Math & Science
Algebra, geometry, statistics, and chemistry calculators.
5 tools
Sorted by popularityAge Calculator
Calculate exact age in years, months, and days from any date of birth.
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Percentage Calculator
Calculate percentages — what is X% of Y, what % is X of Y, and percentage change.
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Tip Calculator
Calculate tip amount and split the bill between any number of people.
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Fraction Calculator
Add, subtract, multiply, and divide fractions — shows step-by-step working.
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Scientific Calculator
Full scientific calculator with trig functions, logarithms, powers, and more.
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Frequently asked questions
Are these math & science really free?
Yes — all tools on UtilDen are 100% free, no credit card, no signup.
Does my data stay private?
Every tool runs inside your browser. Nothing is sent to our servers.
Can I use these tools on mobile?
Absolutely. UtilDen is fully responsive and works great on phones and tablets.
How often are new tools added?
We ship new tools regularly. Bookmark the site or check back often.