Free structural and concrete calculators for beams, columns, foundations, base plates, and post-tensioned concrete. Built by a licensed P.E. — accurate, code-compliant, and ready for real design work.
Base Plate & Anchor Bolt Calculator
AISC Design Guide 1 and ACI 318-19 Chapter 17. Full anchor bolt analysis including concrete breakout, pullout, and side-face blowout.
PT Tendon Elongation & Losses Calculator
ACI 318-19 compliant. Calculates expected elongation, friction losses, anchor set losses, and elastic shortening for post-tensioned tendons.
Beam Calculator
Shear force, bending moment, and deflection diagrams for simply supported and cantilever beams with point loads, distributed loads, and moments.
Column Buckling Calculator
Euler and inelastic buckling analysis for steel and aluminum columns. Accounts for end conditions, slenderness ratio, and material yielding.
Concrete Foundation Calculator
Designs spread footings for allowable bearing pressure, one-way shear, two-way shear, and flexural reinforcement per ACI 318.
Punching Shear & Stud Rail Designer
ACI 318-19 punching shear check with automatic stud rail design. Handles rectangular columns, edge conditions, and unbalanced moment transfer.
RC Column Interaction Diagram
Generates P-M interaction diagrams for reinforced concrete columns per ACI 318-19. Supports rectangular and circular sections.
Wood Beam Designer (NDS 2024)
Design wood beams, joists, rafters, and headers per NDS 2024. Checks bending, shear, bearing, and deflection with full adjustment factor transparency.
Development Length & Lap Splice Calculator
ACI 318-19 development length for tension, compression, and hooked bars. Includes Class A/B lap splice lengths and modification factors.
PT Tendon Calculator
Calculate post-tensioning tendon elongation, jacking force, and strand stress for unbonded and bonded tendons per ACI 318.
Section Properties Calculator
Calculate area, moment of inertia, section modulus, radius of gyration, and plastic modulus for standard steel shapes (W, HSS, C, L, pipe).
Elastomeric Bearing Pad Calculator
AASHTO LRFD elastomeric bearing pad design. Check compressive stress, shear strain, rotation, stability, and slip for plain and steel-reinforced pads.
Why Use These Structural & Concrete Calculators?
Every calculator on this page is built by a licensed Professional Engineer and follows current U.S. building codes — primarily ACI 318-19 and AISC 360/Design Guides. They produce results you can use in real submittals.
Whether you’re sizing a base plate, checking punching shear at a slab-column joint, or verifying PT elongation in the field, these tools give you fast, reliable answers with full transparency into the calculations.
Code References
- ACI 318-19 — Building Code Requirements for Structural Concrete
- AISC 360-22 — Specification for Structural Steel Buildings
- AISC Design Guide 1 — Base Plate and Anchor Rod Design
- NDS 2024 — National Design Specification for Wood Construction
- ACI 421.1R-20 — Shear Reinforcement for Slabs
Need More Power?
*ficient design Professional adds saved projects, branded PDF reports, code reference popups, and batch processing for engineering teams.
Browse All AISC Shapes
871 shapes with complete section properties. Click any shape for full details.
