Lolman Tools

Calculate your exact age from date of birth with time, including years, months, days, hours, minutes, and seconds

Calculate your Body Mass Index (BMI) and assess your weight status with our easy-to-use BMI calculator

Validate credit card numbers in your browser using the Luhn algorithm and detect the brand (Visa, Mastercard, Amex, Discover, Diners, JCB, RuPay)

Calculate the exact difference between two dates or Unix timestamps, broken down into years, months, days, hours, minutes, and seconds.

Calculate sale prices, stacked discounts, tax, and original prices with a free browser-only discount calculator that updates as you type.

Estimate Indian income tax for FY 2025-26 using the old or new tax regime with deductions, rebate, cess, and slab breakdowns.

Calculate monthly EMI, total interest, and full amortization schedule for any loan using the standard reducing-balance EMI formula.

Predict the next number in a sequence using machine learning trained directly in your browser

Convert numbers between any bases from 2 to 36. View binary, octal, decimal, and hexadecimal side by side, with a custom from/to base selector.

Calculate percentages three ways: find X% of Y, find what percent X is of Y, and compute percentage change from X to Y

Generate permutations and combinations from character sets or word lists - perfect for security testing, password cracking wordlists, and penetration testing

Discover your zodiac sign based on your birth date with detailed traits and characteristics