Scientific Expression Calculator
A formula calculator with variables and history for the arithmetic between the other tools.
Free, no login. Your inputs are saved in this browser. Values are engineering references — verify against manufacturer data and applicable codes before a final design.
Engineering Toolbox
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Everything in the toolbox
- Conveyor Belt Pull & Drive Calculator — Straight, Incline, L, Z, Radius & S
- UHMW Wearstrip Span Calculator — Deflection, Overhang & Creep
- MDR Motorized Drive Roller Selection Chart — Torque, Belt Pull, RPM
- Conveyor Speed & Throughput Calculator — FPM, Packages per Minute, Pitch
- Incline Conveyor Length & Angle Calculator — Straight, L and Z
- Conveyor Throughput Calculator — lb/hr to Packages per Minute and Belt Load
- Packaging Line Flow Simulator — Splits, Merges, Accumulation, Rejects
- Conveyor Motor & Gearbox Sizing Calculator — Torque, HP, Gear Ratio
- Modular Belt Drive Shaft Deflection & Twist Calculator — Square Shaft
- Accumulation Conveyor Length & Buffer Calculator
- Product Giveaway & Overfill Cost Calculator
- Packaging Line Downtime Cost Calculator — $/Minute, $/Shift
- Light Curtain Safety Distance Calculator (ISO 13855)
- Machine Guard Opening Distance Chart (ISO 13857) & PLr Reference
- M12, M8, RJ45 & DB9 Connector Pinouts — Ethernet/IP, PROFINET, IO-Link
- Pneumatic Cylinder Force Calculator — Bore, Rod, PSI & Bar
- ISO 286 Hole & Shaft Fit Tolerance Calculator — H7, g6, k7, p6
- AWG Wire Gauge & Ampacity Chart — THHN, XHHW, Voltage Drop
- Bolt, Tap Drill & Clearance Hole Chart — Metric & Imperial
- Sheet Metal Gauge to Thickness Chart — Steel, Stainless, Aluminum
- Coefficient of Friction Table — Steel, UHMW, Rubber, Plastics
- NPT, BSPP & BSPT Pipe Thread Reference — Air Fittings
- Area Calculator — Rectangles, Circles, Trapezoids
- Panel Load & kW-to-Amps Calculator — Single & Three Phase