Figuring It Out: OSF, LF, and TF Explained

Numerals (or fig­ures) can take var­i­ous forms. The figure style you choose ought to be appro­pri­ate to the project you are work­ing on. Read­abil­ity is key. But which style is best for which pur­pose? There are two main forms, old­style fig­ures (OSF) and lining fig­ures (LF). Each can come in tab­u­lar and pro­por­tional widths. See some exam­ples above.

Oldstyle Figures

Old-Style figures are most appropriate in running text.Old­style fig­ures are Arabic numer­als vary­ing in height and posi­tion. Some sit on the base­line while others descend beneath the base­line. The 6 and 8 are com­monly the tallest fig­ures and the 3,4,5,7, and 9 descend below the base­line, while the 0, 1, and 2 are roughly the same height of the low­er­case let­ters. This fea­ture allows them to har­mo­nize with other words on a page of text with­out becom­ing a dis­trac­tion to the reader. So old­style fig­ures are most appro­pri­ate in books or any run­ning text. Old­style fig­ures are also known as non-​aligning fig­ures, text fig­ures or old­style numerals.

Lining Figures

Lining figures are most appropriate in texts where alignment is crucial.Lining fig­ures are derived from old­style fig­ures. They are a modern style with all fig­ures at a common size and posi­tion and even height as the upper­case let­ters (but some­times smaller and lighter than the cap­i­tals). Today, most fonts use these as default. Lining fig­ures sit on the base­line as opposed to old­style fig­ures that appear at dif­fer­ent heights and posi­tions. They opti­cally align along a height line and the base­line. The best appli­ca­tions are busi­ness reports, forms, tables or any place where align­ment is cru­cial. Lining fig­ures are also known as reg­u­lar numer­als or titling figures.

Tabular FiguresTabular figures

Tab­u­lar fig­ures are mono-​width, they align ver­ti­cally and thus appear in doc­u­ments that com­pare numer­i­cal data in columns. Each figure shares the same width and space on both sides.

Proportional FiguresProportional figures

Pro­por­tional fig­ures are dif­fer­ent in their total char­ac­ter width. They are spaced to fit together more like let­ters. For instance, the figure 1 is very narrow like the letter l and takes up less width than the number 6. Because their spac­ing appears more even, these fig­ures are best in texts and head­ings where colum­nar align­ment is not necessary.

Now that you know the dif­fer­ences between the two fig­ures styles and their two widths, you know what to buy for your par­tic­u­lar needs. For­tu­nately, some foundries (like Font­Font) make it simple: every figure style that has been designed for a par­tic­u­lar type­face is included in each pur­chasable pack­age. Open­Type, though, makes it even sim­pler. Most Open­Type fonts include all avail­able figure styles within a single font. So there’s no switch­ing between fonts to get to the right fig­ures. Read more about the con­ve­niences of the format on our new Open­Type page.

ShareThis

Tags: , ,

19 Comments:

When would tab­u­lar old­style fig­ures be the right choice? At first sight, it seems they’re a redun­dant com­bi­na­tion.

Posted by John Muir on Apr. 4, 2008

Great ques­tion, John. Tab­u­lar old­style is cer­tainly the least common vari­ant. I guess it would be appro­pri­ate if you wanted to create colum­nar data that was a little more orna­men­tal or “old style” as it were. It’s more of an aes­thetic choice in that instance.

Posted by Stephen Coles on Apr. 4, 2008

I’ll ask the tech­ni­cal ques­tion - how do I make my appli­ca­tion use each type of fig­ures?

Posted by Cameron Bales on Apr. 4, 2008

Tab­u­lar old­style might work well in a restau­rant or pub menu, for the prices. Or for tour­na­ment sports score­sheet columns — darts or golf league. Some sit­u­a­tion where you want an old-​timey or dec­o­ra­tive feel but need num­bers aligned in a grid.

Posted by Russell Gorton on Apr. 4, 2008

Thanks for the great arti­cle! It never quite stuck with me why old­style fig­ures vary in height and posi­tion, but read­ing that they “har­mo­nize with other words on a page” has made every­thing clear.

Posted by Dan Sauve on Apr. 4, 2008

Thanks for the con­cise yet very infor­ma­tive post! This is one of the daily things we tend to over­look, thanks for explain­ing it :)

Posted by Agos on Apr. 5, 2008

Excel­lent arti­cle! I was won­der­ing, could you per­haps rec­om­mend some inex­pen­sive fonts for per­sonal use? I already have the Adobe Type Clas­sics for Learn­ing, but I want more! ;)

Posted by Dan Villiom Podlaski Christiansen on Apr. 5, 2008

A couple of weeks ago I uncov­ered my old Macmil­lan log tables from the 70s and the ques­tion about “tab­u­lar old­style” made me go and fish them out of the recy­cling bin. As I sus­pected, the bodies of the tables are all in tab­u­lar old­style. I sup­pose this could have been delib­er­ate, to give read­ers a visual cue as they wan­dered through the blocks of oth­er­wise undis­tin­guished fig­ures. Look­ing at the dates for this book though, it’s a 1970 reprint of an 1908 edi­tion so I wonder if old­style fig­ures might have been the only option a hun­dred years?

