THOPTER

Drone Tools & Calculators

Free, practical tools for every flight — estimate flight time and range, plan coverage and photo-mapping missions, check field of view and payload, and run the numbers before you take off.

Drone Flight Time Calculator

Estimate how long your drone can stay airborne from its battery capacity, average current draw, and the percentage of the pack you safely use — a quick endurance figure for planning missions

LiPo Voltage Calculator

Turn a pack's cell count into its nominal, fully charged, and storage voltages — check what your charger should read and store batteries at the level that keeps them healthy

Drone Range Calculator

Estimate how far your drone can travel from its cruise speed and flight time — a straight-line range figure, with a reminder to halve it for out-and-back missions

Ground Sampling Distance Calculator

Work out the ground sampling distance of a survey from your sensor width, altitude, focal length, and image width — the real-world size of a pixel and the headline resolution of a map

Battery Charge Time Calculator

Estimate how long a pack takes to charge from its capacity and your charger's output current, including a 10% overhead for the constant-voltage tail — plan your turnaround between flights

Drone Coverage Calculator

Estimate the area a single battery can map or spray from your flight time, ground speed, and swath width — a best-case hectares-per-battery figure for mapping and agricultural missions