Roof Pitch Calculator
Convert between roof pitch ratios, degrees, and percentages, and calculate rafter lengths.
Slope Parameters
Pitch 2:12 to 4:12. Lower limit for standard asphalt shingles.
Graphical Pitch Representation
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Saddle fit — tree width ↔ horse back angle & measurement
Determine tree width (Narrow, Medium, Wide, Extra Wide) from wither angle measurements and back curvature.
Scientific Temperature Scale
Convert scientific scales between Celsius, Fahrenheit, Kelvin, and Rankine thermal indicators.
Canopy cover percentage ↔ light transmission
Convert forest canopy coverage percentages to photosynthetically active light transmittance and estimate Leaf Area Index (LAI).
Safety glass thickness ↔ impact resistance rating
Calculate safety glass thickness requirements and impact resistance (Tempered vs. Laminated).
Drilling rate — ROP in m/hr ↔ ft/hr
Translate Rate of Penetration (ROP) and calculate specific drilling time, drilling speed efficiency, and shift performance.
Animal Feed & Dry Matter Calculator
Convert animal body weight percentage dry matter intake (DMI) to daily feed requirements in kg/lbs, based on feed dry matter ratio and species presets.
Scale factor (model size ↔ real world)
Convert dimensions between model design sizes and physical real-world scale targets, including imperial/metric conversions.
Salinity — PSU ↔ g/kg ↔ % — seawater concentration
Convert between Practical Salinity Units (PSU), salinity concentration in g/kg (ppt ‰), and percentage (%).
Paper size ↔ finished model size — origami scaling
Determine required starting paper square dimensions to fold specific final 3D origami model sizes.
Shrink Wrap Roll Coverage
Determine how many pallets can be wrapped with a single shrink wrap roll based on roll dimensions, gauge, and layers.
Inverter sizing — load watts ↔ VA rating needed
Analyze total AC continuous and surge loads to specify the ideal inverter Volt-Amp (VA) and wattage ratings.
Dovetail angle — ratio ↔ degrees for hardwood vs softwood
Convert dovetail joint slope ratios (e.g. 1:6, 1:8) to slope angles in degrees and verify hardwood/softwood suitability.
Solar Panel Output & Yield Calculator
Calculate daily and annual electricity generation (kWh) based on solar panel capacity (kWp), peak sun hours, and system efficiency losses.
Clothing Size Converter
Convert apparel sizes (XS to 3XL) across US, UK, European, and Asian standards.
Heat flux — watts per square meter ↔ BTU/hr·ft²
Convert heat transfer rates per unit area between W/m², kW/m², BTU/hr·ft², and cal/s·cm².
Water discount — full water ↔ reduced water ratio
Optimize water discount levels and water-to-lye concentration ratios to speed up soap curing.
Water resistance — ATM ↔ bar ↔ meters depth rating
Convert water pressure tolerances across ATM, Bar, and depth meters. Understand safe real-world water sport activities.
Tablet Splitting & Cost Calculator
Calculate tablet splitting doses, available whole/half combinations, cost savings, and review critical pill splitting safety guidelines.
Net metering — units exported ↔ bill credit estimate
Estimate utility bill credits, net energy offsets, and financial yields under 1:1 net metering or dual-rate net billing programs.
GPS Format Converter
Convert global latitude and longitude between Decimal Degrees (DD) and Degrees Minutes Seconds (DMS).