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Residential HVAC load, selection and duct calculations

Online cutting plans with printable reports

Bicycle gearing comparisons with cadence and tyre information

Personal emissions estimates with quick and detailed inputs

Scientific expressions with dimensions checked as types

Android scientific calculation with symbolic and graphical tools

Calculations in algebraic geometry and commutative algebra

Hydraulics and environmental-engineering calculations

Molecular-biology quantities with visible formulas

Solar-system ephemeris calculations with documented time spans

Instrument-specific observing calculations

Depth-of-field and hyperfocal calculations

Cloud-service cost estimates with inspectable assumptions

Generate PDF and Word documents from office-editor templates

Generate documents from Office templates and multiple data sources

Food comparisons, recipe nutrition and a connected diary

Computational algebra and number-theory software

High-precision numerical expressions with custom functions

Nutrient and water calculations for planted aquariums

Pressure-loss calculations with pipe and fitting data

Topic-based calculators for practical questions

Formula calculators with selectable input units

Mathematics and practical calculators by subject

Construction and everyday calculations with searchable tasks