Merondis
300+ Free Online Tools, Calculators, Converters and Utilities
No sign-up required. Fast, accurate, and available on any device.
Popular Tools
Subnet Calculator - CIDR, Subnet Mask & IP Range Calculator
Calculate network address, broadcast address, usable host range and more from an IP and subnet mask.
Macro Calculator
Calculate your daily protein, carb and fat targets based on your diet style and goal.
Finance (69)
Loan, EMI, GST, interest and financial calculators.
Health (35)
BMI, calorie and other health calculators.
PDF Tools (7)
Merge, split, compress and convert PDF files.
Converters (20)
Unit, currency and file format converters.
Developer (27)
JSON, Base64, regex and other developer utilities.
Text Tools (15)
Word counters, case converters and text utilities.
AI Tools (2)
AI-powered writing and productivity tools.
Date & Time (14)
Age, date difference and countdown calculators.
Security (5)
Password generators and security utilities.
Miscellaneous (8)
Other handy free tools.
Math (38)
Ratios, equations, statistics and other math calculators.
Construction (30)
Concrete, tile, paint and other material estimators for home projects.
Automotive (6)
Fuel economy, EV charging, tire size and car ownership cost calculators.
SEO Tools (12)
Meta tags, sitemaps, structured data and other on-page SEO generators.
Image Tools (7)
Resize, compress, convert and clean up images, all in your browser.
Education (5)
GPA, grade, attendance and study planning calculators for students.
Science & Engineering (5)
Electrical, chemistry and physics calculators for students and hobbyists.
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