Wide Flange (W) — 258 shapes
W10x112
W10x12
W10x15
W10x19
W10x22
W10x26
W10x30
W10x33
W10x39
W10x45
W10x49
W10x54
W10x60
W10x68
W10x77
W10x88
W12x106
W12x120
W12x136
W12x14
W12x152
W12x16
W12x170
W12x19
W12x190
W12x210
W12x22
W12x230
W12x252
W12x26
W12x279
W12x30
W12x305
W12x336
W12x35
W12x40
W12x45
W12x50
W12x53
W12x58
W12x65
W12x72
W12x79
W12x87
W12x96
W14x109
W14x120
W14x132
W14x145
W14x159
W14x176
W14x193
W14x211
W14x22
W14x233
W14x257
W14x26
W14x283
W14x30
W14x311
W14x34
W14x342
W14x370
W14x38
W14x398
W14x426
W14x43
W14x455
W14x48
W14x500
W14x53
W14x550
W14x605
W14x61
W14x665
W14x68
W14x730
W14x74
W14x82
W14x90
W14x99
W16x100
W16x26
W16x31
W16x36
W16x40
W16x45
W16x50
W16x57
W16x67
W16x77
W16x89
W18x106
W18x119
W18x130
W18x143
W18x158
W18x175
W18x192
W18x211
W18x234
W18x258
W18x283
W18x311
W18x35
W18x40
W18x46
W18x50
W18x55
W18x60
W18x65
W18x71
W18x76
W18x86
W18x97
W21x101
W21x111
W21x122
W21x132
W21x147
W21x166
W21x182
W21x201
W21x44
W21x50
W21x57
W21x62
W21x68
W21x73
W21x83
W21x93
W24x104
W24x117
W24x131
W24x146
W24x162
W24x176
W24x192
W24x207
W24x229
W24x250
W24x279
W24x306
W24x335
W24x370
W24x55
W24x62
W24x68
W24x76
W24x84
W24x94
W27x102
W27x114
W27x129
W27x146
W27x161
W27x178
W27x194
W27x217
W27x235
W27x258
W27x281
W27x307
W27x336
W27x368
W27x84
W27x94
W30x108
W30x116
W30x124
W30x132
W30x148
W30x173
W30x191
W30x211
W30x235
W30x261
W30x292
W30x326
W30x357
W30x391
W30x90
W30x99
W33x118
W33x130
W33x141
W33x152
W33x169
W33x201
W33x221
W33x241
W33x263
W33x291
W33x318
W33x354
W33x387
W36x135
W36x150
W36x160
W36x170
W36x182
W36x194
W36x210
W36x232
W36x256
W36x282
W36x302
W36x330
W36x361
W36x395
W36x441
W36x487
W36x529
W36x570
W36x652
W36x723
W36x802
W36x853
W40x149
W40x167
W40x183
W40x199
W40x211
W40x235
W40x264
W40x278
W40x294
W40x327
W40x362
W40x397
W40x431
W40x503
W40x593
W44x230
W44x262
W44x290
W44x335
W4x13
W6x12
W6x15
W6x16
W6x20
W6x25
W6x9
W8x10
W8x13
W8x15
W8x18
W8x21
W8x24
W8x28
W8x31
W8x35
W8x40
W8x48
W8x58
W8x67
American Standard (S) — 28 shapes
Channel (C) — 29 shapes
