Calculators
A collection of free, easy-to-use calculators for everyday math. Calculate percentages, exact age, sale discounts, and more instantly.
Scientific Calculator
Advanced browser-based scientific calculator.
Fraction Calculator
Add, subtract, multiply, and divide fractions.
Date Calculator
Calculate days between dates or add/subtract time.
Percentage Calculator
Calculate percentages, percentage change, and percentage of a number.
Age Calculator
Calculate exact age in years, months, and days from a date of birth.
Discount Calculator
Calculate the discounted price and amount you save.
Useful Calculators Guides
How to Calculate Percentage: Formula and Examples
Learn the simple mathematical formulas for calculating percentages, percentage changes, and ratios with clear, easy-to-understand examples.
How to Calculate GST: Adding and Removing Tax
A clear guide on how Goods and Services Tax (GST) is calculated, including formulas to add GST or extract it from a gross price.
How to Calculate BMI (Body Mass Index)
Learn the standard medical formula for calculating Body Mass Index (BMI) using both metric and imperial measurements.
How Discounts are Calculated (Including Successive Discounts)
Learn how to calculate sale prices, percentage off, and how successive (multiple) discounts actually stack mathematically.
Popular Tools from Other Categories
Image Compressor
Compress images without losing visible quality — right in your browser.
Merge PDF
Combine multiple PDF files into one single document.
EMI Calculator
Calculate monthly EMI for home, car, or personal loans.
Crop Image
Crop JPG, PNG, or WebP images to custom dimensions or standard aspect ratios.
Related Categories
Finance
Free financial calculators to help you plan your investments and loans. Accurately estimate EMI, SIP returns, and GST with detailed breakdown schedules.
Health & Fitness
Health calculators for BMI, calories, body fat, and fitness goals.
Converters
Fast and reliable unit converters. Convert between units of length, weight, temperature, speed, area, and digital storage without needing complex formulas.
Developer Tools
Privacy-first utility tools for software developers. Format, minify, and validate JSON data entirely within your browser without sending sensitive data to a server.