Garden Plant Spacing Calculator - Online Grid & Row Layout
Calculate how many vegetable plants fit in a given area using square foot gardening or row spacing. Visual plant grid. Plan your spring garden.
UD5 Toolkit
Calculate how many vegetable plants fit in a given area using square foot gardening or row spacing. Visual plant grid. Plan your spring garden.
Build a proper <meta name='viewport'> tag with width, initial‑scale, and user‑scalable options. Avoid common mobile rendering issues.
Calculate how many planks you need to cover an area given plank dimensions and gap. Quick carpentry estimator. Local only.
Simulate rolling dice for board games, RPGs, and decision making. Choose number of dice and faces. Fun, lightweight, and no download required.
Select your OS, IDE, and programming language to generate a complete .gitignore file. No typing required.
An on‑screen ruler that measures in pixels, centimeters, and inches. Drag to resize. Handy for UI designers and developers.
Select a month and see the modern and traditional birthstones with images and meaning. Classic reference.
Watch the planets orbit the Sun in a top‑down 2D view. Adjust speed and zoom. Distances not realistic; beautiful model.
Enter standard dice notation (e.g., 2d8+3, 4d6k3) and see the roll result and individual dice. Must for tabletop RPG.
Create a random superhero with a unique name, power, weakness, and origin story. Fun creative writing prompt. All frontend.
See planets and orbits at true scale (or logarithmic). Scroll from the Sun to Pluto. Understand space distances. Canvas.
Type a line and see syllable count as you write. Generate nature-themed prompts. Poetry aid.
Quick reference for frequently used Git commands with examples. Searchable and categorized. A handy resource for all developers.
Calculate grout needed (lbs or kg) based on tile size, grout joint, and area. Also recommend spacer size. Local estimator.
Generate a realistic‑sounding exoplanet designation (e.g., Kepler‑442b) and a sci‑fi planet description. For worldbuilding.
Calculate how much water to change weekly to keep nitrates under control. Based on current nitrate level, desired level, and tank volume.
Enter a CSS value in vw/vh and see the actual pixel size at current viewport. Dynamic resize demo.
Estimate how much agricultural lime or elemental sulfur to add to change soil pH by a target amount. Based on soil type and current pH. Educational.
Enter a package name and version range to see all satisfying versions from the registry. Understand ^ and ~.
Learn what water is safe (rain, distilled, low PPM) for pitcher plants and flytraps. Visual PPM scale.
Understand how !important behaves inside @layer vs unlayered styles. Interactive example. Avoid common pitfalls.
Rotate a 3D cube on your phone using the Gyroscope API. See angular velocity around each axis. Amazing sensor demo.
Calculate probability of k successes when sampling without replacement. Useful for quality control and card games.
Input camera sensor, focal length, aperture, distance to get hyperfocal distance and DoF range. Visual chart.
A 10‑band graphic equalizer applied to any audio file or mic input. Save presets. All processing via Web Audio API.
Calculate how much pure ammonia to add to reach 4ppm for a fishless cycle. Safe start guide.
Convert diopter strength to approximate magnification and working distance for macro photography.
Perform arithmetic on fractions and get simplified results. Handles mixed numbers and improper fractions. Step-by-step display. Educational and precise.
Calculate projector throw distance or screen image size based on throw ratio. Visualize setup. Essential for home theater planning. Local.
Calculate the output voltage and resistor values for a voltage divider circuit. Includes schematic. Handy for electronics hobbyists and engineers.