Party Headcount & Supply Calculator – Online Estimate for Kids
Enter number of children and see estimated cups, plates, party favors needed. Quick planning tool for birthday parties.
UD5 Toolkit
Digital sticker chart for kids – motivate, track & celebrate!
Enter number of children and see estimated cups, plates, party favors needed. Quick planning tool for birthday parties.
Plot your child's height and weight on WHO growth charts over time. Data saved locally for privacy. Visualise growth trajectory.
Reference for standard blanket and afghan sizes in inches and cm. Perfect for knitters and crocheters.
Enter baby's weight in lbs or kg to see suggested diaper sizes across major brands. General reference, no data collected.
Deep-dive into text with detailed character and letter frequency analysis. Supports multiple languages and includes whitespace control. Fast and private.
Enter total balance and limit to see utilization percentage. See how it affects credit score bands.
Calculate BMI for children and teens (ages 2‑19) and see the percentile based on CDC growth charts. Educational only.
Enter wallet size and get the exact length of duct tape strips needed to build a sheet. DIY crafting.
Enter your bird species and weight to find the correct harness size. Visual adjustment guide.
Measure your waist‑to‑hip ratio and learn about associated health risks. WHR interpretation. Educational only.
Estimate bulb mode exposure time needed for different light sources and distances. Experimental photography aid.
Set a nap timer with optional gentle white noise or lullabies (Web Audio). Reminder to put baby down. Fully local, no ads.
Approximate monthly child support obligation based on both parents incomes and number of children. Uses simplified model for educational reference. Not legal advice.
Estimate ovulation day and fertility window from last menstrual period. Displays probable conception dates. Informational only; processes locally in browser.
Log daily sleep to see cumulative sleep debt or surplus over weeks. Visualizes chronic sleep loss trends. Stores data locally in your browser only.
Select month and get a to‑do list (clean gutters, check weatherstripping). Local storage, printable.
Enter desired pom-pom diameter to estimate yards needed and number of wraps. Quick craft math.
Log your daily mood and view trends on a calendar. Encourages mindfulness. Data stored only in your browser's localStorage for complete privacy.
Calculate total work hours and pay from time-in/out entries. Supports overtime and breaks. Generate a printable timesheet. All local.
Enter piece count and piece size to estimate finished dimensions. Check if it fits your table.
Enter appliance loads and battery capacity to estimate how long your RV can run without recharging. Local simulation.
Enter your height and riding style to get a recommended stance width and binding angles. Centered and balanced.
Enter clock-in/out times for each day and see total hours worked, overtime. Calculate weekly pay based on hourly rate. Local storage.
Count words, characters, sentences, and paragraphs instantly. Analyze text density and reading time. Secure client-side processing for your content privacy.
Calculate your Basal Metabolic Rate using the Mifflin‑St Jeor equation. Know how many calories you burn at rest. All data private.
Calculate infant weight, length, and head circumference percentiles using WHO and CDC reference data. Visual growth chart and interpretation for parents.
Enter child's stats and compare to typical rear-facing, forward-facing, and booster seat requirements. Reference tool.
Simple interface for kids to log reading minutes and pages. Add book titles. Print weekly report. Local.
See how extra monthly or lump‑sum payments reduce your mortgage term and total interest. Dynamic chart. All local calculation.
Calculate power supply and controller requirements for any length of LED strip (5050, 2835, WS2812B). Prevents overloading. Local only.