Mortgage Calculator
Provides a mortgage calculator including principal and interest repayment, principal-only repayment, and more.
UtilsKit
Collection of the Most Practical Free Online Tools
Providing convenient, fast, and efficient tools to meet your needs anytime!
Finance & Investment
Car Loan Calculator
Enter loan amount, interest rate, and term to instantly calculate monthly payments, total repayment, and total interest.
Credit Card Installment & Interest Calculator
Calculates credit card installment payments and revolving interest.
Credit Loan Calculator
Enter loan amount, interest rate, and term to instantly calculate monthly payments, total repayment, and total interest.
Compound Interest Calculator
Easily calculate the future value of regular investments or compound interest.
Metaphysics & Date
Lunar Calendar
Quickly check daily auspicious times, solar terms, astrology, and more.
Lunar-Gregorian Converter
Enter a Gregorian or lunar date to convert between them.
Astrology Chart Calculator
Analyze your birth chart to understand your rising sign, houses, and planetary positions.
MBTI + 2026 Horoscope/Role
Enter your MBTI to discover your 2026 keywords and fortune, and generate your exclusive character card!
Aura Color Test
Discover your energy color through intuitive questions and explore the psychological meaning of your aura.
Angel Numbers Lookup
Look up the meaning of angel numbers. When you repeatedly see 111, 222, 444 etc., these are messages from the universe.
Date Calculator
Calculate dates by adding or subtracting days.
Health & Sports
Sleep Time Calculator
Accurately calculate the best sleep and wake-up times.
Pace Calculator
Calculate running or cycling race paces with detailed recommendations.
RM Calculator
A tool for athletes to calculate their one-rep max.
Chronic Prescription Calculator
Enter your visit date and interval to determine the next prescription refill date.
Calorie Deficit Calculator
Calculate BMR, TDEE, and daily calorie deficit to create a science-based weight loss plan.
VO2 Max Calculator
Calculate your VO2 Max using the Cooper Test.
TDEE & BMI Calculator
Calculate your BMI, BMR, TDEE and get calorie recommendations for bulk or cut.
Pets
Pet Calorie & Feeding Calculator
Calculate daily calorie needs and feeding amounts for dogs and cats.
Pet to Human Age Converter
Convert cat and dog ages to human years with life stage labels.
Pet Supplies Budget Planner
Estimate monthly food and litter usage and costs.
Pet Food Safety Checker
Can my pet eat this? Check food toxicity levels for dogs and cats instantly.
Pet Chocolate Toxicity Calculator
Input pet weight, chocolate type, and amount to calculate toxicity levels and advice.
Media & Entertainment
YouTube Video Downloader
Download YouTube videos and audio in various formats (MP4, MP3, WebM).
Ad-Free YouTube Loop Player
Create playlists and enjoy ad-free background looping of YouTube videos.
Text & Symbols
Emoji Symbols
Provides various emojis for chatting fun.
Special Symbols
Offers a variety of special symbols for text editing.
Kaomoji (Facemood)
Provides a variety of kaomoji for more expressive chatting.
Simplified-Traditional Converter
Convert between simplified and traditional Chinese characters.
Case Converter
Easily convert text between uppercase and lowercase.
Word Count Tool
Enter text to get statistics on word count, characters, and lines.
Number to Uppercase Converter
Convert Arabic numbers to uppercase Chinese numerals.
Life & Convenience
QR Code Generator
Generate QR codes from URLs or text instantly. Customize colors and download.
Pomodoro Timer
Boost your productivity with the Pomodoro technique.
What to Eat?
A fun decision-making tool to solve your lunch/dinner dilemmas.
Advanced Team Builder
Random grouping tool with support for mutual exclusion and binding constraints. Designed for teachers, HR, and event organizers.
Lucky Draw Tool
A fun and fair lucky draw tool for year-end parties and events, featuring animated drawings.
1st Coupon
The premier platform for discovering the best coupons
Parenting
Baby Growth Chart Calculator
Track your baby's growth with WHO standards
Vaccination Scheduler
Generate a custom vaccination schedule based on birth date.
Pregnancy Weight Gain Tracker
Monitor your pregnancy weight gain based on pre-pregnancy BMI guidelines.
Milk Intake Calculator
Calculate daily and per-meal milk needs based on baby weight.
Solid Food Introduction Tracker
Gamify the weaning process. Track foods tried, monitor allergies, and build a food passport.
Baby Milestones Checker
A development screening tool for children aged 0-6, helping parents detect developmental warning signs early.
Playground Code
Transform complex programming concepts into creative games, let kids build their own digital theme park
Elder Care
SARC-F Sarcopenia Risk Calculator
Assess sarcopenia risk quickly through SARC-F scale and calf circumference measurement.
AD8 Dementia Screening Tool
Quick dementia screening using the internationally validated AD8 scale to help families assess cognitive changes.
Retirement Burn Rate Calculator
Visualize your retirement asset depletion curve and predict when funds will run out.