UD5 Toolkit
3D Print Filament Calculator - Online Weight, Cost & Length Tool
Estimate filament usage: enter weight or length and get the remaining value plus cost. PLA/ABS density reference. Local calculation.
Portable Generator Sizing – Online Wattage Estimator
Total Running Watts
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watts
Peak Surge Watts
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watts
Min Generator Size
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watts (starting)
Add appliances to calculate
0 items selected
Quick Presets:
Add Custom Appliance
🔧 Related Tools
Surfboard Volume Estimator – Online Dimensions to Liters
Enter length, width, thickness to approximate surfboard volume. Compare to your ideal volume based on weight.
Crochet Hat Sizing Guide – Online Measure & Increase
Enter head circumference to get crown diameter and length. Perfect fit top‑down hats.
Megapixel Calculator - Online Print Size & Resolution
Find out how large you can print based on image resolution in pixels. Understand DPI and megapixels.
Ideal Weight Range Calculator - Online Hamwi, Devine & Robinson Methods
Find your healthy weight range using multiple medical formulas (Hamwi, Devine, Robinson, Miller). Frame size adjustment included. Instant local computation.
Print CSS Generator - Online Optimize Pages for Paper
Toggle print‑specific styles like removing backgrounds, showing link URLs, and adding page breaks. Generate a complete print stylesheet instantly.
Shipping Box Size Optimizer - Online Fit Items into Carton
Enter item dimensions and find the smallest rectangular box that can fit them (simple packing heuristic). Helps reduce shipping costs. Local algorithm.
Print Readability Calculator – Online Minimum Font for Distance
Enter viewing distance to get the minimum readable print font size. Design posters and signs.
One Rep Max Calculator - Online Strength & Lifting Estimator
Estimate your one‑rep max (1RM) from weight and reps. Supports multiple formulas (Epley, Brzycki). Training percentages table.
Felting Shrink Calculator – Online Predict Wool Felted Size
Knit a swatch, measure before and after felting, and let this tool calculate the shrink percentage. Plan your felted projects accurately.
Lit Element Skeleton Generator - Online Quick Starter
Generate a Lit Element web component skeleton with styles and properties. Copy and start coding immediately.
Backpack Weight Planner – Online Distribute Load & Reduce kg
List each item with weight, see total load. Color-coded recommendations for reducing pack weight. Local storage.
Spray Foam Insulation Calculator – Online Board Feet
Estimate board feet of spray foam needed for a cavity. Compare closed‑cell and open‑cell.
Diaper Size Finder - Online Weight-Based Size Guide
Enter baby's weight in lbs or kg to see suggested diaper sizes across major brands. General reference, no data collected.
Password Entropy Calculator - Online Bits of Security Meter
Calculate the entropy (in bits) of a password based on character pool size and length. Visual strength meter with crack time estimation. Local only.
Print CSS Generator - Online Optimize Page for Paper
Add print styles like removing backgrounds, adding page breaks, setting margins. See print preview instantly.
One Rep Max (1RM) Calculator - Online Strength Trainer Tool
Calculate your one-rep max using Epley, Brzycki, Lombardi or O'Conner formulas. Predict maximum lifting capacity and plan progressive overload. 100% local processing.
Logical Sizing Properties Demo - Online block‑size & inline‑size
Compare width/height with block‑size/inline‑size in different writing modes. Understand intrinsic sizing. Copy best practices.
Photo Print Resolution Checker – Online DPI Maximum Size
Enter megapixels and desired DPI to see the maximum print size without upscaling. Quick quality check.
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.
Pregnancy Weight Gain Tracker - Online Weekly Chart by BMI
Plot weekly weight gain against recommended ranges based on pre-pregnancy BMI. IOM guidelines displayed. Data stored in localStorage.
Rubber Band Ball Calculator – Online Estimate Bands Needed
Enter current ball size and target to find approx rubber bands required. Fun and satisfying.
Element Resize Detector - Online Monitor Size Changes
Select any element on the test page and monitor its size changes with ResizeObserver. See log of all entries.
One‑Rep Max (1RM) Calculator - Online Lifting Progress
Estimate your one‑rep max from weight and reps. Supports Epley, Brzycki, Lombardi formulas. See your strength level.
Photo Print Size Guide - Online Aspect Ratio to Dimensions
Enter image pixel dimensions and compute maximum print size at various DPI. With aspect ratio presets (4x6, 5x7, 8x10) and cropping preview. Local tool.
Image vs. SVG Weight Comparator - Online Byte‑for‑Byte
Paste a raster image and an SVG, see the file size and rendering time. Understand when to use vector. Local.
Body Fat Percentage Estimator - Online US Navy & Covert Bailey Method
Estimate body fat percentage using neck, waist, hip (if female) measurements. Supports US Navy, Covert Bailey, and 3-site skinfold methods. No data sent to server.
BMI Chart & Ideal Weight Table - Online Reference
Look at a color‑coded BMI table for your height and see the healthy weight range. Simple reference.
Resize Observer Playground - Online Watch Element Size
Drag to resize a box and see the Resize Observer callback fire. Get contentRect and borderBoxSize. Learn the API.
Tire Size Visualizer - Online Compare & Dimensions
Enter two tire sizes and see a side‑by‑side comparison of diameter, width, and speedometer error. Local math.