Check if any year is a leap year. Enter a year to find out if it has 366 days with February 29. Everything runs locally in your browser — nothing is uploaded.
Calculate the day number of the year for any date. Find out which day of 365 (or 366) a specific date represents.
Count the number of business days between two dates, excluding weekends. Plan projects and track working days accurately.
Find out what day of the week any date falls on. Look up birthdays, holidays, historical events, and future dates.
Expression evaluator with keypad and history, ETA calculator with distance and speed, and a stopwatch/chronometer with lap recording.
Find the midpoint between any two coordinates on a 2D grid. Shows the calculated midpoint coordinates with a visual reference.
Leap Year Calculator lets you check if any year is a leap year. Enter a year to find out if it has 366 days with February 29. Everything runs locally in your browser — nothing is uploaded.. It works on any device with a modern web browser.
Check if any year is a leap year. Enter a year to find out if it has 366 days with February 29. Everything runs locally in your browser — nothing is uploaded. It runs entirely in your browser — no software installation or data uploads required.
Direct text entry, file upload, or URL-based input — depending on the tool. All numeric values are entered through input fields with real-time updates.
Yes. After the initial page load, Leap Year Calculator runs entirely on your device with no internet connection needed. All processing is done locally.
Yes, this tool is completely free with no usage limits, registration, or credit card required.
All processing happens locally in your browser. Your data is never uploaded to any server.
Yes. After the initial page load, the tool runs entirely offline without requiring an internet connection.
No. You can use this tool unlimited times with no quotas or restrictions.
Any modern web browser (Chrome, Firefox, Safari, Edge) on desktop or mobile. No installation needed.
Percentage Calculator
Computes percentage values, percentage increases and decreases, and what-percent-of-what relationships with precise decimal arithmetic. Essential for everyday math — tips, discounts, tax rates, grade scores, and statistical comparisons where quick percentage answers are needed.
Age Calculator
Computes exact age in years, months, days, hours, minutes, and seconds from a given birth date relative to any target date.
EMI Calculator
Splits a loan principal into equal monthly installments using the standard reducing-balance formula with configurable annual interest and tenure.
SIP Calculator
Projects the future value of recurring mutual-fund investments using compounded monthly returns based on historical or assumed growth rates.
BMI Calculator
Computes Body Mass Index from metric or imperial height and weight inputs, categorizing the result into underweight, normal, overweight.
GST Calculator
Computes GST-inclusive and GST-exclusive amounts for Indian tax slabs (5%, 12%, 18%, 28%) with automatic HSN/SAC code hints.