UD5 Toolkit
Close‑Up Lens Diopter Calculator – Online Magnification Estimate
Convert diopter strength to approximate magnification and working distance for macro photography.
Gyroscope Visualizer - Online Angular Velocity Cube
Gyroscope Visualizer
Real-time Angular Velocity • 3D Cube
Auto Mode
Drag to rotate • Scroll to zoom • Auto mode shows angular velocity demo
Angular Velocity
0.0
°/s
0.0
°/s
0.0
°/s
max range: ±300 °/s
Settings
0.2×1×3×
Frequently Asked Questions
Angular velocity (ω) measures how fast an object rotates around a specific axis. It is expressed in degrees per second (°/s) or radians per second (rad/s). A typical smartphone gyroscope can measure up to ±2000°/s. The three axes correspond to: X (roll) – tilting left/right, Y (pitch) – tilting forward/back, and Z (yaw) – rotating like a compass.
Modern smartphones use MEMS (Micro-Electro-Mechanical Systems) gyroscopes based on the Coriolis effect. A tiny vibrating mass shifts when the device rotates, and this displacement is measured capacitively. Combined with accelerometers and magnetometers, these form an IMU (Inertial Measurement Unit) used for screen rotation, gaming, VR/AR, and navigation.
The Gyroscope API and DeviceOrientation API are considered powerful features that could potentially be used for fingerprinting or eavesdropping. Browsers require a secure context (HTTPS) to access these sensors. Localhost is also considered secure for development. If you're on HTTP, use the Auto or Manual modes instead.
Degrees per second (°/s) is more intuitive for everyday use – 360°/s means one full rotation per second. Radians per second (rad/s) is the SI unit used in physics and engineering. Conversion: 1 rad/s ≈ 57.3°/s. Use the unit toggle in Settings to switch between them. The Gyroscope API natively reports values in rad/s.
Sensor mode: Works on Chrome 67+, Edge 79+, Opera 54+ (Android & desktop with gyroscope hardware). Safari supports DeviceOrientation on iOS but may require user permission. Firefox has limited support. Auto & Manual modes: Work on all modern browsers including desktop and mobile. For the best experience, use Chrome on an Android device with a gyroscope sensor.
Gyroscope angular velocity data powers many technologies: AR/VR headsets track head rotation; drones stabilize flight; automotive ESC detects skidding; smartphone gaming enables tilt controls; wearable fitness trackers count steps and analyze gait; robotics uses IMU data for balance and navigation; and camera gimbals stabilize footage in real time.
Fertilizer NPK Calculator - Online Nutrient Mix Ratio
Calculate how much fertilizer to add based on desired N‑P‑K ppm and water volume. For hydroponics and soil growers.
Microphone Sensitivity Tester - Online Input Level Meter
See a live VU meter of your microphone's input level. Test if your mic is working and adjust gain. Privacy‑friendly.
Depth of Field Calculator – Online Near/Far Focus Limit
Input camera sensor, focal length, aperture, distance to get hyperfocal distance and DoF range. Visual chart.
Aquarium Additive Doser – Online ml per Gallon Calculator
Enter tank volume and recommended dose to find exact ml or capfuls needed. Avoid overdosing fish.
Macronutrient Split Calculator - Online Protein, Carbs, Fat
Based on your calorie goal, get the perfect gram split of proteins, carbs, and fats. Adjust ratios. For fitness and health.
Aquarium Fishless Cycle Ammonia Calculator – Online Dose
Calculate how much pure ammonia to add to reach 4ppm for a fishless cycle. Safe start guide.
Rubber Band Ball Calculator – Online Estimate Bands Needed
Enter current ball size and target to find approx rubber bands required. Fun and satisfying.
Viewport Unit Calculator – Online vw vh vmin vmax to PX
Enter a CSS value in vw/vh and see the actual pixel size at current viewport. Dynamic resize demo.
Macronutrient Calculator - Online Protein Carb Fat Split
Determine your ideal daily macronutrient intake based on TDEE, goal, and diet preference. Free nutrition planning tool with local computation.
Megapixel Calculator - Online Print Size & Resolution
Find out how large you can print based on image resolution in pixels. Understand DPI and megapixels.
Online Screen Ruler - Measure Pixels & Inches on Screen
An on‑screen ruler that measures in pixels, centimeters, and inches. Drag to resize. Handy for UI designers and developers.
Antenna Length Calculator - Online 1/4 Wave & Dipole Tool
Calculate antenna element lengths for a given frequency (or vice versa). Supports 1/4 wave, 1/2 wave, dipole. Useful for ham radio. Local only.
Decibel Level Reference – Online Common Sound Examples
Interactive scale showing dB levels of everyday sounds with playable samples. Hearing safety.
TV Viewing Distance Calculator - Online Size vs Resolution Guide
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.
Distance Between Two Points - Online 2D & 3D Calculator
Compute the Euclidean distance between two points in 2D or 3D space. Also shows midpoint. Quick geometry helper.
Voltage Divider Calculator - Online Electronics Resistor Tool
Calculate the output voltage and resistor values for a voltage divider circuit. Includes schematic. Handy for electronics hobbyists and engineers.
Tile Grout Calculator – Online Coverage & Spacer Guide
Calculate grout needed (lbs or kg) based on tile size, grout joint, and area. Also recommend spacer size. Local estimator.
Corrected Age Calculator - Online for Premature Babies
Calculate corrected (adjusted) age for premature infants based on birth date and due date. Important for developmental milestone tracking. Local only.
Aquarium Water Change Calculator - Online Safe Volume Replacement
Calculate how much water to change weekly to keep nitrates under control. Based on current nitrate level, desired level, and tank volume.
Subscription Rename & Cost Calculator - Online Saver
Track your subscriptions, calculate monthly and yearly totals, and find savings by pausing unused services. Local data.
Online Dice Roller - Virtual Dice Simulator
Simulate rolling dice for board games, RPGs, and decision making. Choose number of dice and faces. Fun, lightweight, and no download required.
Fraction Calculator - Online Add Subtract Multiply Divide
Perform arithmetic on fractions and get simplified results. Handles mixed numbers and improper fractions. Step-by-step display. Educational and precise.
!important in Layers Tester - Online Cascade Behavior
Understand how !important behaves inside @layer vs unlayered styles. Interactive example. Avoid common pitfalls.
Transistor Biasing Calculator - Online Fixed & Voltage Divider
Calculate resistor values for transistor fixed bias or voltage divider configuration. Quick quiescent point analysis.
Dice Notation Roller - Online 2d20, 4d6 Drop Lowest RPG Tool
Enter standard dice notation (e.g., 2d8+3, 4d6k3) and see the roll result and individual dice. Must for tabletop RPG.
Custom Audio Equalizer - Online 10‑Band Adjust & Presets
A 10‑band graphic equalizer applied to any audio file or mic input. Save presets. All processing via Web Audio API.
Carnivorous Plant Water Guide – Online PPM & TDS Reference
Learn what water is safe (rain, distilled, low PPM) for pitcher plants and flytraps. Visual PPM scale.
Projector Throw Distance Calculator - Online Screen Size Estimator
Calculate projector throw distance or screen image size based on throw ratio. Visualize setup. Essential for home theater planning. Local.
Soil pH Adjuster Calculator - Online Lime & Sulfur Amount
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.