Geography
Estimate spring/neap tide forcing and lunar-distance amplification with a transparent offline planning model.
tide-and-lunar-distance-predictorMath & Numbers
Calculate active, reactive, and apparent power for a balanced three-phase system: S=√3·U·I, P=√3·U·I·cosφ, Q=√3·U·I·sinφ. Also returns the power-factor angle φ and verifies the power triangle.
three-phase-power-calculatorMedia
Convert a selected TIFF page to verified 16-bit-per-channel grayscale, RGB, or RGBA PNG.
tiff-to-16bit-pngMath & Numbers
Reflect an impedance through an ideal transformer: Z' = a²·Z, where a = N₁/N₂. Supports secondary→primary and primary→secondary directions; a can be given directly or derived from N₁/N₂. Also returns admittance Y and reflected admittance.
transformer-impedance-transferMath & Numbers
Ideal transformer ratio: a = N₁/N₂ = V₁/V₂ = I₂/I₁. Given turns, voltage, or current on either side, compute a and the corresponding voltage/current on the other side; verifies V₁·I₁ = V₂·I₂.
transformer-turns-ratioMedia
Mux two audio tracks into one video in copy mode.
video-dual-audio-mergerMedia
Combine video with external audio using copy mode.
video-smart-muxMedia
Add selectable SRT subtitles without burning them in.
video-srt-softmuxGames
Classic 3×3 tic-tac-toe against a random AI, an unbeatable minimax AI, or a friend. Keeps score across rounds.
tic-tac-toeMath & Numbers
Compute torque, force, or lever arm from τ = r·F·sin(θ), with the perpendicular force component shown
torque-calculatorGeography
Estimate local tide height and upcoming high/low tides from a known reference high tide.
tide-calculatorData Visualization
Render hierarchical data as a squarified treemap where area encodes each item's share
treemap-generator