About All Converters Online
Your trusted destination for free online calculators and unit converters. We provide fast, accurate, and mobile-friendly tools for everyday calculations.
Our Mission
At All Converters Online, we believe that everyone should have access to reliable calculation tools without the hassle of downloads, registrations, or fees. Our mission is to provide the most comprehensive collection of free online calculators and converters that work seamlessly across all devices.
Whether you're calculating your BMI, converting units for a recipe, planning your finances, or working on a school project, we're here to make your calculations quick and accurate.
Lightning Fast
Instant calculations with no waiting time or loading delays.
100% Free
All calculators and converters are completely free to use forever.
30+ Tools
Comprehensive collection of calculators and unit converters.
Mobile First
Optimized for mobile devices with responsive design.
What We Offer
Health & Fitness Calculators
- BMI Calculator with metric and imperial units
- Water intake calculator for optimal hydration
- Heart rate zone calculator for training
- Steps to distance converter
- Calorie needs calculator
- Sleep cycle calculator
Financial Calculators
- Loan EMI calculator for mortgages
- Compound interest calculator
- Salary to hourly converter
- Tip calculator for restaurants
- Discount calculator for shopping
- Percentage calculator
Unit Converters
Convert between metric and imperial units for length, weight, temperature, speed, area, volume, pressure, and energy. Perfect for international use, cooking, construction, and scientific calculations.
Why Choose All Converters Online?
No Registration Required
Start calculating immediately without creating accounts or providing personal information.
Privacy Focused
We don't store your calculations or personal data. Everything is processed locally in your browser.
Always Updated
Our calculators are regularly updated with the latest formulas and conversion rates.
European Focused
Designed with European users in mind, supporting both metric and imperial systems.