# Spline Sans Mono font > A monospaced grotesque with a 300–700 variable weight axis and italics, built for interfaces, checkouts and code. Spline Sans Mono is a monospaced grotesque drawn by Eben Sorkin and Mirko Velimirović for user interfaces, checkout flows and programming. Spline Sans Mono is a variable font with a weight axis from Light 300 to Bold 700 and matching italics, ten styles in all. Spline Sans Mono is released under the SIL Open Font License 1.1. ## Facts - Classification: [Monospace](https://trendhub.net/fonts/category/monospace) - Designed by: Eben Sorkin, Mirko Velimirović - License: SIL Open Font License 1.1 (https://openfontlicense.org/open-font-license-official-text/) - Styles: 10 (Light 300, Regular 400, Medium 500, SemiBold 600, Bold 700; with italics) - Variable font: Yes (wght 300–700) - Glyphs: 619 - Character sets: latin, latin-ext - Last updated: 2025-09-10 - Official source: https://fonts.google.com/specimen/Spline+Sans+Mono - Page: https://trendhub.net/fonts/spline-sans-mono - Tagged for: Interfaces, Code, Tech ## About Spline Sans Mono Spline Sans Mono is a monospaced sans serif: every character sits in a cell of the same width. The specimen shows a plain grotesque skeleton adapted to that fixed cell — the lowercase i gains a top arm and a flat foot, and l ends in a curved tail, so narrow letters fill their space. According to the official notes, small notches called "thorn" traps are cut where strokes meet and come into view at larger sizes. The family is variable along a weight axis, 300 to 700, with five named weights (Light, Regular, Medium, SemiBold, Bold) in roman and italic, ten styles in total. Its 619 glyphs cover Latin and Latin Extended. The project began with the Spline team; Eben Sorkin and Mirko Velimirović drew the typeface for Sorkin Type, and it is published under the SIL Open Font License 1.1. ## License SIL Open Font License 1.1. Copyright 2022 The Spline Sans Mono Project Authors (https://github.com/SorkinType/SplineSansMono) Allowed: - Use the fonts in personal and commercial work, in print, on the web and in apps. - Modify the fonts and build new versions from them. - Redistribute the fonts, on their own or bundled with software, as long as the license text and copyright notice go with them. Conditions: - The fonts cannot be sold by themselves. - A modified version must stay under the same license and cannot use a Reserved Font Name without the copyright holder's permission. - The authors' names cannot be used to promote a modified version without permission. Summary only, not legal advice. Full text: https://openfontlicense.org/open-font-license-official-text/ ## Where it works - **Code editors and terminals**: Fixed-width characters keep indentation and columns aligned, and the range of weights allows bold keywords or light comments in a syntax theme. - **Checkout and payment forms**: Checkout flows are one of the stated purposes of the design: card numbers, totals and order codes line up digit by digit. - **Data labels in interfaces**: Medium and SemiBold give timestamps, IDs and small labels enough weight on dense screens. - **Large technical headings**: Set big, the notched joins described in the official notes become a visible detail in titles and hero text. - **Documentation with code samples**: An italic in every weight marks comments and emphasis without leaving the family. ## Things to know - **Two variable files**: The download holds one variable file for the roman and one for the italic. Each covers the full 300 to 700 weight range; static instances are available from the official source. - **Weight stops at Bold**: The lightest named weight is Light 300 and the heaviest Bold 700. There is no Thin, ExtraBold or Black. - **Latin only**: Spline Sans Mono covers Latin and Latin Extended. It has no Cyrillic or Greek subset. ## FAQs ### Is Spline Sans Mono free for commercial use? Yes. Spline Sans Mono is published under the SIL Open Font License 1.1, which allows personal and commercial use, modification and redistribution. The font cannot be sold on its own, and modified versions stay under the same license. ### Who designed Spline Sans Mono? Spline Sans Mono was designed by Eben Sorkin and Mirko Velimirović. The official notes add that the Spline team started the project and that the manufacturer is Sorkin Type. ### Is Spline Sans Mono a variable font? Yes. Spline Sans Mono is a variable font with one axis, weight, running from 300 to 700, in separate roman and italic files. ### How many weights does Spline Sans Mono have? Spline Sans Mono has five named weights: Light 300, Regular 400, Medium 500, SemiBold 600 and Bold 700. Each has an italic, which makes ten styles. ### Is Spline Sans Mono good for programming? Spline Sans Mono is monospaced and programming is one of the uses it was built for, alongside interfaces and checkout screens. Italics in every weight are available for comments. ### What fonts pair well with Spline Sans Mono? Spline Sans, by the same designers, pairs with Spline Sans Mono: both run from weight 300 to 700, so text and code can be matched weight for weight. --- Source: https://trendhub.net/fonts/spline-sans-mono (trendhub)