Indoor Environment
Temperature, humidity, and CO2 comfort levels
Comfortable indoor conditions: 20-26°C, 40-60% humidity. CO2 levels above 1000ppm can cause drowsiness.
Frequently asked questions
How many milligrams of sodium are in 1 gram of salt?
About 393 mg of sodium per 1 g of salt (NaCl). Conversion: salt (g) = sodium (mg) × 2.54 ÷ 1000.
How do I convert Celsius to Fahrenheit?
°F = °C × 9 / 5 + 32. Example: 200 °C = 392 °F. To go the other way: °C = (°F − 32) × 5 / 9.
How do I estimate electricity cost from watts and hours?
kWh = watts × hours ÷ 1000. Cost = kWh × unit price. Example: 1500 W × 1 h = 1.5 kWh; at 31 JPY/kWh that is about 47 JPY.
How do I calculate calories burned from METs?
kcal ≈ METs × body weight (kg) × time (h) × 1.05. Example: 5 METs × 60 kg × 1 h × 1.05 ≈ 315 kcal.
How much pure alcohol is in a 350 mL beer at 5% ABV?
Pure alcohol (g) = volume (mL) × ABV ÷ 100 × 0.8. 350 × 5 ÷ 100 × 0.8 ≈ 14 g, about 1.4 Japanese standard drinks (10 g/drink).
How many sugar cubes are in a 500 mL bottle of cola?
A regular 500 mL cola contains about 56 g of sugar, which is roughly 14 sugar cubes at 4 g per cube.
How much caffeine is in one cup of drip coffee?
About 90 mg per 150 mL cup of drip coffee. EFSA's general adult guideline is up to 400 mg per day (and up to 200 mg per single dose).
What is BMI and how is it calculated?
BMI (Body Mass Index) = weight (kg) ÷ height (m)². Example: 70 kg ÷ (1.75 m)² ≈ 22.9. General reference only; not medical advice.
How do I convert km/L to MPG (US)?
MPG (US) ≈ km/L × 2.352. To go back: km/L ≈ MPG × 0.4251. 15 km/L is about 35.3 MPG.
What is the WHO recommended daily limit for salt and free sugars?
WHO recommends less than 5 g/day of salt and less than 10% of total energy from free sugars (ideally below 5%, about 25 g for a 2000 kcal diet).