensuring accurate control over cache lifetimes.

Useful Tools & Suggestions: