UD5 Toolkit
Tarp Tensioner Knot Tutorial – Adjust Guyline Without Un‑tying
Animated steps to tie a prusik loop onto a guyline and a slipped buntline hitch, creating an easily adjustable tensioning system.
All Tools
999+ toolsHammock Structural Ridgeline Length – 83% Rule Calculator
Enter your hammock length to get the ideal fixed ridgeline length (83% of hammock length). Achieve a consistent, comfortable sag.
Dog Life Jacket Buoyancy Calculator – Weight & Breed
Calculate the minimum buoyancy (in lbs of flotation) needed for your dog based on weight and body type to select a properly sized life jacket.
Gratitude Tree – Add a Leaf for Every Thankful Thought
Type what you’re thankful for and it appears as a leaf on a bare tree. Over time, the tree fills with colorful gratitude leaves.
Oscar‑Style Ballot Maker – Predict the Winners at Your Party
Create a printable ballot for any awards show. Guests tick their picks and you score them against the actual winners.
Run of Show Builder – Timed Event Script with Cues
Build a minute‑by‑minute schedule with speaker names, AV cues, and notes. Export as a clean PDF for your production team.
Rock Tumbling Grit Log – Days per Stage & Grit Usage
Track which stage of tumbling your rocks are in, record grit amounts, and get reminders for when to advance to the next grit.
Friendship Bracelet Pattern Editor – Knot Grid Designer
Design friendship bracelet patterns by placing forward and backward knots on a grid. See a visual preview of the finished bracelet.
Papercraft Unfolder – Convert a Simple 3D Shape to Net
Select a simple 3D shape (cube, pyramid, cylinder) and generate a printable flat net with fold tabs. Great for DIY crafts and math class.
Calories Burned While Sleeping – BMR‑Based Estimator
Based on your weight and hours slept, estimate how many calories you burn simply by sleeping. See the contribution of basal metabolic rate to daily energy use.
Custom Lorem Ipsum Generator – Words, Sentences & Paragraphs
Generate dummy text with precise control: number of paragraphs, sentences per paragraph, and words per sentence. Also choose between Lorem Ipsum and random English.
Advanced Color Contrast Matrix – Test All Pairs in Palette
Paste a list of hex colors and see a grid showing the contrast ratio for every combination. Instantly identifies which pairs pass WCAG AA/AAA.
Did You Know? Fun Fact Quiz – True or False Challenge
Read a surprising statement and decide if it's true or false. Score points and learn quirky facts about science, history, and nature.
Smile Exercise Timer – Boost Mood with Deliberate Smiling
Hold a gentle smile for a set duration while looking at a calming image. A simple, evidence‑based mood booster based on facial feedback hypothesis.
4‑7‑8 Breathing Technique Timer – Relaxation Exercise
Follow an animated circle that guides you through the 4‑7‑8 breathing pattern. Inhale 4s, hold 7s, exhale 8s. Counts cycles and provides haptic cues.
Rain Sound Generator – Realistic Rain, Thunder & Storms
Mix realistic rain sounds with optional thunder and wind. Adjust individual volumes to create the perfect sleep or study atmosphere.
White, Pink & Brown Noise Generator – Focus & Sleep Sounds
Play continuous white, pink, or brown noise directly in your browser. Includes a timer for sleep and volume control for office concentration.
Audio BPM Detector – Find Tempo of an Uploaded Track
Upload an MP3 or WAV file and get an estimated beats per minute using onset detection. DJs and musicians can quickly catalog track tempos.
Video Audio Remover – Mute a Video File Online
Strip the audio track from a video file entirely, leaving only the silent video. Processed locally for speed and privacy. Export as MP4.
Reptile Hide Size Calculator – Tight Fit for Security
Calculate the appropriate hide box dimensions based on your reptile’s length and girth. A snug hide reduces stress and promotes natural behavior.
Ironing Temperature Guide – Fabric Settings & Symbols
Look up the correct ironing temperature for cotton, silk, polyester, and more. Displays the corresponding laundry symbol and whether steam is safe.
Meal Prep Container Planner – Portions & Compartments
Calculate how many meal prep containers and of what size you need for a week’s worth of lunches. Breaks down by protein, grain, and veggie compartments.
Coffee to Water Ratio Calculator – Perfect Pour Over & French Press
Use the golden ratio for coffee brewing. Enter water volume or coffee weight to instantly get the right amount of grounds for your preferred strength.
Chicken Egg Laying Tracker – Daily Coop Production Log
Record how many eggs your hens lay each day. Visual chart shows weekly trends, helping you spot drops in production that may signal health issues.
Aromatherapy Blend Finder – Essential Oil Combos by Need
Select a desired effect (relaxation, focus, energy) and get a suggested essential oil blend with drop ratios. Perfect for diffusers and DIY massage oils.
Daily Quran Verse Display – Random Ayah with Translation
Display a randomly selected verse from the Quran with English translation each day. A moment of spiritual reflection and knowledge.
Bird Seed Mix Calculator – Custom Feeder Blends
Create a custom bird seed blend by mixing ingredient percentages. Calculates total weight and helps attract specific bird species with the right nutrition.
Mulch Calculator – Coverage in Cubic Feet & Yards
Determine how much mulch you need by entering the area and desired depth. Converts between cubic feet, cubic yards, and the number of bags.
