BlockTime - Logbook Calculator

The time calculator built for the flight deck.


Designed as an infinite scratchpad for flight and duty time, BlockTime keeps you focused with a distraction-free, ultra-minimalist interface optimized for cockpit readability — day or night.

Why pilots use BlockTime:

✈️ True HH:MM math — Add and subtract times with automatic 60-minute rollovers. No more mental conversions.

⌨️ ATM-style input — Type digits right-to-left, no colon key needed. 4 → 1 → 5 becomes 04:15. Fast and reliable in turbulence.

📋 Live history feed — Every calculation is saved with its formula. Tap any past result to drop it back into the calculator and keep going.

🔄 Cumulative workflow — Press = and your total stays on screen. Immediately add the next leg of your trip.

🌙 Night-flight friendly — High-contrast dark and light themes for any lighting condition.

🚫 Zero clutter — No ads, no menus, no tabs. One screen. One job, done well.

Audit your logbook in seconds. Tally duty time, block time, and rest periods without the math errors.

Download Block Time and make your logbook add up.