24-Hour Time Calculator

Quickly add, subtract, or score 24-hour (military) time. Designed for pilots, dispatchers, and anyone who needs precise time calculations.

24-Hour Time Calculator makes adding, subtracting, and scoring 24-hour (military) time fast and effortless.

Whether you're a pilot, dispatcher, shift worker, or anyone managing schedules and logs, this app is designed for you. Enter start and end times, calculate time differences, or quickly solve 24-hour time math for any need.

Key Features: • Instantly add or subtract 24-hour (military) time • Quickly calculate time differences for shifts, schedules, or logs • Persistent Time: Easily save and reuse a constant value - no more retyping the same number again and again • Automatic Clock Wrapping: Results always stay within 24-hour format - no more confusing answers like "25:00" • Simple, modern interface - no clutter, no ads • Designed for aviation, logistics, transportation, shift work, and anyone who needs accurate time math • Works great with typical flight plan and scheduling formats

How It Works:

1. Enter your starting time. (Example: "13:15" for 1:15 PM.)
2. Add or subtract the desired value. (Example: add "2:50" to get "16:05".)
3. Use the persistent time feature to save a commonly used number (like an offset or fixed block time), so you never have to re-enter it.
4. All results are automatically wrapped to the 24-hour clock - no more odd answers like "25:00".

Stop struggling with mental math or spreadsheets - 24-Hour Time Calculator helps you get the job done with confidence, every time.