Sizing for Truform Classic Medical knee highs in extended sizes, for wider calves and ankles. Toggle inches/cm and tap a measurement to highlight your size per Truform's official charts.
Truform Classic Medical Extended Sizes Size Chart
Knee High (Extended Sizes)
Tap any measurement below to see your full size details.
👆 Tap a value in the table to highlight your size.
Measurements
| Measure | Small | Medium | Large | X-Large | 2X-Large | 3X-Large | 4X-Large | 5X-Large | 6X-Large | 7X-Large |
|---|---|---|---|---|---|---|---|---|---|---|
| Ankle | 17.8 - 21 cm7" - 8.25" | 21.2 - 24.4 cm8.375" - 9.625" | 24.7 - 27.9 cm9.75" - 11" | 28.2 - 31.4 cm11.125" - 12.375" | 31.7 - 35 cm12.5" - 13.75" | 31.7 - 35 cm12.5" - 13.75" | 33 - 36.2 cm13" - 14.25" | 36.2 - 40.6 cm14.25"-16" | 38.1 - 43.2 cm15"-17" | 40.6 - 45.7 cm16"-18" |
| Calf | 27.9 - 35.5 cm11" - 14" | 34.2 - 40.6 cm13.5" - 16" | 39.3 - 45.7 cm15.5" - 18" | 44.4 - 50.8 cm17.5" - 20" | 49.5 - 55.9 cm19.5" - 22" | 54.6 - 61 cm21.5" - 24" | 59.7 - 66 cm23.5" - 26" | 63.5 - 68.9 cm25"-27" | 66 - 71.1 cm26"-28" | 68.6 - 73.6 cm27"-29" |
| Length to knee | 38.1 cmGREATER THAN 15" | 38.1 cmGREATER THAN 15" | 38.1 cmGREATER THAN 15" | 38.1 cmGREATER THAN 15" | 45.7 cmUP TO 18" | 45.7 cmUP TO 18" | 45.7 cmUP TO 18" | 45.7 cmUP TO 18" | 45.7 cmUP TO 18" | 45.7 cmUP TO 18" |
Small
Ankle
17.8 - 21 cm7" - 8.25"
Calf
27.9 - 35.5 cm11" - 14"
Length to knee
38.1 cmGREATER THAN 15"
Medium
Ankle
21.2 - 24.4 cm8.375" - 9.625"
Calf
34.2 - 40.6 cm13.5" - 16"
Length to knee
38.1 cmGREATER THAN 15"
Large
Ankle
24.7 - 27.9 cm9.75" - 11"
Calf
39.3 - 45.7 cm15.5" - 18"
Length to knee
38.1 cmGREATER THAN 15"
X-Large
Ankle
28.2 - 31.4 cm11.125" - 12.375"
Calf
44.4 - 50.8 cm17.5" - 20"
Length to knee
38.1 cmGREATER THAN 15"
2X-Large
Ankle
31.7 - 35 cm12.5" - 13.75"
Calf
49.5 - 55.9 cm19.5" - 22"
Length to knee
45.7 cmUP TO 18"
3X-Large
Ankle
31.7 - 35 cm12.5" - 13.75"
Calf
54.6 - 61 cm21.5" - 24"
Length to knee
45.7 cmUP TO 18"
4X-Large
Ankle
33 - 36.2 cm13" - 14.25"
Calf
59.7 - 66 cm23.5" - 26"
Length to knee
45.7 cmUP TO 18"
5X-Large
Ankle
36.2 - 40.6 cm14.25"-16"
Calf
63.5 - 68.9 cm25"-27"
Length to knee
45.7 cmUP TO 18"
6X-Large
Ankle
38.1 - 43.2 cm15"-17"
Calf
66 - 71.1 cm26"-28"
Length to knee
45.7 cmUP TO 18"
7X-Large
Ankle
40.6 - 45.7 cm16"-18"
Calf
68.6 - 73.6 cm27"-29"
Length to knee
45.7 cmUP TO 18"
- 2X-Large and 3X-Large share the same ankle range and are differentiated by calf measurement.
Need help choosing your size?
Our Certified Fitters are standing by. Mon–Fri 8am–7pm CST
📞 1-800-504-7315
Between sizes? Size down for a firmer therapeutic fit, or up for easier donning. It should feel snug — like a firm, even hug.
Wrong size? No problem. Easy exchanges — we’ll get you into the right fit.
Measure first thing in the morning, before swelling, with a soft tape measure held level. Applies to: Knee High. Step-by-step Measuring Guide →
