The free online calculator, bot hosting & utility platform.
OneStepKit is a modern utility platform offering a collection of free browser tools for calculations, conversions, documents, productivity, games, reading, and other everyday tasks. Many tools work without an account; tools that need a server or third-party service are described on their own pages.
Fast Feedback
Many calculators run entirely in your browser, so simple calculations can update immediately without a server round-trip.
Privacy First
Many calculations and supported file workflows run locally in your browser. Server-backed tools, contact forms, analytics, and other network-dependent features are described separately.
24/7 Cloud Power
Run automated Telegram and Discord bots on isolated serverless cloud infrastructure with automatic keep-alive pings and zero maintenance.
Made by Chandrashekhar Kailas Hire
Built as a collection of small, practical browser tools with a focus on clear interfaces and useful interactions.
Explore Our Directory
🚀 Cloud & Bot Hosting
Deploy and keep your automated workers alive 24/7 with our Cloud Bot Hosting tool. Support for Telegram bots via setWebhook, Discord bots via Interactions Endpoint, automated keep-alive pingers, and local script file parsers with zero server fees or credit card requirements.
📚 3D Ebook Reader & Library
Immerse yourself in literature with our 3D Ebook Reader. Features realistic 3D double-sided page flip animations, ambient lighting, customizable typography, and full support for EPUB, PDF, Kindle MOBI/AZW3, Manga CBZ, FB2, and TXT books with 100% offline local storage privacy.
🎓 Student Tools
Solve equations with our Scientific Calculator, measure angles with the Digital Protractor, track course goals with the GPA Calculator, manage lecture attendance with the Attendance Calculator, estimate final marks with the Grade Predictor, plan study sessions with the Study Planner, and test typing skills with the Typing Speed Test.
💼 Work & Career
Build a professional CV with our Resume Builder, track salary ratios with the Salary Calculator, calculate Overtime Pay, log hours with the Timesheet Calculator, manage PTO Accruals or Notice Periods, and use specialized tools like Carpenter's Tools and Civil Engineering Tools.
💰 Financial Planning
Assess your home budget with our Mortgage Calculator, compare Loan Payments, plan Retirement Savings, calculate Paycheck Take-Home Pay, compute Percentages & Discounts, figure Sales Tax or Tips, and estimate tax benefits with our No Tax on Tips & Overtime Calculator.
🌿 Daily Life & Date Tools
Calculate your exact age with the Age Calculator, find date spans with the Date Calculator and Date Difference Calculator, count down to celebrations with the Birthday Countdown, track pregnancy milestones with the Pregnancy Calculator, run a high-precision Stopwatch & Timer, or verify connection metrics with the Internet Speed Test.
🔄 Unit Converters
Convert between metric and imperial units instantly: Length, Weight, Temperature, Volume, and Currency.
✨ Curiosity Lab
Make decisions with the Decision Wheel or Coin Flip, pick randomly with the Random Picker, run brackets with the Tournament Chooser, consult the Yes/No Oracle, check Love Compatibility, crack a Fortune Cookie, or generate an Excuse.
📄 PDF & Document Utilities
Read digital books with our 3D Ebook Reader, convert files with the PDF Converter, compress documents with the PDF Compressor, edit files with the PDF Editor, or merge/split pages with the Merge & Split PDF. You can also generate, scan, and manage dynamic links using our Dynamic QR Code Studio.
🏥 Medical & Health
Track your wellness with the Medical & Health Suite: calculate your BMI, BMR, TDEE, body fat percentage, daily calorie needs, and pregnancy due date, all in one place.