Misc Channel (MC) — 31 shapes
Angle (L) — 94 shapes
L2-1/2×2-1/2×1/4
L2-1/2×2-1/2×3/16
L2-1/2×2-1/2×3/8
L2-1/2×2-1/2×5/16
L2x2x1/4
L2x2x1/8
L2x2x3/16
L2x2x3/8
L2x2x5/16
L3-1/2×2-1/2×1/2
L3-1/2×2-1/2×1/4
L3-1/2×2-1/2×3/8
L3-1/2×2-1/2×5/16
L3-1/2×3-1/2×1/2
L3-1/2×3-1/2×1/4
L3-1/2×3-1/2×3/8
L3-1/2×3-1/2×5/16
L3x2x1/2
L3x2x1/4
L3x2x3/16
L3x2x3/8
L3x2x5/16
L3x3x1/2
L3x3x1/4
L3x3x3/16
L3x3x3/8
L3x3x5/16
L4x3-1/2×1/2
L4x3-1/2×1/4
L4x3-1/2×3/8
L4x3-1/2×5/16
L4x3x1/2
L4x3x1/4
L4x3x3/8
L4x3x5/16
L4x3x5/8
L4x4x1/2
L4x4x1/4
L4x4x3/4
L4x4x3/8
L4x4x5/16
L4x4x5/8
L5x3-1/2×1/2
L5x3-1/2×1/4
L5x3-1/2×3/4
L5x3-1/2×3/8
L5x3x1/2
L5x3x1/4
L5x3x3/4
L5x3x3/8
L5x3x5/16
L5x3x5/8
L5x5x1/2
L5x5x3/4
L5x5x3/8
L5x5x5/16
L5x5x5/8
L5x5x7/8
L6x3-1/2×1/2
L6x3-1/2×3/8
L6x3-1/2×5/16
L6x4x1/2
L6x4x3/4
L6x4x3/8
L6x4x5/16
L6x4x5/8
L6x4x7/8
L6x6x1
L6x6x1/2
L6x6x3/4
L6x6x3/8
L6x6x5/8
L6x6x7/8
L7x4x1/2
L7x4x3/4
L7x4x3/8
L7x4x5/8
L8x4x1
L8x4x1/2
L8x4x3/4
L8x4x5/8
L8x4x7/8
L8x6x1
L8x6x1/2
L8x6x3/4
L8x6x5/8
L8x6x7/8
L8x8x1
L8x8x1-1/8
L8x8x1/2
L8x8x3/4
L8x8x5/8
L8x8x7/8
Structural Tee (WT) — 123 shapes
WT10.5×25
WT10.5×28.5
WT10.5×31
WT10.5×34
WT10.5×36.5
WT10.5×41.5
WT12x27.5
WT12x31
WT12x34
WT12x38
WT12x42
WT12x47
WT12x52
WT12x58.5
WT12x65.5
WT13.5×42
WT13.5×47
WT13.5×51
WT13.5×57
WT15x45
WT15x49.5
WT15x54
WT15x58
WT15x62
WT15x66
WT16.5×65.5
WT16.5×70.5
WT16.5×76
WT18x105
WT18x115
WT18x128
WT18x140
WT18x150
WT18x167.5
WT18x67.5
WT18x75
WT18x80
WT18x85
WT18x97
WT20x107.5
WT20x117.5
WT20x132
WT20x148.5
WT20x162
WT20x181
WT20x196
WT20x74.5
WT20x83.5
WT20x91.5
WT22x115
WT22x131
WT22x145
WT22x167.5
WT5x11
WT5x13
WT5x15
WT5x16.5
WT5x19.5
WT5x22.5
WT5x24.5
WT5x27
WT5x30
WT5x34
WT5x44
WT5x56
WT5x6
WT5x7.5
WT5x8.5
WT5x9.5
WT6x11
WT6x13
WT6x15
WT6x17.5
WT6x20
WT6x22.5
WT6x25
WT6x26.5
WT6x29
WT6x32.5
WT6x36
WT6x39.5
WT6x43.5
WT6x48
WT6x53
WT6x60
WT6x7
WT6x8
WT6x9.5
WT7x11
WT7x13
WT7x15
WT7x17
WT7x19
WT7x21.5
WT7x24
WT7x26.5
WT7x30.5
WT7x34
WT7x37
WT7x41
WT7x45
WT7x54.5
WT7x60
WT8x13
WT8x15.5
WT8x18
WT8x20
WT8x22.5
WT8x25
WT8x28.5
WT8x33.5
WT8x38.5
WT8x44.5
