Calculators Tools

Easily calculate percentages, percentage of a number, percentage increase, decrease, and more with our free online percentage calculator. Fast, accurate, and no registration required.

Calculate date differences, add or subtract days from a date, and find exact dates with our free online date calculator. Fast, accurate, and no registration required.

Easily convert between hundreds of units across length, weight, temperature, speed, area, volume, and more with our free online unit converter. Fast, accurate, and no registration required.

Convert colors between HEX, RGB, HSL, CMYK, HSV, and more formats instantly with our free online color converter. Accurate, easy to use, and no registration needed.

Calculate the exact number of business days between two dates with our free online workday calculator. Exclude weekends and add custom holidays. Perfect for project scheduling, payroll, and deadline tracking. No registration required.

Calculate your monthly loan payment, total interest, and total repayment instantly with our free online loan calculator. Supports equal principal and interest method. Ideal for mortgages, car loans, and personal loans. No registration required.

Calculate your GPA on a 4.0 scale instantly with our free online GPA calculator. Add multiple courses with credits and letter grades to get your weighted average GPA automatically. Ideal for college students and study-abroad applicants. No registration required.

Calculate your exact age in years, months, and days with our free online age calculator. Also view your total days lived and the countdown to your next birthday. Supports any reference date. Fast, accurate, and no registration required.

Create a real-time countdown to any target date and time with our free online countdown timer. Displays remaining days, hours, minutes, and seconds live. Add a custom event name and share via link. No registration required.

Calculate your Body Mass Index instantly with our free online BMI calculator. Supports metric (kg/cm) and imperial (lb/ft/in) units. View your BMI value, WHO weight category, and a color-coded visual scale. No registration required.