Mechanical Power Calibrator (W ↔ hp)
Convert physical engine horsepower ratings, mechanical draft forces, and electric wattages.
Explore Additional Utilities
Semitones & Pitch Intervals
Convert pitch ratios to semitones and cents, and calculate frequency intervals.
R-value ↔ U-value — insulation thermal resistance
Convert between R-value thermal resistance and U-value heat transmittance with preset materials lookup.
Flow velocity — pipe diameter + flow rate → m/s
Calculate average fluid flow velocity from pipe size or inner diameter and volumetric flow rate values.
Audio File Size & Sample Rate
Compute uncompressed audio files size based on sample rate, bit depth, and duration.
CMYK ↔ Pantone Matcher
Approximate CMYK values to the closest solid Pantone matching system (PMS) color swatch.
Thermal expansion coefficient — glaze fit calculation
Predict glaze-on-clay crazing or shivering by matching thermal expansion coefficients (COE).
Depth of Field (DoF) Calculator
Evaluate depth of field, near/far sharp limits, and circle of confusion based on sensor crop factor, focal length, aperture, and subject distance.
Tolerance converter (ISO fit classes ↔ clearance)
Find upper and lower deviation limits for shaft and hole ISO 286 fit classes like H7, g6, f7, and compute clearances in microns or mm.
Pace, Speed & Time Converter
Convert between different running paces and speeds (min/km, min/mile, km/h, mph) and predict race times.
Crease pattern scale — diagram size ↔ actual paper needed
Scale geometric origami crease patterns and tessellations to starting square sheet sizes.
Pediatric Dosing Calculator
Estimate pediatric dosages from adult recommendations using standard pediatric clinical rules: Clark's, Young's, Webster's, Fried's, and BSA methods.
Recycling Weight & Resource Savings Calculator
Convert quantities of recycled materials (plastic, glass, paper, aluminum) into greenhouse gases, water, and landfill space saved.
Wick size ↔ container diameter — burn pool coverage
Find recommended wick sizes based on container diameter, wax type, and burn pool coverage guidelines.
Blood Glucose Converter
Convert blood glucose levels between mmol/L and mg/dL, with diabetic range assessments and HbA1c approximations.
Grade converter — Yosemite ↔ French ↔ UIAA ↔ Australian
Convert climbing difficulty grades across Yosemite Decimal System (YDS), French, UIAA, Ewbank, and bouldering scales.
One Rep Max (1RM) Calculator
Estimate your single repetition maximum lifting capacity (1RM) using major clinical lifting models (Epley, Brzycki, Lander).
Screw gauge ↔ mm diameter — imperial vs metric screws
Cross-reference standard wood screw gauges with thread diameter in millimeters and inches for pre-drilling and pilot holes.
Slope & Contour Profiler
Calculate typographic slope gradients, percentage slopes, and angles from elevation contour differences.
Cosmic Distance Converter
Convert huge distances across Light Years, Parsecs, Astronomical Units, and Kilometers.
Honey yield — hive strength ↔ kg per season estimate
Estimate seasonal honey surplus production based on hive workforce size and local floral nectar flow conditions.