PileCalc
All comparisons
PileCalc vs LPILE

Everything LPILE computes — in your browser, for a fraction of the price.

PileCalc runs the same public-domain FHWA COM624P p-y method, validated to within a few percent of LPILE itself — no Windows, no dongle, $39.99/month instead of a ~$1,200 perpetual license.

LPILE is the benchmark the whole market trusts, and for specialized lateral work it remains the safe choice. PileCalc runs the same public-domain method — validated against LPILE itself — in the browser, with a modern UI and far broader scope.

Platform
Windows desktop (USB dongle / network license)
Pricing
≈ $1,200 perpetual + annual maintenance
Scope
Lateral (p-y) only

What LPILE does well

  • Four decades of field calibration and an enormous installed base
  • The de-facto reference implementation of the p-y method
  • Deep load-case management, pushover and plastic-hinge modeling

Where PileCalc is different

  • Runs in any browser — no Windows, no dongle, no license server
  • Same COM624P method, validated to within a few percent of LPILE
  • Pushover load sweeps, nonlinear (cracked-section) EI, pile-head stiffness springs and buckling — LPILE's advanced lateral features, included
  • Every input explained inline; curves and full response always visible
  • Also covers axial, downdrag, torsion, helical piles, rigid-cap groups, drilled shafts and footings — LPILE is lateral-only (groups are Ensoft's separate GROUP license)
  • REST API and Excel WEBSERVICE integration on every tool

The numbers, published

PileCalc's engine is checked term-by-term against the reference codes. A representative sample of the benchmarks — every intermediate value is visible in the app so you can reproduce them yourself.

Free-head pile (EI 1.43×10⁶, D 1 m, L 24.4 m)Liang et al. (2014) exact solution / RSPile
Max moment
792.2 kN·m
792.1 kN·m (exact)
within 0.1%
Fixed-head pile (EI 1.43×10⁶, D 1 m, L 24.4 m)Liang et al. (2014) exact solution / RSPile
Head moment
−581.1 kN·m
−581.0 kN·m (exact)
within 0.1%
Cantilever pile (EI 320, D 0.1 m, L 5.25 m)Liang et al. (2014) exact solution / RSPile
Head deflection
8.75 mm
8.750 mm (exact)
within 0.1%
Cantilever pile (EI 320, D 0.1 m, L 5.25 m)Liang et al. (2014) exact solution / RSPile
Max moment
2.335 kN·m
2.334 kN·m (exact)
within 0.1%
Circular pile, API sand (D 0.5 m, L 10 m, H 100 kN)RSPile verification manual
Deflection & moment profile
RSPile 2018 problems #1/#2/#8/#15
chart-reading tolerance
within 1–3%
Steel pile, multi-layer slope stabilization (17 m)RSPile / TZPile / LPile
Lateral resistance
607 kN
582 kN
within ~4%
Read how we validate — and why against two independent codes

PileCalc vs LPILE: common questions

Switching from LPILE? See the LPILE alternative guideRead the full write-up

Run the comparison yourself

Open the same pile in PileCalc and see the result in your browser in under a minute.

Launch the app