Math

Math Calculators

Simple math tools for everyday calculations. Percentage, age, dates, and more — built for quick answers without spreadsheets.

Math PER

Percentage Calculator — What is X% of Y, % Change, % Increase

Free percentage calculator: find what percent one number is of another, calculate percentage change, increase, …

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Math DAT

Date Calculator — Days Between Dates, Add/Subtract Days, Countdown

Calculate days between two dates, add or subtract days from a date, and count down to any deadline. Includes …

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Math AGE

Age Calculator — Exact Age in Years, Months and Days

Calculate your exact age in years, months, days, weeks, and hours from your date of birth. Find out how many …

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About Calxo. Who runs this site

Calxo (calxo.in) is a free, ad-light calculator platform built for Indian users. Every tool covers EMI, SIP, GST, income tax, FD, PPF, salary, and conversions, using Indian rules, INR, and current tax slabs (not generic global formulas).

Publisher

Calxo is operated by Vignesh Sampath Kumar, an SEO Lead at PipeRocket Digital in Chennai and the founder of EVBlogs.in. Vignesh personally writes and reviews every calculator page.

Editorial standards

  • Formulas verified against RBI, Income Tax Department, CBDT, and GST Council sources
  • Updated the same week tax slabs or rules change
  • No paid placements; no affiliate links inside calculators
  • All calculations run in your browser; inputs are never stored

Contact

Corrections, suggestions, or partnership: avmedianews321@gmail.com

Based in India. Founded 2026.

Disclaimer: Calxo is a calculation tool, not financial, legal, or tax advice. For decisions that affect your money in any meaningful way, talk to a SEBI-registered financial advisor or a Chartered Accountant. We update formulas the same week laws change, but we're not liable for outcomes from calculator outputs. Read our Terms and Privacy Policy.