Free Online Micro-Utilities

My Day To Day Tools is a collection of simple, free tools for jobs that come up again and again: working out a mortgage payment, converting a file from one format to another, or turning a handful of photos into a single PDF.

You will find calculators for money questions, converters for developers and spreadsheet users (JSON, YAML, CSV, Base64 and URL encoding), and small helpers for writing and web work. Every tool is a single page: open it, use it, and get your answer. There is nothing to install and no account to create.

Privacy matters to us. The converters and the image-to-PDF tool run entirely inside your web browser, so the text and files you use are never uploaded to our servers.

Mortgage Calculator

Work out your monthly mortgage payment and see a year-by-year breakdown of principal and interest. Pick your state for state-specific pages.

Compound Interest Calculator

See how savings or investments can grow over time with regular monthly contributions.

JSON ⇄ YAML Converter

Convert JSON to YAML or YAML to JSON, in both directions, with one click to swap.

JSON ⇄ CSV Converter

Turn a JSON list into a spreadsheet-ready CSV, or turn CSV back into JSON.

Base64 Encoder & Decoder

Encode text or JSON to Base64 and decode it back, with full support for accents and emojis.

URL Encoder & Decoder

Make text safe for web addresses, or turn %20-style text back into something readable.

Image to PDF

Combine JPG, PNG, WEBP and BMP images into one PDF. Reorder the pages, then download.

JSON to TypeScript

Generate TypeScript types from a JSON example, handy when working with API responses.

Keyword Density Analyzer

Paste your writing to see the word count and which words you use most often.

Why Use Our Tools?

  • 100% Free Forever: No paywalls, no subscriptions.
  • Lightning Fast: Built on modern web technologies ensuring zero lag.
  • Privacy First: Most of our tools process data locally in your browser.