Area Unit Converter Area Unit Converter Convert between m², cm², mm², km², in², ft², yd², mi², hectare (ha), and acre. Base: m². Value From square meter (m²)square centimeter (cm²)square millimeter (mm²)square kilometer (km²)square inch (in²)square foot (ft²)square yard (yd²)square mile (mi²)hectare (ha)acre To square meter (m²)square centimeter (cm²)square millimeter (mm²)square kilometer (km²)square inch (in²)square foot […]
Angular Velocity Unit Converter Angular Velocity Unit Converter Convert between rad/s, deg/s, rev/s, Hz, rpm, rad/min, deg/min, mrad/s, and µrad/s. Base: rad/s. Value From radian per second (rad/s)degree per second (deg/s)revolution per second (rev/s)hertz (Hz = 1/s)revolutions per minute (rpm)radian per minute (rad/min)degree per minute (deg/min)milliradian per second (mrad/s)microradian per second (µrad/s) To radian per […]
Angular Momentum Unit Converter Angular Momentum Unit Converter Convert between kg·m²/s, N·m·s, J·s, g·cm²/s, lbm·ft²/s, ozm·in²/s, slug·ft²/s. Base: kg·m²/s. Value From kg·m²/s (SI)N·m·sJ·sg·cm²/slbm·ft²/sozm·in²/sslug·ft²/s To kg·m²/s (SI)N·m·sJ·sg·cm²/slbm·ft²/sozm·in²/sslug·ft²/s Decimals Convert Reset Converted Value Unit Symbol Value Notes: N·m·s = J·s = kg·m²/s. 1 kg·m²/s = 10⁷ g·cm²/s. 1 lbm = 0.45359237 kg, 1 ozm = 0.028349523125 kg, […]
Angular Acceleration Unit Converter Angular Acceleration Unit Converter Convert between rad/s², deg/s², grad/s², rev/s², rpm/s, rpm/min, mrad/s², and µrad/s². Base: rad/s². Value From radian per second² (rad/s²)degree per second² (deg/s²)grad per second² (grad/s²)revolution per second² (rev/s²)rpm per second (rpm/s)rpm per minute (rpm/min)milliradian per second² (mrad/s²)microradian per second² (µrad/s²) To radian per second² (rad/s²)degree per second² […]
Angle Unit Converter Angle Unit Converter Convert between rad, degree (°), grad/gon, turn/rev, arcminute (′), arcsecond (″), mrad, and µrad. Base: radian. Value From radian (rad)degree (°)grad / gon (grad)turn / revolution (rev)arcminute (′)arcsecond (″)milliradian (mrad)microradian (µrad) To radian (rad)degree (°)grad / gon (grad)turn / revolution (rev)arcminute (′)arcsecond (″)milliradian (mrad)microradian (µrad) Decimals Convert Reset Converted […]
Air Changes per Hour (ACH) Converter Air Changes per Hour (ACH) Converter Convert ACH (1/h), 1/min, 1/s. With room volume, also convert to flow (m³/s, m³/h, L/s, CFM) and back. Value From ACH (1/h)1/min1/s m³/sm³/hL/sCFM To ACH (1/h)1/min1/s m³/sm³/hL/sCFM Decimals Room Volume (optional) m³ft³ Needed when converting between rate and flow. Convert Reset Converted Value […]
Activity Unit Converter (Bq, Ci, dps, dpm) Activity Unit Converter Convert between Bq, kBq, MBq, GBq, TBq, dps, dpm, Ci, mCi, µCi, nCi, pCi. Base: Bq. Value From becquerel (Bq)kilobecquerel (kBq)megabecquerel (MBq)gigabecquerel (GBq)terabecquerel (TBq)disintegrations per second (dps)disintegrations per minute (dpm)curie (Ci)millicurie (mCi)microcurie (µCi)nanocurie (nCi)picocurie (pCi) To becquerel (Bq)kilobecquerel (kBq)megabecquerel (MBq)gigabecquerel (GBq)terabecquerel (TBq)disintegrations per second (dps)disintegrations […]
Acceleration Unit Converter Acceleration Unit Converter Convert between m/s², ft/s², in/s², g, Gal, km/h/s, and mm/s². Value From meter per second² (m/s²)foot per second² (ft/s²)inch per second² (in/s²)standard gravity (g)Gal (cm/s²)km/h per s (km/h/s)millimeter per second² (mm/s²) To meter per second² (m/s²)foot per second² (ft/s²)inch per second² (in/s²)standard gravity (g)Gal (cm/s²)km/h per s (km/h/s)millimeter per […]
Absorptivity Unit Converter Absorptivity Unit Converter Convert between fraction (0–1), percent (%), permille (‰), and ppm. Value From Fraction (0–1)Percent (%)Permille (‰)ppm To Fraction (0–1)Percent (%)Permille (‰)ppm Decimals Clamp to valid range? Yes (0–1 fraction)No (allow any) Convert Reset Converted Value Unit Symbol Value Absorptivity is dimensionless (typical range 0–1). 0% = no absorption, 100% […]
PPD Calculator PPD Calculator Enter PMV to compute PPD (ISO 7730 / ASHRAE 55) PMV Decimals Calculate Reset Result PPD (%) — PPD = 100 − 95·e^(−0.03353·PMV⁴ − 0.2179·PMV²) Other HVAC-related calculators.. To simulate the 3D detailed flow and thermal behavior of HVAC system, we develop a dedicated simulation software for non CFD expert. Learn […]