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.
Do not base your size on your shoe size. Medical compression garments require precise ankle and calf measurements to work correctly. Please use your exact measurements on the chart below to find your perfect fit.
👆 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 →
