Everyday Tools
This category groups the practical tools you reach for when you need a quick answer, a cleaner number, or a fast utility without opening a spreadsheet or installing an app.
- Health, money, time, and conversion tools in one place.
- Built for quick checks, planning, and real-life tasks.
- Works well for people who need answers faster than a search result thread.
Featured picks in Everyday Tools
Start with the higher-interest tools below, then browse the full category list if you need a narrower utility.
Age Calculator
Turn a birthdate into exact age, total days alive, rough heartbeats, breaths, and full moons.
Bill Splitter
Enter each person's subtotal and split tax and tip proportionally. Handles unequal splits between any number of people.
Blood Pressure Checker
Check your blood pressure reading against AHA categories. Enter systolic and diastolic values to see your BP category and what it means.
BMI Calculator
Calculate your Body Mass Index in imperial or metric. See your BMI category and healthy weight range.
Body Fat Calculator
Estimate body fat percentage using the US Navy method. Supports inches and centimeters. Shows category and a visual progress bar.
Break-Even Calculator
Enter fixed costs, variable cost per unit, and selling price to find break-even volume, revenue, and contribution margin.
Related topic hubs
These hubs collect nearby tools by job to be done instead of by internal category.
All Everyday Tools apps
62 apps currently live in this category.
Age Calculator
Turn a birthdate into exact age, total days alive, rough heartbeats, breaths, and full moons.
Bill Splitter
Enter each person's subtotal and split tax and tip proportionally. Handles unequal splits between any number of people.
Blood Pressure Checker
Check your blood pressure reading against AHA categories. Enter systolic and diastolic values to see your BP category and what it means.
BMI Calculator
Calculate your Body Mass Index in imperial or metric. See your BMI category and healthy weight range.
Body Fat Calculator
Estimate body fat percentage using the US Navy method. Supports inches and centimeters. Shows category and a visual progress bar.
Break-Even Calculator
Enter fixed costs, variable cost per unit, and selling price to find break-even volume, revenue, and contribution margin.
Calorie Deficit Calculator
Calculate the calorie deficit needed to reach your goal weight by a target date. See daily calorie target, weight loss pace, and a timeline.
Calories Burned Calculator
Estimate calories burned during exercise using MET values. Supports 50+ activities, body weight, and duration.
Compound Interest Calculator
See how money grows over time with compound interest. Includes monthly contributions, growth chart, and year-by-year table.
Cooking Conversions
Convert cooking measurements instantly - cups, tablespoons, teaspoons, milliliters, ounces, grams, and more.
Credit Card Validator
Validate card numbers with the Luhn algorithm. Detects Visa, Mastercard, Amex, Discover, and Diners.
Currency Converter
Convert between 30+ world currencies instantly using a built-in rate table. Swap currencies, see live rates, and quick-convert to all currencies at once.
Daily Water Intake Calculator
Calculate your recommended daily water intake based on weight, activity level, and climate. Track glasses consumed today.
Date Calculator
Calculate the difference between two dates, or add and subtract days from any starting date.
Dog Poop Tracker
Mark sections of your yard clean or dirty with a simple grid interface. Field-ready and weirdly practical.
Fibonacci Sequence
Generate Fibonacci sequences, find the Nth term, or check if a number is a Fibonacci number. Handles large values with BigInt.
File Size Converter
Convert between bytes, KB, MB, GB, TB, and PB instantly. Includes bit equivalents. Click any result to copy it.
Fraction Calculator
Add, subtract, multiply, and divide fractions. Simplify fractions, convert to decimals, and convert between mixed and improper fractions.
GCD & LCM Calculator
Find the GCD and LCM of up to six numbers with step-by-step working using the Euclidean algorithm.
Grade Calculator
Calculate your weighted grade average or GPA. Add assignments with weights, see your current grade and what you need on the final.
Heart Rate Zones
Calculate your 5 aerobic training zones from age or custom max HR. Supports both % of max and Karvonen heart rate reserve methods.
Inflation Calculator
Calculate the inflation-adjusted value of money over time. See what a dollar from any year is worth today or in the future.
ISBN Validator
Validate ISBN-10 or ISBN-13 numbers, format with hyphens, and convert between the two formats.
Loan Comparison Calculator
Compare two loan options side by side - different rates, terms, or amounts. See total cost, interest paid, and monthly payment differences instantly.
