Free Online Tools

Calculators, converters, and text tools — fast, free, and private. Everything runs in your browser, so nothing you type is ever sent anywhere.

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Age Calculator

Exact age in years, months, days

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Rent Receipts

HRA receipts, all 12 months

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Payslip Generator

Auto-filled from your CTC

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Percentage

Increase, decrease, of number

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Number to Words

Digits → Crore/Lakh breakdown

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Text Tools

Case conversion, word/char count

All Free Tools

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Age Calculator

Exact age in years, months, days, hours — plus zodiac & next birthday.

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Rent Receipt Generator

Generate HRA rent receipts — one, or all 12 months at once.

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Payslip Generator

Auto-fill a payslip from your CTC, then edit any line to match.

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Discount Calculator

Calculate sale price after % or flat discount.

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Percentage Calculator

% increase, decrease, of number, difference.

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Average Calculator

Mean, median, mode for any set of numbers.

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Number to Words Converter

Convert 100000000 → 10 Crore, with full breakdown.

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Character Counter

Count characters, spaces, letters, digits.

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Word Counter

Count words, sentences, paragraphs, reading time.

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Text Case Converter

UPPER, lower, Title, Sentence, camelCase and more.

Filing HRA claims this year?

Generate all 12 months of rent receipts in one go, then use the HRA Calculator to work out your exact tax-exempt amount before submitting proofs to your employer.

Generate Rent Receipts →HRA Calculator

Why Use Browser-Based Tools

Every tool on this page runs as client-side JavaScript — your inputs are processed directly in your browser and never transmitted to a server. That means no sign-up, no rate limits, and no privacy trade-off for quick everyday tasks like converting a number to words for a cheque, checking a discount before a purchase, or generating a rent receipt for HRA proof.

These tools complement the salary and tax calculators elsewhere on the site — for instance, the Payslip Generator uses the same underlying salary-structure logic as the In-Hand Salary Calculator, and the Rent Receipt Generator is built specifically to pair with the HRA Calculator for tax-filing season.

Frequently Asked Questions

Are these tools really free, with no sign-up?

Yes — every tool on this page runs entirely in your browser, with no account, no email, and no usage limit. Nothing you type is sent to a server or stored anywhere.

Can I use the rent receipt generator for HRA tax exemption?

Yes, the rent receipt generator produces properly formatted receipts you can submit to your employer for HRA exemption, including all 12 months at once. Keep in mind employers may also ask for your landlord's PAN if annual rent exceeds ₹1 lakh.

Is the payslip generator suitable for official use?

The payslip generator is designed for personal reference and quick estimates — to visualize how your CTC breaks down into a payslip format. For an actual, legally valid payslip, always use your employer's official payroll system.

How accurate is the age calculator?

It calculates your exact age down to the day (and optionally hours) using your date of birth, accounting for leap years correctly — the same method used for eligibility checks on age-restricted forms and applications.