WT8x50
WT9x17.5
WT9x20
WT9x25
WT9x30
WT9x35.5
WT9x43
WT9x48.5
WT9x53
Rectangular HSS — 196 shapes
HSS10x10x1/4
HSS10x10x3/8
HSS10x10x5/8
HSS10x2x3/8
HSS10x3x3/8
HSS10x4x1/2
HSS10x4x1/4
HSS10x4x3/8
HSS10x4x5/8
HSS10x5x1/2
HSS10x5x3/8
HSS10x6x1/2
HSS10x6x1/4
HSS10x6x3/8
HSS10x6x5/8
HSS10x8x1/2
HSS10x8x3/8
HSS10x8x5/8
HSS12x10x1/2
HSS12x10x3/8
HSS12x12x1/2
HSS12x12x1/4
HSS12x12x3/8
HSS12x12x5/16
HSS12x12x5/8
HSS12x4x1/2
HSS12x4x1/4
HSS12x4x3/8
HSS12x4x5/8
HSS12x6x1/2
HSS12x6x1/4
HSS12x6x3/8
HSS12x6x5/8
HSS12x8x1/2
HSS12x8x1/4
HSS12x8x3/8
HSS12x8x5/8
HSS14x10x1/2
HSS14x10x1/4
HSS14x10x3/8
HSS14x10x5/8
HSS14x14x1/2
HSS14x14x3/8
HSS14x14x5/8
HSS14x4x1/2
HSS14x4x3/8
HSS14x6x1/2
HSS14x6x1/4
HSS14x6x3/8
HSS14x6x5/8
HSS14x8x1/2
HSS14x8x3/8
HSS16x12x1/2
HSS16x12x3/8
HSS16x12x5/8
HSS16x16x1/2
HSS16x16x3/8
HSS16x16x5/8
HSS16x4x1/2
HSS16x4x3/8
HSS16x6x1/2
HSS16x6x3/8
HSS16x8x1/2
HSS16x8x3/8
HSS16x8x5/8
HSS18x6x1/2
HSS18x6x3/8
HSS18x6x5/8
HSS2-1/2×1-1/2×1/8
HSS2-1/2×1-1/2×3/16
HSS2-1/2×2-1/2×1/4
HSS2-1/2×2-1/2×1/8
HSS2-1/2×2-1/2×3/16
HSS2-1/2x2x1/8
HSS2-1/2x2x3/16
HSS20x12x1/2
HSS20x12x3/8
HSS20x12x5/8
HSS20x16x1/2
HSS20x16x3/8
HSS20x20x1/2
HSS20x20x3/8
HSS20x20x5/8
HSS20x4x1/2
HSS20x4x3/8
HSS20x8x1/2
HSS20x8x3/8
HSS20x8x5/8
HSS2x1-1/2×1/8
HSS2x1-1/2×3/16
HSS2x1x1/8
HSS2x1x3/16
HSS2x2x1/4
HSS2x2x1/8
HSS2x2x3/16
HSS3-1/2×2-1/2×1/4
HSS3-1/2×2-1/2×3/16
HSS3-1/2×3-1/2×1/4
HSS3-1/2×3-1/2×3/16
HSS3-1/2×3-1/2×3/8
HSS3-1/2×3-1/2×5/16
HSS3x1-1/2×1/8
HSS3x2-1/2×3/16
HSS3x2x1/4
HSS3x2x1/8
HSS3x2x3/16
HSS3x3x1/4
HSS3x3x3/16
HSS3x3x3/8
HSS3x3x5/16
HSS4x2-1/2×3/16
HSS4x2x1/4
HSS4x2x1/8
HSS4x2x3/16
HSS4x2x3/8
HSS4x2x5/16
HSS4x3x1/4
HSS4x3x3/16
HSS4x3x3/8
HSS4x3x5/16
HSS4x4x1/2
HSS4x4x1/4
HSS4x4x3/16
HSS4x4x3/8
HSS4x4x5/16
HSS5x2-1/2×1/4
HSS5x2x1/4
HSS5x2x3/16
HSS5x2x3/8
HSS5x3x1/2
HSS5x3x1/4
HSS5x3x3/16
HSS5x3x3/8
HSS5x4x1/2
HSS5x4x1/4
HSS5x4x3/16
HSS5x4x3/8
HSS5x5x1/2
HSS5x5x1/4
HSS5x5x3/16
HSS5x5x3/8
HSS5x5x5/16
HSS6x2x1/4
HSS6x2x3/16
HSS6x2x3/8
HSS6x3x1/2
HSS6x3x1/4
HSS6x3x3/16
HSS6x3x3/8
HSS6x4x1/2
HSS6x4x1/4
HSS6x4x3/16
