About Convertz
Last updated:
A free, privacy-first platform for converting currencies, cryptocurrencies, precious metals, units, and files — built to be fast, accurate, and accessible to everyone.
Our Story
Convertz was built by Andrew, a developer who got tired of juggling multiple websites and apps just to convert currencies, check crypto prices, or change a file format. The idea was simple: one site that handles every kind of conversion, without sign-ups or ads, and without uploading your files anywhere.
What started as a currency converter has grown into a comprehensive conversion platform covering exchange rates, cryptocurrency prices, metal valuations, 26 unit categories, and browser-based file conversion. Andrew writes the code, chooses the data sources and maintains the reference content described below.
How We Check Accuracy
Unit conversions
Every factor is the exact legal definition where one exists (1 inch = 2.54 cm, 1 pound = 0.45359237 kg, 1 US gallon = 231 cubic inches) or the value published by NIST and the BIPM. Each unit page lists the sources for its factors. An automated check, run on every build, recomputes each factor from its definition and re-checks every number quoted in the explanations; the build fails if any disagree. Factors were last reviewed on .
Medical lab units
Lab-result factors (glucose, cholesterol, creatinine and others) are calculated from each substance's molar mass, using IUPAC standard atomic weights, and compared with published clinical conversion tables (Young, 1987; Mayo Clinic Laboratories). The automated check recomputes them from the chemical formulas. Last reviewed . Not yet reviewed by a licensed clinician or laboratory scientist. The converter only changes units; it doesn't interpret results and isn't medical advice.
Currency rates
Mid-market rates from Open Exchange Rates, refreshed hourly. If that service is unavailable, the converter falls back to the European Central Bank reference rates via Frankfurter, which the ECB publishes once each working day. Currency pages also show the ECB rate and its date as a reference point. Mid-market rates don't include the margin banks and card issuers add.
Crypto prices
Volume-weighted market prices for the top 100 coins from CoinGecko, fetched every few minutes and cached for up to 15 minutes. Bitcoin and Ethereum are also checked against Gold-API.com.
Metal prices
Gold, silver, platinum and palladium use spot prices from Gold-API.com; copper and aluminum use CME futures prices. Prices are cached for up to about an hour. The other 13 metals have no free live feed, so they use a fixed indicative benchmark and are labelled “Benchmark” in the calculator. Weights use the exact troy ounce (31.1034768 g).
File conversion
Files are converted in your browser by WebAssembly builds of the open-source FFmpeg and ImageMagick projects and by the browser's own image encoders. Each format page states the exact settings used (for example JPEG quality 92, or H.264 at CRF 23).
Found a wrong number? Email convertz.completeconversions@gmail.com with the page and the source you're comparing against, and it will be checked and corrected. Convertz provides reference rates for information only; confirm with your bank or provider before making financial decisions.
What We Stand For
Privacy First
No accounts. File conversions happen entirely in your browser, so your files never leave your device. We use Google Analytics, with IP anonymisation and advertising features turned off, to count visits. See the privacy policy.
Always Free
Every feature on Convertz is free to use with no limitations. No premium tiers, no paywalls, no hidden fees.
Sourced Data
Every rate and factor has a named source and a stated refresh interval, listed above. Where we can't get a live price, we say so.
Accessible Everywhere
Works on any device with a browser. No downloads, no installations. Designed for speed on both desktop and mobile.
Beyond Conversions
Convertz is more than a converter. We publish educational content to help people understand currencies, crypto markets, precious metals, and technology:
Our Editorial Process
Blog posts, podcast episodes and video scripts on Convertz are drafted with AI assistance and reviewed by a person before publishing. Reference content on the converter pages (formulas, pitfalls, format notes) is checked against the cited sources, and its numbers by the automated check.
Our process:
- Research — Topics are selected based on user needs, search trends, and market developments.
- Creation — Content is drafted with AI assistance, combining data analysis with human editorial direction.
- Review — All content is reviewed and edited for accuracy, with facts verified against authoritative sources.
- Updates — Published content is periodically reviewed and updated to reflect current information.
We believe in transparency about our process. AI is a tool that helps us produce more comprehensive content, faster — but every piece is directed, reviewed, and approved by a human.
Built by Andrew
Andrew
Founder of Convertz
Developer and creator of Convertz. Andrew oversees all development, content strategy, and editorial direction for the platform. Convertz exists to solve a simple problem: one free, fast, private tool for every type of conversion.
Get in Touch
Have questions, feedback, or suggestions? We'd love to hear from you.