Free online tools
25 small, fast utilities that run entirely in your browser — nothing is uploaded to a server, no sign-up required. Built and maintained by Ajay Kumar.
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Business & freelance tools
App & Website Cost Estimator
Ballpark cost, hours and timeline for a website, web app, mobile app, marketplace or AI project.
AI Automation Savings Calculator
See how much time and money automating a repetitive task with AI or n8n would save, and the payback period.
Freelance Hourly Rate Calculator
Work out the hourly, daily and monthly rate you need to hit your income goal after tax, expenses and time off.
Free Invoice Generator
Create a clean invoice with line items and tax, then print it or save it as a PDF - nothing is uploaded.
Email Signature Generator
Create a professional HTML email signature and copy it straight into Gmail, Outlook or Apple Mail.
India finance calculators
SIP Calculator
Estimate the future value of a monthly SIP, with optional yearly step-up and a year-by-year growth table.
EMI Calculator
Monthly EMI, total interest and a year-wise repayment schedule for home, car and personal loans.
GST Calculator
Add or remove GST at any rate, with CGST/SGST or IGST split. Updated for the 5% / 18% / 40% slabs.
Income Tax Calculator (New vs Old Regime)
Compare tax under the new and old regimes for FY 2026-27 and see which one saves you more.
Calculators
Percentage Calculator
X% of Y, what percent X is of Y, and percentage increase or decrease.
ROI Calculator
Calculate return on investment and annualized ROI from an initial investment and final value.
BMI Calculator
Check your Body Mass Index and weight category in metric or imperial units.
Unit Converter
Length, weight, temperature, area, volume, speed and data size.
Everyday utilities
QR Code Generator
Turn any URL or text into a downloadable QR code, with custom colors.
Image Compressor & Resizer
Compress and resize JPG/PNG/WebP images in your browser, no upload needed.
Word & Character Counter
Words, characters, sentences, paragraphs and reading time as you type.
Password Generator
Generate strong, random passwords with custom length and character sets.
Developer tools
JSON Formatter & Validator
Format, minify and validate JSON with clear error messages.
Base64 Encoder & Decoder
Encode and decode Base64 with UTF-8 and URL-safe support.
Regex Tester
Test regular expressions live with match highlighting, capture groups and flags.
JWT Decoder
Decode a JSON Web Token's header and payload and check expiry - entirely in your browser.
Cron Expression Explainer
Translate a cron schedule into plain English and see its next run times.
Unix Timestamp Converter
Convert Unix timestamps to readable dates and back, in seconds or milliseconds.
UUID Generator
Generate v4 (random) and v7 (time-ordered) UUIDs in bulk, with copy and format options.
Color Palette Generator
Generate harmonious 5-color palettes from any base color, with HEX values and CSS variables.
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