Everyday Life & Calculators

Everyday Life & Calculators Age Calculator Calculate your exact age in years, months, and days from any birth date. Open tool

Everyday Life & Calculators Aspect Ratio Calculator Simplify width and height into a ratio or solve the missing side for a target aspect ratio. Open tool

Everyday Life & Calculators Birthday Countdown See how many days remain until the next birthday for any birth date. Open tool

Everyday Life & Calculators BMI Calculator Calculate Body Mass Index from height and weight using metric or imperial units. Open tool

Everyday Life & Calculators Body Fat % Calculator Estimate body fat percentage with the U.S. Navy circumference method using height and tape measurements. Open tool

Everyday Life & Calculators Break-Even Calculator Find sales volume needed to cover fixed and variable costs. Open tool

Everyday Life & Calculators Business Days Calculator Count weekdays between two dates or add business days while skipping Saturday and Sunday. Open tool

Everyday Life & Calculators Calorie / TDEE Calculator Estimate BMR and daily calorie needs (TDEE) from age, sex, height, weight, and activity. Open tool

Everyday Life & Calculators Coin Flip Flip a virtual coin for quick decisions. Open tool

Everyday Life & Calculators Compound Interest Calculator Project investment growth with compound interest over time. Open tool

Everyday Life & Calculators Date Add / Subtract Add or subtract days, weeks, months, or years from a start date and see the resulting calendar day. Open tool

Everyday Life & Calculators Day of Week Finder Discover which weekday a calendar date falls on for planning meetings and historical checks. Open tool

Everyday Life & Calculators Days Between Dates Count the number of days, weeks, and months between two calendar dates. Open tool

Everyday Life & Calculators Debt Payoff Calculator Estimate months to pay off a balance given APR and a fixed monthly payment. Open tool

Everyday Life & Calculators Dice Roller Roll virtual dice with custom sides and quantity. Open tool

Everyday Life & Calculators Discount Calculator Find sale prices, discount amounts, and original prices from percent-off deals. Open tool

Everyday Life & Calculators Final Grade Calculator Find the final exam score needed to hit a target course grade given current grade and exam weight. Open tool

Everyday Life & Calculators Fuel Cost Calculator Estimate trip fuel cost from distance, efficiency, and price. Open tool

Everyday Life & Calculators GPA Calculator Calculate weighted GPA from course grades and credit hours on a 4.0 scale. Open tool

Everyday Life & Calculators Hours & Minutes Calculator Add or subtract time durations in hours and minutes for timesheets and schedules. Open tool

Everyday Life & Calculators IBAN Validator Validate IBAN checksum with mod 97, format with spaces, and check common EU country lengths. Open tool

Everyday Life & Calculators Inflation Calculator See how inflation changes purchasing power over years. Open tool

Everyday Life & Calculators ISBN Converter Convert between ISBN-10 and ISBN-13 with correct check digits. Open tool

Everyday Life & Calculators Loan / EMI Calculator Estimate monthly loan payments (EMI) from principal, interest rate, and term. Open tool

Everyday Life & Calculators Love Compatibility Calculator Fun name-based compatibility score to share with friends. Open tool

Everyday Life & Calculators Macro Calculator Split a calorie target into protein, carb, and fat grams using customizable macro percentages. Open tool

Everyday Life & Calculators Margin / Markup Calculator Convert between cost, selling price, margin percent, and markup percent for pricing decisions. Open tool

Everyday Life & Calculators Mortgage Affordability Calculator Estimate home affordability from income, debts, and rates. Open tool

Everyday Life & Calculators Number to Words Converter Spell out numbers in English words. Open tool

Everyday Life & Calculators Ohm Law Calculator Solve V = I R for the missing variable when any two of voltage, current, or resistance are given. Open tool

Everyday Life & Calculators Pace Calculator Convert between running pace, time, and distance. Open tool

Everyday Life & Calculators Payday Calculator Project the next N pay dates from a last payday and weekly, biweekly, semimonthly, or monthly frequency. Open tool

Everyday Life & Calculators Percentage Calculator Calculate percentages, percentage change, and what percent one number is of another. Open tool

Everyday Life & Calculators Percentage Change Calculator Calculate percent change from one value to another and reverse to find a target from a percent change. Open tool

Everyday Life & Calculators Pomodoro Timer Run focus and break intervals with a simple Pomodoro-style timer in your browser. Open tool

Everyday Life & Calculators Pregnancy Due Date Calculator Estimate due date and pregnancy week from the first day of the last menstrual period (Naegele's rule). Open tool

Everyday Life & Calculators Random Number Generator Generate random integers or decimals within any min/max range, optionally multiple at once. Open tool

Everyday Life & Calculators Reading Time Calculator Estimate how long it takes to read any text based on words and reading speed. Open tool

Everyday Life & Calculators Resistor Calculator Decode 4-band resistor color codes to ohms and tolerance, and approximate ohms back to bands. Open tool

Everyday Life & Calculators Retirement Countdown Count down the years, months, and days until your target retirement age or date. Open tool

Everyday Life & Calculators ROI Calculator Measure return on investment from gain and cost, with optional simple annualized framing. Open tool

Everyday Life & Calculators Roman Numeral Converter Convert between Arabic numbers and Roman numerals. Open tool

Everyday Life & Calculators Salary ↔ Hourly Converter Convert between annual salary and hourly wage based on hours per week and weeks per year. Open tool

Everyday Life & Calculators Sales Tax Calculator Add or remove sales tax from a price using a custom tax rate for quick checkout checks. Open tool

Everyday Life & Calculators Savings Goal Calculator Estimate monthly deposits needed to hit a savings target by a deadline from a starting balance. Open tool

Everyday Life & Calculators Scientific Calculator Scientific calculator with sin, cos, tan, log, ln, sqrt, pow, and parentheses. Safe evaluation via whitelist, not raw eval. Open tool

Everyday Life & Calculators Shoe Size Converter Convert approximate shoe sizes between EU, US men/women, and UK scales for shopping abroad. Open tool

Everyday Life & Calculators Sleep Cycle Calculator Find ideal bedtimes or wake-up times based on 90-minute sleep cycles so you wake up refreshed. Open tool

Everyday Life & Calculators Split Bill Calculator Divide a bill across people with an optional tip percent and per-person total. Open tool

Everyday Life & Calculators Time Zone Converter Convert a date and time between major world time zones for meetings and travel. Open tool

Everyday Life & Calculators Tip Calculator Calculate tip amount and split the bill fairly across any party size. Open tool

Everyday Life & Calculators Tip Split Advanced Split a bill with tip percent, tax percent, and people count for a per-person total. Distinct from basic tip or split-only tools. Open tool

Everyday Life & Calculators Unit Converter Convert length, weight, and temperature between common metric and imperial units. Open tool

Everyday Life & Calculators Unix Timestamp Converter Convert between Unix epoch seconds and human-readable date-time values in both directions. Open tool

Everyday Life & Calculators VAT Calculator Compute VAT exclusive, VAT amount, and VAT inclusive totals from a rate and base amount. Open tool

Everyday Life & Calculators Water Intake Calculator Estimate a daily water intake target from body weight with an optional activity boost. Open tool

Everyday Life & Calculators Week Number Finder Find the ISO-8601 week number for any date and see the week year when it differs from the calendar year. Open tool