Embeddable converter widgets

Put a working unit converter on your own page with one iframe. Free, no sign-up, no tracking added by the widget.

Maintained by SM Arijul Islam · Updated

How to embed

Copy the snippet and replace the height if it feels cramped. The widget loads from this site, so updates appear automatically.

<iframe src="https://unitcalconv.com/embed/length.html" width="100%" height="420" style="border:1px solid #e5e0d8;border-radius:12px" title="Unit converter" loading="lazy"></iframe>

Please keep the attribution link in the widget. It is the only thing the embed asks for, and it is what keeps the converters free.

Available widgets

Length converterEmbed code includedWeight converterEmbed code includedTemperature converterEmbed code includedArea converterEmbed code includedVolume converterEmbed code includedSpeed converterEmbed code includedkg to lbsEmbed code includedlbs to kgEmbed code includedcm to inchesEmbed code includedinches to cmEmbed code includedcm to feetEmbed code includedCelsius to FahrenheitEmbed code includedFahrenheit to CelsiusEmbed code includedGB to MBEmbed code includedkm/h to mphEmbed code includedGBP to BDTEmbed code includedWire gaugeEmbed code includedGSM to ozEmbed code includedBTU to tonsEmbed code includedbar to MPaEmbed code included

Why embed rather than build your own

A unit converter looks trivial until someone checks the factors. The widgets here use defined values such as 25.4 mm per inch and 0.45359237 kg per pound, and each displays eight significant digits rather than a rounded figure. Embedding one keeps your page correct without maintaining a conversion table.

They also work offline once loaded, except the currency widgets, which fetch daily reference rates.