Artificial Turf Calculator – Square Footage & Rolls Needed
Measure your yard and calculate how many rolls or square feet of artificial grass you need. Includes waste factor for cuts and seams.
HTML Boilerplate Generator – Custom HTML5 Skeleton
Configure a modern HTML5 boilerplate with your choice of meta tags, social media cards, favicon links, and CSS/JS includes. Download or copy the code.
CSS Obfuscator – Minify & Mangle Class Names
Obfuscate CSS by mangling class names and removing whitespace for production. Use with caution and export a mapping file to keep references intact.
Spoonerism Generator – Fun Word Reversals
Enter a two‑word phrase and the tool swaps the initial sounds to create a hilarious spoonerism. A playful linguistic twist for icebreakers and fun.
Gratitude Streak Tracker – Don’t Break the Chain
Write one thing you’re grateful for each day to build a streak. Visual calendar shows your consistency, reinforcing the positive habit of gratitude.
Custom Keyboard Layout Visualizer for Touch Typing
Design a custom keyboard layout and save it as an image to help learn touch typing on a custom keymap. Supports ANSI, ISO, and ortho layouts.
Grid Overlay Tester – Overlay Custom Grids on Live Sites
Enter a URL and apply a custom CSS grid overlay to check alignment. A quick frontend design tool for verifying column placement and baseline grids.
Bi‑Weekly Mortgage Payment Calculator – Save Thousands
Calculate the interest savings and earlier payoff date by switching to bi‑weekly mortgage payments instead of monthly. See the power of an extra annual payment.
Duct Tape Sheet Calculator – Online Length for Wallet or Purse
Enter wallet size and get the exact length of duct tape strips needed to build a sheet. DIY crafting.
Crochet Hook Size Converter – Online US, UK, Metric, JP
Enter a hook size in any system and instantly see the equivalent in all other standards.
Median Filter Denoiser – Online Remove Salt & Pepper Noise
Apply a simple median filter to remove speckle noise. Adjust kernel size. Fully local canvas processing.
Accessible Chart Palette Builder – Online Data Visualization
Build a color palette for charts that works for protanopia, deuteranopia, and grayscale. Export as array.
Coin Toss Probability Demonstrator – Online Long‑Run Simulator
Virtual flip coins thousands of times and see the heads/tails ratio converge to 50%. Interactive law of large numbers.
Visual Fraction Adder – Online Slice & Combine Pies
Drag pie slices to represent fractions and see them added together. Great for visual learners.
Kanji Stroke Count Quiz – Online Guess & Order
A kanji appears; you guess how many strokes it has. Learn stroke order awareness.
Poetry Meter Detector – Online Iambic, Trochaic, etc.
Paste a line of poem and see which syllable stresses create a particular meter. Educational tool.
Drum Shell Fundamental Note Calculator – Online Bearing Edge
Enter drum diameter, depth, and material to find the shell's approximate fundamental note. For tuning reference.
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.
Air Plant Soaking Timer – Online Weekly Tillandsia Care
Set weekly reminders to soak your air plants. Timer and drying instructions included.
Pond Algaecide Dose Calculator – Online Gallons & Product %
Enter pond volume and product concentration to determine safe ml or teaspoon of algaecide.
Wine Chilling Estimator – Online Fridge vs. Ice Bucket Cooling
Enter starting room temp, target temp, and method to see how many minutes to chill your wine perfectly.
Dishwasher Rinse Aid Refill Tracker – Online Cycle Count
Log how many cycles since last refill and get an alert when it's likely empty.
Iron Absorption Optimizer – Online Timing & Food Pairing
Schedule your iron supplement away from inhibitors (coffee, calcium). Visual reminder and log.
Injection Site Rotation Calendar – Online Abdomen, Thigh, Arm
Plan insulin or other injection sites with a visual body map and date log. Prevent lipohypertrophy.
DIY Electrolyte Powder Calculator – Online Sodium Potassium Glucose Ratio
Create your own oral rehydration solution by mixing salt, potassium, and sugar to WHO formula. Convert to teaspoon amounts.
Candy Making Altitude Adjuster – Online Sugar Stages Corrector
Enter your altitude to see corrected temperatures for thread, soft ball, hard crack, etc. Essential for high‑altitude candy.
Baking Pan Size Converter – Online Round, Square, Rectangle Volume
Enter an original pan size and find an alternative pan with the same batter volume. Never overflow or underfill.
Bolognese Meat to Sauce Ratio – Online Perfect Consistency
Calculate the exact amount of crushed tomatoes needed for a given weight of ground meat. Achieve the perfect ragu thickness.
Microwave Wattage Converter – Online Recipe Time Adjuster
Enter the recipe's wattage and your microwave's wattage to convert cooking time. Prevent burnt or cold food.
Caulk & Sealant Selector – Online Bathroom, Kitchen, Exterior
Answer where you're sealing (shower, window, baseboard) to get the right type of caulk (100% silicone, acrylic latex, etc.). Avoid moldy seals.
Miniature Contrast Painter – Online View Zenithal Highlight & Wash
Simulate zenithal priming and contrast/speed paints over a 3D bust. Understand light and shadow placement before you paint. Great for tabletop miniatures.
Emoji Version Checker – Online See Unicode Support per OS
Enter an emoji or browse to see which Unicode version introduced it and whether older OS versions might fail.