Calculators

Calculate percentages, loan payments, exact age and date differences, and measurement conversions instantly in your browser.

Free to useNo sign-up requiredWorks in your browserPrivacy focused

Calculate percentages, percentage increase or decrease, and sale discounts with tax in real time.

Estimate monthly loan or mortgage payments, total interest costs, and payoff savings from extra payments.

Convert between metric and imperial units for length, weight, temperature, area, speed, and data size.

Find exact age in years, months, and days or count total days and business days between two dates.

Need to compress or convert images instead?

Reduce JPG, PNG, and WebP file sizes and resize dimensions directly in your browser.

Tips, tutorials and guides to help you get the best results.

Learn practical ways to shrink JPG, PNG, and WebP photos by choosing the right dimensions, quality settings, and image formats.

Compare JPG and WebP file sizes, image quality, transparency support, and compatibility across browsers and devices.

Understand how word counts, reading time, and character limits work for articles, social media posts, SEO descriptions, and text messages.

Learn how to spot and fix trailing commas, missing quotes, comments, and formatting issues in JSON files quickly.

Combine multiple PDFs in order, extract custom page ranges, fix sideways scanned pages permanently, and turn photos into printable PDFs.

Understand monthly loan amortization, extra principal payment savings, discount and tax math, working-day counts, and measurement conversions.

Choose between random passwords and memorable passphrases, design print-ready SVG QR codes, and structure focused Pomodoro sessions.