Professional Online Calculators & Converters
Access 15+ powerful, accurate calculators and converters—all free, mobile-optimized, and privacy-focused. From currency conversion using official ECB rates to health, finance, and everyday tools. No registration required.
All Calculators & Converters
Professional tools for every need—accurate, fast, and mobile-friendly
Currency Converter
Convert between 30+ currencies with official ECB rates via Frankfurter.dev. Real-time data, 12-hour cache, GCC pegs included.
BMI Calculator
Calculate Body Mass Index with WHO classification, BMI Prime, Ponderal Index, and healthy weight range. Visual gauge included.
Age Calculator
Calculate exact age in years, months, days, hours. Find next birthday, zodiac sign, and lifetime milestones.
Loan & EMI Calculator
Calculate monthly loan payments, total interest, and amortization schedule. Support for extra payments and refinancing scenarios.
Calorie & Macro Calculator
Calculate daily calorie needs (TDEE) and macronutrient breakdown for weight loss, maintenance, or muscle gain goals.
Pregnancy Due Date Calculator
Estimate due date from LMP, conception, ultrasound, or IVF. Includes trimester breakdown and detailed pregnancy timeline.
Universal Unit Converter
Convert length, mass, temperature, volume, speed, area, and more. Support for metric, imperial, and US customary units.
World Timezone Converter
Convert time between timezones with DST awareness. Perfect for scheduling international meetings and calls.
VAT & Sales Tax Calculator
Calculate VAT and sales tax for any country. Add or remove tax from prices. Includes standard rates by country.
Ovulation & Fertility Calculator
Calculate fertile window and ovulation day. Includes cycle tracking methods and conception tips.
Daily Water Intake Calculator
Calculate recommended daily water intake based on weight, activity level, and climate. Results in liters, ounces, and bottles.
Savings Goal Calculator
Calculate how long to reach your savings goal with compound interest. Compare different contribution amounts and rates.
Tip & Bill Split Calculator
Calculate tip amount and split bills among multiple people. Includes tipping guidelines by service and country.
Discount & Sale Price Calculator
Calculate final price after discount, coupon, tax, and shipping. Support for stacked discounts and percentage off.
Fuel Cost & Road Trip Calculator
Calculate fuel cost for trips. Support for MPG/L/100km, round trips, passengers split, and eco-driving tips.
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Why Choose Our Calculators?
Professional tools built with accuracy, speed, and privacy in mind
Accurate & Trusted
All calculators use verified formulas and official data sources. Currency rates from European Central Bank (ECB), health formulas from WHO and medical institutions.
Lightning Fast
Optimized for performance on all devices. Instant calculations, minimal loading times, and responsive design for seamless mobile experience.
Privacy First
All calculations happen in your browser. We don't store, track, or share your data. No cookies, no analytics, no third-party scripts.
Mobile Optimized
Every tool is fully responsive and touch-friendly. Works perfectly on smartphones, tablets, and desktops with adaptive layouts.
Multilingual Support
WPML compatible for translation into any language. Currency names, units, and interface elements fully localizable.
Accessible to All
WCAG 2.1 AA compliant. Keyboard navigation, screen reader support, and high contrast modes for users with disabilities.
Frequently Asked Questions
Everything you need to know about our calculators
Ready to Get Started?
Choose from 15+ professional calculators and converters. All free, accurate, and mobile-friendly. No signup required.
