Which online calculators would you like to see added next?

Hi everyone!

I'm building Free Calculations, a free website with 70+ online calculators and converters for finance, health, math, education, and everyday needs.

The goal is to make calculations quick and accessible without signup, subscriptions, or usage limits.

We already have tools for EMI, SIP, income tax, GST, BMI, percentages, GPA, unit conversion, currency conversion, and more.

I'd love to hear from the community:

1. Which calculators do you use most often?

2. What calculator or converter do you find difficult to find online?

3. What features would make an online calculator more useful?

Your suggestions will help me decide what to improve and build next.

Thanks for sharing your feedback!

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