Rock Climbing Physics Calculator
Tendon pulley strains, dynamic fall factors, anchor force vectors, and climbing difficulty grade conversions.
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Explore Additional Utilities
Oxygen partial pressure — altitude ↔ equivalent sea level O2 %
Determine effective oxygen percentage, barometric pressure, and oxygen partial pressure at high altitudes.
Duration Converter
Convert time intervals seamlessly between weeks, days, hours, minutes, and seconds.
Exposure Value (EV) & Lux Converter
Convert between EV and various shutter speed, aperture, and ISO combinations, with equivalent scene lux and EV100 references.
Coordinates to UTM/MGRS
Convert standard Latitude & Longitude decimal coordinates to UTM and military grid reference (MGRS) systems.
Weight Converter
Convert between kilogram, gram, pound, ounce, stone, and other mass units.
Weld throat thickness ↔ leg length — fillet weld geometry
Convert between throat thickness and leg length for fillet welds. Estimate joint volume, weld weight, and shear load capacity.
Battery capacity — Ah ↔ Wh ↔ days of autonomy
Convert between Amp-hours (Ah) and Watt-hours (Wh) and calculate battery bank backup days of autonomy based on loads.
pH adjustment — acid/alkali drops ↔ pH change estimate
Estimate acidifying or alkalizing solution amounts to safely adjust formulation pH values.
Angular Motor Rotation
Determine crankshaft engine RPM, radian ratios, and angular physical velocities.
Ocean depth ↔ pressure — bar per 10 meters rule
Calculate hydrostatic and total pressure in the ocean based on depth, water density, and gravity constants.
Stride length ↔ cadence ↔ running speed
Analyze running biomechanics: calculate speed based on cadence (SPM) and stride length.
Morse code ↔ NATO phonetic — dual encoding
Convert raw text into international Morse Code (DITs and DAHs) and official NATO spelling phonetics synchronously.
Refrigerant charge — system size ↔ kg of refrigerant
Estimate split system factory and added line set refrigerant charge adjustments using liquid tube diameters.
Fabric & Thread Density Calibrator
Analyze fabric weights, compare cotton single-ply thread counts, and calculate textile density.
Engine power ↔ hull speed — planing vs displacement
Estimate maximum displacement hull speeds (LWL formula) or calculate planing hull speeds using Crouch's classic marine formula.
Magnetic Declination
Estimate compass alignment values and offset angles between magnetic north and true north.
Halftone frequency — lpi ↔ dpi requirement
Calculate the necessary image resolution (DPI/PPI) for halftone printing line screens (LPI) and analyze grayscales.
Lactate threshold — heart rate % ↔ training zone
Convert heart rate threshold percentages into targeted cardiovascular athletic training zones.
Water hammer pressure — velocity ↔ pressure spike
Determine the maximum instantaneous water hammer pressure shockwave surge from sudden flow velocity shutdowns.
Base64 ↔ hex ↔ binary — encoding format converter
Convert raw text strings or bytes bidirectionally between Base64, Hexadecimal, Binary, and standard ASCII formats.