Utility Tools

Percentages are everywhere — sales tax, tips at restaurants, discounts when shopping, grade calculations, interest rates, and statistic. Most people know the basics, but when you need to figure out "15% of 47" or "what percent is 23 out of 89" quickly, doing it in your head gets messy.

This calculator handles three common situations: finding what percentage one number is of another (like "45 out of 60 is what percent?"), calculating the percentage of a number (like "20% of 85"), and percentage increase/decrease (like "if something was $50 and now costs $65, what's the percent increase?").

The percentage change one is especially useful. Prices go up, prices go down, grades improve or drop. Knowing the actual percentage change gives you context. A $5 increase on a $10 item is huge (50%). The same $5 increase on a $200 item is barely noticeable (2.5%).

Real examples: Restaurants — 18% tip on a $47 bill. Shopping — 30% off a $120 jacket. Grades — you got 38/50 on a test, that's 76%. Work — your sales went from 45 to 62, that's a 37.8% increase.

Fractions are one of those things that seem simple until you have to add 3/7 and 2/5 or figure out which is bigger — 5/8 or 3/5. In school, you learn to find common denominators, but in real life, you just want the answer.

This calculator handles all basic operations: add, subtract, multiply, divide fractions. It also simplifies results automatically. So if you get 8/12, it shows 2/3. It also converts between fractions and decimals, which is handy when a recipe calls for 2/3 cup but your measuring cup shows decimals.

The compare feature is useful too. Which is larger, 7/9 or 5/7? The calculator tells you instantly (7/9 is about 0.778, 5/7 is about 0.714). Or if you're splitting something unevenly, like 3/5 of a pizza to one person and 2/5 to another, you can see the exact difference.

Who uses this: Cooking and baking (recipes rarely use decimals), woodworking and construction (measurements in inches are fractions), students doing homework, anyone dividing things unevenly.

Everyone knows their age in years. But sometimes you need more detail. How many months old is a baby? How many days until your next birthday? Exactly how old will you be on a specific future date (like retirement or graduation)?

This calculator gives you age in years, months, and days. Enter a birth date and a target date (or leave it at today), and it calculates the exact difference. It accounts for leap years and the varying lengths of months automatically.

The "time until next birthday" feature is a nice extra. It tells you exactly how many days, hours, and minutes until your next one. Also useful for calculating age for legal purposes — like when someone needs to be exactly 18 or 21 for something, down to the day.

Common uses: Parents tracking baby ages in months, planning birthday parties, eligibility checks (voting, drinking, retirement), anniversary calculations, historical age calculations for events.

Date and time math is surprisingly tricky. How many days between March 15 and August 22? If a project starts on June 10 and takes 45 days, when does it end? If you start work at 9:15 AM and finish at 5:45 PM with a 30-minute lunch, how many hours did you work?

The Date Calculator handles adding or subtracting days, weeks, months, or years from any date. Need to know what date is 90 days from today? Done. Need to know how many days until Christmas? It tells you. Need to figure out a warranty expiration date 2 years from purchase? Easy.

The Time Calculator is for hours and minutes. Adding up work hours for timesheets, calculating how long a meeting lasted, figuring out when to start cooking so dinner's ready at a specific time. It handles AM/PM and 24-hour formats, and accounts for crossing midnight.

Real situations: Project planning, billing hours, pregnancy due dates (40 weeks from last period), subscription renewals, lease terms, travel planning, medication schedules.

Writing numbers as words seems old-fashioned until you're writing a check, filling out a legal document, or creating an invoice. Banks require checks to have the amount written out in words. Contracts often specify dollar amounts in words to prevent alterations.

This converter takes any number and writes it out in English. 1,234 becomes "one thousand two hundred thirty-four." 15.75 becomes "fifteen and seventy-five hundredths" (or "fifteen dollars and seventy-five cents" for money). It handles numbers up to the billions, so even large figures like 2,500,000 become "two million five hundred thousand."

The currency option is especially useful for business. It formats amounts properly for checks and invoices, with "dollars and cents" language. So $1,250.50 becomes "one thousand two hundred fifty dollars and fifty cents."

Who needs this: Business owners writing checks, students learning number names, legal document preparation, invoice creation, any situation where numbers need to be unambiguous.

Word count limits are everywhere. Essays have minimum and maximum lengths. Social media posts have character limits. Resumes should be 1-2 pages. Job applications ask for specific word counts. Even text messages have limits.

This tool counts words, characters (with and without spaces), sentences, and paragraphs in real-time as you type or paste. No buttons to click, no refresh needed — the counts update instantly. It's useful for students checking essay lengths, writers hitting article targets, or anyone monitoring text length.

The character count is important for social media. Twitter has limits, Instagram bios have limits, SMS messages have limits. Knowing exactly how many characters you've used prevents cut-off messages or frustrated editing later.

The reading time estimate is a bonus feature. It tells you roughly how long it takes to read the text aloud, based on average reading speed. Useful for presentations, speeches, or audio recordings where timing matters.

Common uses: College application essays (500 words exactly), blog posts (target 1500 words), social media captions, academic papers, email drafts, translation estimates.