Loan Payment Calculator
Calculate monthly payments, total interest, and a full amortization schedule for any loan.
Mortgage Calculator
Calculate monthly mortgage payments with down payment, PMI, property tax, and insurance. See amortization and total cost breakdown.
Multiplication Table
Generate a customizable multiplication table up to any size. Highlight rows and columns on hover. Color-coded by value.
Nap Calculator
Calculate the perfect nap length or bedtime based on 90-minute sleep cycles. Wake up refreshed every time.
Net Worth Tracker
Add named assets and liabilities to instantly calculate your net worth, with a proportional bar chart showing the breakdown.
Number Formatter
Format any number with custom decimal places, currency, thousands separator, and more. Shows formatted, scientific, ordinal, and word output.
Number to Words
Convert any number to words. Supports standard, currency (USD), and ordinal modes. Great for checks and legal documents.
Ohm's Law Calculator
Calculate voltage, current, resistance, and power using Ohm's Law. Enter any two values and get the other two instantly.
Pace Calculator
Calculate running pace, time, or distance. Enter any two values and get the third. Includes race time predictions.
Passphrase Generator
Generate strong memorable passphrases from a 200+ word list. Customize word count, separator, capitalization, and number suffix.
Password Generator
Generate five random passwords at once with adjustable length, character options, copy buttons, and a strength readout.
Password Strength Checker
Check password strength instantly. Get entropy score, time-to-crack estimate, and improvement tips. Nothing leaves your device.
Pay Converter
Convert any salary between hourly, daily, weekly, biweekly, monthly, and annual rates. Click any result to switch modes.
Percentage Calculator
Calculate what percent of a number is, percentage change, and add or subtract percentages instantly.
Periodic Table
Explore all 118 elements in a clickable periodic table with mass, group, period, phase, and electron configuration.
Prime Factorization
Break any number into its prime factors with exponents. Also shows factor count, sum, and primality.
QR Code Generator
Generate QR codes from any URL, text, WiFi, or contact info. Customize colors and download as PNG.
Quadratic Solver
Solve ax² + bx + c = 0 with real or complex roots, step-by-step work, discriminant details, and a live parabola graph.
Recipe Scaler
Scale any recipe up or down by changing the serving count. Every ingredient adjusts instantly.
Resistor Color Code
Decode or build 4-band and 5-band resistor color codes with live resistance, multiplier, and tolerance output.
ROI Calculator
Calculate return on investment (ROI), annualized return, and total profit from any investment.
Roman Numeral Converter
Convert numbers to Roman numerals and back. Includes a full breakdown and common reference table up to 3,999,999.
Rule of 72
Enter an interest rate to instantly estimate how many years it takes to double your money, with exact compounding comparison.
Scientific Notation Converter
Convert numbers to and from scientific notation. See standard form, engineering notation, and word form.
Speed Distance Time Calculator
Solve for speed, distance, or time - enter any two values and get the third instantly. Supports multiple units.
Statistics Calculator
Compute mean, median, mode, range, quartiles, variance, standard deviation, and frequency counts for any dataset you paste.
Tally Counter
Simple tally counter with multiple named counters, keyboard shortcuts, and history log.
Tax Bracket Calculator
Calculate US federal income tax by bracket for any income and filing status. See marginal vs effective tax rate and take-home pay.
TDEE Calculator
Calculate your Total Daily Energy Expenditure and daily calorie needs based on weight, height, age, sex, and activity level.
Temperature Converter
Convert between Fahrenheit, Celsius, and Kelvin instantly. Clean, fast, no extra steps.
Timezone Converter
Convert times between any two timezones instantly, with a live world clock for 9 major cities.
Tip Calculator
Split restaurant bills with custom tip percentages, quick-select tip buttons, totals, and per-person math.
Transfer Time Estimator
Estimate how long a file transfer or download takes based on file size and connection speed.
Triangle Solver
Solve any triangle from three known values, including ambiguous SSA cases, with solved sides, angles, area, perimeter, and a live diagram.
Unit Circle Reference
Interactive unit circle showing standard angles, radians, coordinates, and exact sin cos tan values.
Unit Converter
Switch between length, weight, temperature, volume, and speed with live conversions.
Unit Price Calculator
Compare prices per unit across multiple products. Find the best deal by calculating cost per ounce, gram, count, or any unit.
Wind Chill & Heat Index Calculator
Calculate wind chill temperature and heat index from actual temperature and wind speed or humidity.