This 45-45-90 triangle reference table shows the hypotenuse for a range of leg length values. Every figure is computed with the same engine that powers our 45-45-90 Triangle Calculator, so the numbers are exact.
| Leg length | Hypotenuse | Area |
|---|---|---|
| 1.3 | 1.8385 | 0.8450 |
| 2.5 | 3.5355 | 3.1250 |
| 3.8 | 5.3740 | 7.2200 |
| 5 | 7.0711 | 12.5000 |
| 7.5 | 10.6066 | 28.1250 |
| 10 | 14.1421 | 50.0000 |
| 15 | 21.2132 | 112.5000 |
| 25 | 35.3553 | 312.5000 |
| 35 | 49.4975 | 612.5000 |
| 50 | 70.7107 | 1,250.0000 |
How to use this table
Find the row closest to your leg length and read across to the hypotenuse. For a value between two rows, the real figure sits between them — or enter your exact numbers in the 45-45-90 Triangle Calculator for a precise answer.
Need a value that is not in the table? — the 45-45-90 Triangle Calculator does it instantly, for free, with the formula and a worked example built in.
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