Time Calculator for Pilots

Time Calculator for Pilots is a duration-aware calculator built for pilots, flight crew, and anyone who works in hours, minutes, and seconds. Add flight legs, subtract crew-rest windows, multiply block times, and divide totals — no mental math, no spreadsheets, no unit conversions.

FEATURES

• Duration arithmetic — add, subtract, multiply, and divide times in hours:minutes:seconds.
• Live preview — the running result updates underneath your expression as you type. Press = when you're ready to commit it to history.
• Dual display — every entry and result shows two ways at once: the human-readable form (for example, "2 hrs 45 mins") and the clock form ("02:45:00"). Read the one you need; ignore the other.
• Tap to copy — tap the human side of a result to copy "2 hrs 45 mins" to the clipboard. Tap the clock side to copy "02:45:00". Straight into your logbook, dispatch notes, or chat.
• Session history — scroll back through every entry, operator, and result from the current session in a dedicated panel. Tap any past result to copy it.
• Mixed operands — multiply a duration by a scalar (2:30 × 2 = 5:00:00), apply a fractional scalar for time-and-a-half math (3:00 × 1.5 = 4:30:00), divide a duration by a scalar (5:00 ÷ 4 = 01:15:00), and the original iOS app's duration-on-duration convention is preserved (2:00 × 2:00 = 4 mins).
• Negative durations — subtract a longer time from a shorter one and the result keeps its sign instead of erroring. Useful when a crew rest window comes up short.
• Landscape support — rotate for more room on tablets and larger phones.
• Offline — works with no internet connection. No accounts, no trackers, nothing collected, nothing sent.
• Built-in help — short written explanations for entering time, clearing entries, addition, subtraction, multiplication, division, and clipboard copy. Always available from the menu in the top-right corner.
• Material 3 design — clean, modern, and follows your device's dynamic color scheme on Android 12+.

TYPICAL USES

• Navigation logs — "2:30 + 0:45 + 1:15 = ?"
• Crew rest windows — subtract one time from another to see how much rest is left.
• Flight-hour tracking — roll up block times against 8-hour, 30-day, or annual limits.
• Time-and-a-half pay math — multiply a shift duration by 1.5 (or any fractional scalar).
• Any job that involves timecards, shifts, or stopwatch math.

No sign-up. No subscription. Just a calculator that understands time.