SpiBench

One bench for every engineering calculation

Converters, torque, and unit-aware math — one traceable workspace.

Unit ConverterTorque CalculatorUnit CalculatorBearing Life CalculatorISO 286 Fit CalculatorScientific CalculatorUnit ConverterTorque CalculatorUnit CalculatorBearing Life CalculatorISO 286 Fit CalculatorScientific Calculator
Launch workspace
±1e-9
Numerical resolution
0+
unit domains · zero rounding

Built like an instrument, not a spreadsheet

Units are first-class values. Results carry their dimensionality, and every figure traces back to its source.

  • Unit-aware math

    Expressions refuse to silently drop dimensions.

  • Traceable results

    Each output links to the formula and inputs that produced it.

  • Verified constants

    Physical constants with documented provenance.

  • Keyboard-first

    Command palette, history, and exports.

torque.spi — result trace
▸ inputs
  force        = 185 N
  lever arm   = 0.42 m
  axis        = z

▸ derived
  torque       = force × lever arm
               = 185 N × 0.42 m
               = 77.7 N·m

▸ converted
  77.7 N·m  →  57.31 lbf·ft
  77.7 N·m  →  77700 N·mm
View unit reference

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Thermal & HeatHeat transfer, conductivity and temperature scaling across resistance networks.
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Pressure & StressStress, strain and pressure conversions with safety-factor overlay.
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Fluid FlowVolumetric and mass flow rates, Reynolds number, pipe sizing.
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CAD ConverterConvert STEP and IGES files to STL directly in your browser.
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SpiBench

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