Common questions about our calculators.
Yes! All calculators on OmniCalculator Pro are 100% free. No signup, no fees, no hidden costs.
Our calculators use standard mathematical formulas and are tested for accuracy. They're suitable for everyday use, education, and general business purposes.
No. All calculations happen locally in your browser. We don't collect, store, or transmit any of your input data.
Absolutely! Our website is fully responsive and works great on smartphones, tablets, and desktop computers.
We use the standard BMI formula: BMI = weight(kg) / height²(m²). For imperial units, we convert first then calculate.
We use the Mifflin-St Jeor equation, which is considered the most accurate for estimating basal metabolic rate.
Yes! We love hearing from users. Visit our contact page to submit your suggestions.
Currently, we're a web-only platform. Our website works great on mobile browsers — just bookmark it for quick access!
Can't find what you're looking for? Contact us and we'll be happy to help!