Calculators

Beam analysis that can continue into a 2D model

Scientific calculation with RPN and programmable functions

A focused math solver with examples and reference links

A notepad calculator with variables and calendar expressions

Algebra and calculus through dedicated solvers

Nutrient and water calculations for planted aquariums

Optimization modelling languages connected to Excel data

Speaker enclosure and crossover calculation tools

Programmable scientific arithmetic with saved formulas

Structural calculations with visible formulas and references

Focused browser calculators for statistical questions

Engineering worksheets that mix formulas and explanation

Construction and everyday calculations with searchable tasks

Calculations in algebraic geometry and commutative algebra

Standard, scientific, programmer and date calculations

A handheld-style scientific calculator for Android

Panel cutting layouts and cabinetry cost calculations

Recipe calculations connected to a brewing batch

Laboratory calculations beside molecular-biology utilities

Cloud-service cost estimates with inspectable assumptions

High-precision numerical expressions with custom functions

Household carbon arithmetic with visible assumptions

A keypad calculator with clear, memory and percentage controls

Interactive beam, frame and truss analysis