HSS6x4x3/8
HSS6x4x5/16
HSS6x5x3/8
HSS6x6x1/2
HSS6x6x1/4
HSS6x6x3/16
HSS6x6x3/8
HSS6x6x5/16
HSS6x6x5/8
HSS7x3x1/4
HSS7x3x3/8
HSS7x4x1/4
HSS7x4x3/8
HSS7x5x1/2
HSS7x5x1/4
HSS7x5x3/16
HSS7x5x3/8
HSS7x7x1/2
HSS7x7x3/8
HSS7x7x5/8
HSS8x2x1/4
HSS8x2x3/8
HSS8x3x1/4
HSS8x3x3/8
HSS8x4x1/2
HSS8x4x1/4
HSS8x4x3/8
HSS8x4x5/16
HSS8x4x5/8
HSS8x6x1/2
HSS8x6x1/4
HSS8x6x3/8
HSS8x6x5/8
HSS8x8x1/2
HSS8x8x1/4
HSS8x8x3/8
HSS8x8x5/16
HSS8x8x5/8
HSS9x5x1/2
HSS9x5x3/8
HSS9x7x1/2
HSS9x7x3/8
HSS9x9x3/8
Round HSS — 68 shapes
HSS10.000×0.375
HSS10.000×0.500
HSS10.750×0.250
HSS10.750×0.375
HSS10.750×0.500
HSS12.750×0.250
HSS12.750×0.375
HSS12.750×0.500
HSS14.000×0.313
HSS14.000×0.375
HSS14.000×0.500
HSS16.000×0.313
HSS16.000×0.375
HSS16.000×0.500
HSS18.000×0.375
HSS18.000×0.500
HSS2.375×0.154
HSS2.375×0.250
HSS2.500×0.250
HSS20.000×0.375
HSS20.000×0.500
HSS3.000×0.188
HSS3.000×0.250
HSS3.000×0.313
HSS3.500×0.188
HSS3.500×0.250
HSS3.500×0.313
HSS4.000×0.188
HSS4.000×0.237
HSS4.000×0.250
HSS4.000×0.313
HSS4.000×0.375
HSS4.000×0.500
HSS4.500×0.188
HSS4.500×0.250
HSS4.500×0.337
HSS4.500×0.500
HSS5.000×0.250
HSS5.000×0.313
HSS5.000×0.375
HSS5.000×0.500
HSS5.563×0.134
HSS5.563×0.188
HSS5.563×0.258
HSS5.563×0.375
HSS5.563×0.500
HSS6.000×0.188
HSS6.000×0.250
HSS6.000×0.313
HSS6.000×0.375
HSS6.000×0.500
HSS6.625×0.188
HSS6.625×0.250
HSS6.625×0.313
HSS6.625×0.375
HSS6.625×0.500
HSS7.000×0.250
HSS7.000×0.375
HSS7.000×0.500
HSS7.500×0.250
HSS7.500×0.375
HSS7.500×0.500
HSS8.625×0.188
HSS8.625×0.250
HSS8.625×0.313
HSS8.625×0.375
HSS8.625×0.500
Pipe — 44 shapes
Pipe1-1/2XS
Pipe1-1/2XXS
Pipe1-1/4Std
Pipe1-1/4XS
Pipe1-1/4XXS
Pipe1/2Std
Pipe1/2XS
Pipe1/2XXS
Pipe10Std
Pipe10XS
Pipe10XXS
Pipe12Std
Pipe12XS
Pipe12XXS
Pipe1Std
Pipe1XS
Pipe1XXS
Pipe2-1/2Std
Pipe2-1/2XS
Pipe2-1/2XXS
Pipe2Std
Pipe2XS
Pipe2XXS
Pipe3-1/2Std
Pipe3-1/2XS
Pipe3/4Std
Pipe3/4XS
Pipe3/4XXS
Pipe3Std
Pipe3XS
Pipe3XXS
Pipe4Std
Pipe4XS
Pipe4XXS
Pipe5Std
Pipe5XS
Pipe5XXS
Pipe6Std
Pipe6XS
Pipe6XXS
Pipe8Std
Pipe8XS
Pipe8XXS
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