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QuickTool UA

17 free tools • 3 languages

Free online calculators and useful tools

Find the calculator, formatter, or validator you need, enter your values, and get a result without extra steps. No registration required.

Search all 17 tools

Free
No registration
Browser-based
No external data needed

Popular tools

Quick access to tax, banking, loan, and JSON tasks.

VAT Calculator

Extract or add tax and get a clear result from the amount you enter.

IBAN Validator

Check the format and checksum of a Ukrainian IBAN before sending payment details.

Loan Calculator

Compare the payment, interest, and total cost using the terms you enter.

JSON Formatter

Format, minify, and check a JSON structure before you use it.

All tools by category

Choose a task and go straight to the tool that can help you complete it.

Finance & Taxes

Check amounts, tax rates, and bank details, or estimate loans and savings growth.

VAT Calculator

Extract or add VAT and compare the result with the amount you enter.

IBAN Validator (Ukraine)

Check an IBAN's format and checksum using the MOD-97 algorithm.

Loan Calculator

Estimate an annuity payment, total interest, and total loan cost.

Compound Interest

Estimate growth over time using a rate and recurring contributions.

Percentage Calculator

Find a share, a percentage of a number, or a discount in a few steps.

Amount in Words

Turn an amount into words for a document, receipt, or contract.

Utilities

Plan dates, compare units, and create random values or passwords.

Body Mass Index

Get an approximate BMI from height and weight; it is not a medical diagnosis.

Date Difference

Find the interval between dates in days, weeks, and months.

Age Calculator

Calculate age precisely in years, months, and days from a date of birth.

Password Generator

Create a random password of the selected length directly in your browser.

Random Numbers

Choose numbers within a set range for a draw or a quick test.

Unit Converter

Convert length, weight, and data volume using standard coefficients.

When to use these tools

Start with a specific task — the result appears as soon as you enter your values.

Before a financial transaction

Check a calculation, compare interest, or confirm that a number has the correct format.

When working with data

Format JSON, transform text, or inspect a structure before sharing it.

For everyday tasks

Count days, convert units, or prepare a set of random values.

Privacy and limitations

Tools that run locally process the values you enter in your browser and do not require an account. Do not enter confidential data unless you are authorized to use it.

Results depend on your values and the formulas used. We do not claim constant updates to rates, tax rules, banking, market, or medical data: check important information against current official sources.

Algorithms and automated results do not replace professional, financial, legal, or medical advice and do not guarantee transaction approval or regulatory compliance.

Frequently asked questions

Do I need an account?

No. The tools are free, require no registration, and are designed to work in a modern browser.

How is entered data handled?

Tools that run locally process values in your browser and do not send them to a server. Do not enter data you are not authorized to use, and consider the risks of browser extensions and the device itself.

How much can I rely on the results?

Results depend on the values you enter and the formula used. We do not claim constant updates to rates, tax rules, banking, or medical data. Check important decisions against current official sources.

Does IBAN validation confirm that an account exists?

No. The tool checks the format and MOD-97 checksum, but it does not confirm that an account exists or that funds belong to the person checking it.

Which languages are available?

The main interface and tool pages are available in Russian, Ukrainian, and English. You can switch languages in the site header.

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