Avion Calc
Flight Time, FDP & Time Arithmetic Calculator
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Avion Calc: Time Calculator - Time Arithmetic Calculator

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Introducing our brand-new full fledged Time Calculator! Eliminate mental math and simplify time arithmetic for pilots, crew, and productivity power users. You can now seamlessly add, subtract, multiply, divide, and calculate percentages across mixed time formats in a single equation. Whether you're working with entries like 1h 2m 1s, 1.5h, or total minutes like 120m, Avion Calc processes them effortlessly—supporting multi-step math and parentheses e.g., (4h 15m + 1h 45m) ÷ (2 + 1) = 2h 00m.

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📌

Hey Product Hunt! 👋

I'm excited to share Time Calculator in Avion Calc—a fast, modern time calculator built from the ground up for pilots, flight crew, and anyone who deals with complex time math.

❓ The Problem

If you’ve ever had to calculate total flight hours, logbook entries, or duty periods, you know how frustrating standard calculators can be. Mixing formats like 1h 30m with 1.5h or figuring out what 3h 15m − 1h 30m is usually means converting everything to total minutes in your head, doing the arithmetic, and converting it back. On a busy flight deck or during tight turnarounds, mental math is prone to errors.

💡 The Solution

Avion Calc solves this with a full-fledged, intuitive Time Calculator engine that handles mixed time formats, decimal conversions, and multi-step equations seamlessly.

🔥 Key Features:

  • Native Time Math: Effortlessly add, subtract, multiply, divide, and apply percentages directly to time values (1h + 10% = 1h 06m, 2h 15m × 3 + 45m = 7h 30m).

  • Flexible Formatting: Mix expressions like 1h 2m 1s, 1.5h, and 120m in a single equation.

  • Dual Output (HH:MM & Decimal): Get instant dual-format results (07:45 and 7.75 hrs) simultaneously for flight logbooks and payroll reporting.

  • Flight Deck Utilities: Built-in Flight Duty Period (FDP) and Duty Period tracking with custom buffer offsets (EASA / OM-A compliant).

  • Cockpit Ready: High-contrast, dark-mode-optimized UI designed for low-light cockpits and fast, one-handed operation. Works 100% offline.

Whether you're managing flight logs, tracking duty days, or just looking for a better way to do time arithmetic, Avion Calc makes time math effortless.

We’d love to hear your feedback, thoughts, and feature suggestions!

Thank you for checking us out! 🙌