Blood Glucose & HbA1c Converter
Convert blood glucose between mmol/L and mg/dL, evaluate clinical ranges, and approximate HbA1c values.
Impaired Fasting Glucose (Prediabetes)
Elevated glucose levels. Lifestyle interventions can prevent progression to type 2 diabetes.
Normal (Under 5.7%)
Good long-term blood sugar control.
Standard Conversion Equations:
• mg/dL = mmol/L × 18.0182
• eAG (mg/dL) = (28.7 × HbA1c) − 46.7
Explore Additional Utilities
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Hot water demand — occupants ↔ liters per hour needed
Estimate peak hot water demand in liters per hour and size standard water heater tanks or tankless flow rates.
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.
US Inflation Adjuster
Evaluate historical purchasing power changes in the United States using official CPI records.
Frequency ↔ wavelength — antenna length calculation
Determine electromagnetic wavelength from frequency and velocity factors. Get recommended quarter-wave and half-wave antenna lengths.
Likert scale ↔ numerical score
Convert Likert scale responses (e.g., 3-point, 5-point, 7-point, 10-point) into standardized numerical indices for survey research analytics.
Mechanical Power (W ↔ hp)
Convert physical engine horsepower ratings, mechanical draft forces, and electric wattages.
True wind ↔ apparent wind
Calculate apparent wind speed and angle from true wind speed, sailing angle, and boat speed (or vice versa).
Freeness — CSF ↔ SR — pulp drainage rate
Convert between Canadian Standard Freeness and Schopper-Riegler drainage scales. Identify target paper grades.
Dye concentration — leather area ↔ product needed
Estimate leather dye volume needed based on total surface area, coat layers, and color reduction ratios.
Batting average ↔ on base percentage — baseball stats
Convert batting average, walks, and plate appearances into On-Base Percentage (OBP).
Luminous Efficacy Calculator
Calculate and compare the luminous efficacy (lumens per watt) of various lighting technologies, with detailed efficiency and rating analysis.
Facet angle ↔ critical angle — refractive index based
Calculate gemstone critical angles and recommended pavilion/crown alignments to maximize light reflection.
Chlorophyll concentration ↔ water color index
Convert Chlorophyll-a bio-concentrations (mg/m³) to ocean water color classes, Forel-Ule index, and trophic status.
Blowpipe rotation speed ↔ gravity sag correction
Determine optimal rotation speed (RPM) to keep glass centered and correct gravity sag based on viscosity states.
Rock density ↔ tonnage — volume to weight for blasting
Determine solid rock and broken loose rock tonnage from volume based on rock type densities, useful for blasting and haulage design.
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.
Annealing temperature — glass type ↔ strain point ↔ anneal point
Calculate strain point, anneal point, and custom cooling schedules based on glass type and thickness to prevent stress fractures.
Saponification value — oil type ↔ lye required per gram
Look up sap values for standard oils and calculate custom lye weights.
Coverage rate — chemical amount ↔ area treated
Determine total chemical volume or weight required based on the target area, sprayer output flow, and speed.