Lightning Distance Calculator - Online Count Thunder to Flash
Tap when you see lightning, tap again when you hear thunder. Calculates how far away the storm is in miles/km. Important outdoor safety tool.
UD5 Toolkit
Tap when you see lightning, tap again when you hear thunder. Calculates how far away the storm is in miles/km. Important outdoor safety tool.
Enter any two variables (speed, distance, time) and get the third. Supports mph, km/h, m/s and multiple units. Practical for runners and drivers.
Calculate projector throw distance or screen image size based on throw ratio. Visualize setup. Essential for home theater planning. Local.
Find the optimal TV size for your room or the best viewing distance based on screen size and resolution (1080p, 4K, 8K). Simple THX/SMPTE reference.
Record shot distances for each club and see averages. Identify gaps in your bag. Local storage.
Enter nozzle type and surface area to get optimal spray distance, sweep speed, and estimated cans needed. Prevent runs and drips.
Compute the Euclidean distance between two points in 2D or 3D space. Also shows midpoint. Quick geometry helper.
Convert between all major length units: meter, kilometer, mile, yard, foot, inch, and more. Instant results in a clean interface. No registration.