Calculators
Essential mathematical tools for everyday calculations.
Age Calculator
Calculate your exact age in years, months, and days on any date. Also shows total weeks, days, and hours, plus a countdown to your next birthday.
BMI Calculator
Calculate your Body Mass Index in metric or imperial units and see which WHO weight category it falls in. Private, free, and no signup required.
Discount Calculator
Find the final price and how much you save after a percentage discount, so you can compare sale offers quickly and accurately.
GPA Calculator
Calculate unweighted, weighted (Honors/AP), and cumulative GPA on a 4.0 scale by entering each course grade and its credits.
Loan Calculator
Calculate monthly loan payments, total interest, and total cost from the amount, interest rate, and term, so you can compare options before borrowing.
Percentage Calculator
Work out percentages fast: X% of a number, what percent one number is of another, and percentage increase or decrease between two values.
Why Use ToolGhost Calculators?
ToolGhost offers a comprehensive collection of free calculators designed to simplify your workflow. All tools work directly in your browser with no downloads or signups required. Whether you need quick calculations, file conversions, or productivity boosters, our calculators are built for speed, accuracy, and ease of use.