› Convert anything, instantly

// Free instant converters for length, weight, temperature, currency, color, code, BMI, and more — 522 tools across 29 categories. No signup, no clutter.

Lengthcm→inches Weightkg→lb Temperaturecelsius→fahrenheit Lengthm→feet Lengthmiles→km Volumeliters→us-gallons Speedkmh→mph Pressurebar→psi Energykcalories→kjoules Powerkilowatts→hp-mechanical

user@convertitive:~$ ls ./popular

./bmiBMI calculator ./percentPercentage calculator ./mortgageMortgage calculator ./ageAge calculator ./usd→eurCurrency converter ./passwdPassword generator ./epochUnix timestamp ./qrQR code generator ./wcWord counter ./interestCompound interest ./due-dateDue date calculator ./compressImage compressor

./extract

Turn a PDF into a clean Excel file

Bank statements, invoices, receipts — typed columns, verified math, no Text-to-Columns wrestling. Free preview, no signup required to try it.

Try Extract →

./extract — paidAI: any PDF → clean Excel, from $9 ./methodologyHow we compute every result ./guidesLong-form guides ./vsX vs Y comparisons ./glossary100 definitions you can cite ./dataOriginal analyses

./why-convertitive

Built for answers you can verify

Convertitive is more than a collection of input boxes. Each tool is paired with plain-language guidance, a clear calculation model, and links to the references behind the result. Use the tool for the immediate answer, then use the methodology and guides when the number needs to be explained, checked, or cited.

Fast and private by default

Most free converters and file tools run in your browser, so the calculation starts as you type and your input stays on your device. Convertitive Extract is the clearly marked exception: it uploads documents for server-side table extraction.

Formulas with provenance

Unit factors follow NIST and BIPM references; other tools explain their formulas, assumptions, precision limits, or data source. Read the methodology before citing a result.

A human-reviewed reference

The editorial layer includes long-form guides, comparisons, and definitions written for real decisions rather than keyword volume. Learn more about the editor and correction process onAbout Convertitive.