Page Speed Simulator - Online Estimate Load Metrics
Enter a URL and get a rough client-side performance simulation: request count, DOM size, and potential speed tips. No real Lighthouse.
UD5 Toolkit
Estimate how long it takes to read any text. Paste your content, adjust your reading speed, and get an instant time estimate.
Enter a URL and get a rough client-side performance simulation: request count, DOM size, and potential speed tips. No real Lighthouse.
Quickly estimate your internet connection speed by downloading a small test file. See class and recommendations.
Enter your max plank hold time and see how you compare to others of the same age and gender. Includes training tips to improve endurance.
Generate random analog clock faces and type the correct time. Adjust difficulty from hours only to 5‑minute intervals to full minute precision.
Use the PERT (Program Evaluation Review Technique) formula to estimate task duration. Input optimistic, most likely, and pessimistic times to get a weighted average.
Enter starting room temp, target temp, and method to see how many minutes to chill your wine perfectly.
Enter the recipe's wattage and your microwave's wattage to convert cooking time. Prevent burnt or cold food.
Convert a recipe from oven or stovetop to slow cooker (high/low) and vice versa. Perfect doneness.
Convert traditional cooking time to electric pressure cooker time. Reference chart.
Select meat type and weight to get optimal brine time. Avoid over‑salting.
List assignments with estimated minutes. See total time and break into Pomodoro sessions. Stay motivated.
Look up recommended time and temperature for various sublimation blanks. Quick reference.
Apply a color tint overlay over text to see if it helps reading comfort. Trial for visual stress.
Select herb and method to see estimated drying time. Set a reminder to check. Preserve flavor.
Select a repair type (leaky faucet, paint room, etc.) and get a typical cost range. Simple general guide, no personal data.
Enter your altitude to adjust canning processing times or pressure. Prevent botulism. Based on USDA guidelines. Essential for home canners.
Enter any two variables (speed, distance, time) and get the third. Supports mph, km/h, m/s and multiple units. Practical for runners and drivers.
Calculate travel time by entering distance and average speed. Add rest stops duration. Get estimated arrival time. Simple travel planner.
Calculate how many rolls of wallpaper you need based on wall dimensions, roll size, and pattern repeat. Avoids overbuying. Simple and local.
Select an activity, enter your weight and duration, and see the estimated calories burned. Based on MET values.
Shows a counter of how many seconds you have been idle. Tracks mouse and keyboard activity without recording.
Measure your visual and auditory reaction speed. Average and best times shown. No data collected. Pure Javascript timing.
Call navigator.storage.estimate() and display a visual pie chart of used vs. available browser storage. For PWA debugging.
Add book titles and authors to a to‑read list. Move them to 'finished' and add a rating. Data saved locally.
Convert a Unix timestamp or ISO date into a human‑friendly relative string like '2 days ago'. See examples.
Enter two date‑time values and get the exact years, months, days, hours, minutes difference. Word output also.
A beautiful full‑screen binary clock showing hours, minutes, seconds in glowing bits. Dark mode perfect for desks.
Instantly convert 12‑hour AM/PM time to 24‑hour format and vice versa. Simple and essential for travelers.
Convert minutes to decimal hours and vice versa. Essential for billing and payroll. Instant conversion with a handy chart.
View the current time in binary (BCD) format. A stylish geek clock with dot columns. Toggle between binary and decimal labels.