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Calculate accurate flight times for your drone based on real-world conditions including wind, temperature, altitude, and terrain.
Drone Flight Calculator (droneflightcalc.com) is a free flight-planning tool for consumer, prosumer and enterprise drone pilots. Enter your drone, battery and conditions, and get a flight-time estimate that accounts for real-world wind, temperature, humidity, altitude and terrain — plus pre-flight checklists by regulator and a database of 440+ drone specifications.
The site is built and operated by webuildstuff.io, an independent maker of free, focused calculators and tools (“Building solutions for users”). It is not affiliated with any drone manufacturer or aviation regulator.
Every estimate is physics-based: propeller scaling with air density, temperature-dependent battery efficiency, wind profiles and turbulence are all computed from published formulas with fully visible constants. Pilot-facing values round down rather than up, and manufacturer specifications are used exactly as published — no hidden safety margins or optimistic efficiency assumptions are ever baked in silently. The formulas and their limits are documented in the learning library.
Estimates are informational. Always follow your manufacturer's official performance data and your regulator's rules for operational decisions.
Questions, corrections, or a drone you'd like added to the database? The fastest path is the contact page, or email us directly:
support@droneflightcalc.com