Posted by Michael Davies on Apr. 5, 2008

When I design a more traditional-​looking pub­li­ca­tion and use old­style fig­ures, I will use their pro­por­tional vari­ant in the text, and tab­u­lar vari­ant in the table of con­tents. If there are other tables, too, espe­cially ones with lots of num­bers, I will prob­a­bly go tab­u­lar lining.

Posted by András Puiz on Apr. 5, 2008

Meta Pro might have been a better choice for illus­trat­ing the dif­fer­ences here. I believe its tab­u­lar lining numer­als have styl­is­tic dif­fer­ences (like a foot on the “1”) to com­pen­sate for the uni­form spac­ing.

Posted by Maurice Kessler on Apr. 5, 2008

i found this on delicious- thanks so much for the brief intro- i actu­ally learned some­thing great- and will chew on it for the next days…

Posted by marko on Apr. 5, 2008

I’ve been told that lining numer­als should also be used when the sur­round­ing text is all in cap­i­tals. But I imag­ine that this applies only for “simple cap­i­tals”, and that for small-​caps, which don’t align, old-​style numer­als are better. Any thoughts?

Posted by Amar on Apr. 9, 2008

Thank you all for your com­ments and per­sonal addi­tions to the arti­cle.

@ Cameron Bales: That depends on which appli­ca­tion you’re using. If you’re in Adobe CS apps or Quark 7, it’s easy to access figure styles from Open­Type fonts via the Open­Type menu. In other appli­ca­tions, you’ll want to use Post­Script or True­Type fonts, each one of which has a dif­fer­ent figure style. That’s what the “TF” or “OSF” means in some font names.

@ Russel Gorton : That’s right. I for myself like to use TOSF usu­ally for smaller list­ings with no more than ten rows. Finally all these tips in my arti­cle are not laws and the cor­rect use depends on the designer and con­tent.

@ Dan Vil­liom Pod­laski Chris­tiansen: The Adobe Fonts def­i­nitely are a good start. You can see our per­sonal rec­om­men­da­tions in the Staff Picks list. You will also find some very good hand-​picked Open­Type fonts on our new Open­Type page.

@ Amar: I totally agree. You also should use lining fig­ures in an upper­case sur­round­ing.

Posted by Ivo Gabrowitsch on Apr. 10, 2008
SKAGGS — attract:engage:evolve » Blog Archive » Old Style and Lining Figures Explained referenced this article:

[…] wonder what form of numer­als (or fig­ures) is cor­rect for the sit­u­a­tion at hand? This great tip from FontShop explains it all. Extended type­faces will typ­i­cally include both old­style and lining […]

Anatomy of a print design « scattershot genius; referenced this article:

[…] light-​hearted mood in keep­ing with the sub­ject of the play, but I also needed a font that had old­style fig­ures, ele­gant ital­ics, and a full set of lig­a­tures. Adobe Caslon fit the bill as a full-​featured font […]

BySoAndSo » Oldstyle Figures, Lining Figures, Tabular Figures referenced this article:

[…] has a nice little blog post on their blog The Font­Feed about under­stand­ing when to use Old­style Fig­ures, Lining Fig­ures and […]

I’ve been taking some courses in typog­ra­phy, and I am being taught that if old style fig­ures are not avail­able in a font (as in the “Mother Teresa” text exam­ple above), that I should drop the point size of the lining fig­ures by about 10% so that they look better (i.e., not so promi­nent).
Any com­ments?
This is counter-​intuitive to me; I can see the dif­fer­ence, though slight, in the weight of the face.

Posted by cbGrab on May. 15, 2008

Your intu­ition is cor­rect. Adjust­ing the pt size is not a good idea because you’re always going to get a weight dif­fer­en­tial. How notice­able it is depends on the type­face, but in gen­eral the lighter weighted num­bers will be as much (if not more) as a dis­trac­tion as the tall num­bers.

Posted by Stephen Coles on May. 15, 2008

This isn’t exactly rel­e­vant, but — the recipe exam­ple should have aligned the num­bers flush right and the words for each ingre­di­ent flush left, with a nice em space between the two columns. This was usu­ally done in cook­books, back in the day. The big cook­ing mags — Bon Appetit, Gourmet, and Food and Wine — still do.

And, as long as I’m here… while read­ing text set in a serif face, I still come across num­bers, espe­cially dates, set in lining fig­ures but with a low­er­case letter l in place of the figure 1. The two kern dif­fer­ently, and the letter is often taller and lighter than the figure. I think that’s a holdover from, again, back in the day, when many type­writ­ers didn’t have a number 1. We were taught to sub­sti­tute the letter. Are most of the people inputting copy over 50?

Posted by Chris Purcell on Feb. 3, 2009

Post a comment:

The FontFeed

The FontFeed is a daily dispatch of recommended fonts, typography techniques, and inspirational examples of digital type at work in the real world. Eat up.

Archives

The FontFeed RSS
The FontFeed Comments RSS

Close