
OneKitly
1,800+ free online calculators, converters and tools
Screenshots



OneKitly offers a vast collection of over 1,800 free online tools, including calculators, converters, and utilities for various needs. This platform allows users to perform a wide array of tasks without the need for signing up or encountering limits, as everything runs directly in your browser.
It addresses the problem of needing specialized tools for various computations and conversions by consolidating them into one accessible location. From mathematical and financial calculations to developer tools and everyday utilities, OneKitly provides instant solutions.
Key features include:
- Extensive Tool Library: Access to 1,800+ tools across 81 subcategories.
- Diverse Categories: Tools spanning Maths, Developer, Finance, Health, Science & Engineering, Hobbies & Fun, Home & DIY, Business, Marketing & SEO, Text & Language, Sport, Real-estate, Car, File, Image & Design, and Security.
- No Signup Required: Enjoy full functionality without creating an account.
- Browser-Based: All tools operate within your web browser for convenience.
- Featured Tools: Quick access to popular tools like Percentage Calculator, JSON Formatter, Mortgage Calculator, BMI Calculator, and Word Counter.
- Security Tools: Includes utilities like a Password Generator.
OneKitly is designed to be a comprehensive resource for anyone needing quick and reliable online tools for personal, professional, or academic use, simplifying complex tasks and everyday calculations.
Related products
View all
AntForms
Unlimited free submissions + free analytics + integrations +

Excelerator Password 2.0
Lock and unlock Excel workbooks without opening Excel

AthleteMatrix
Your personal coach based on data from your everyday apps
More categories
All categoriesLaunched in Week 42, 2026
See the week
Sotto
Private voice journal with AI structuring

Modern Authentication UI
A modern, reusable authentication UI built with SwiftUI

CheckPassportPhoto
Private passport photo checks and cropping in your browser

Petabyte
Rent verified GPUs by the hour, or earn from hardware you al










