Best Free Online Calculators in 2025
Pokémon Card Checker Find details about any Pokémon card instantly. Enter a card name or number below to check its value, rarity, and more. Search Card Searching Pokémon database… Card Name Set: Unknown Rarity: — Market Price: — Condition: — ❌ Card not found. Try another name or number. How … Read more
Roblox Tax Calculator | Marketplace Fee Calculator Roblox Tax Calculator Calculate marketplace fees and your actual earnings from Roblox sales R$ Item Sale Price (R$): ?Enter the price your item is selling for Item Type: UGC Limited Item (30% fee)Normal Item (30% fee)Developer Product (90% payout)Game Pass (70% payout) Premium … Read more
Blox Fruits Trade Value Calculator Check if your trade is fair! Compare fruits, weapons, and accessories in Roblox Blox Fruits. Your Offer Total Value: 0 VS Their Offer Total Value: 0 Trade Result Add items to compare values! Reset Trade How to Use This Blox Fruits Trade Checker Search items … Read more
Superheat Calculator Measure your HVAC system’s superheat accurately. Prevent compressor damage and improve cooling efficiency. Suction Pressure (psig) Suction Line Temperature (°F) Refrigerant Type R-22R-134aR-404AR-410AR-407C Calculate Superheat Reset Values Superheat Calculation Results Saturation Temperature: — °F Actual Temperature: — °F Superheat: — °F Understanding Your Results Good superheat range: 8-12°F … Read more
Vessel ETD/ETA Calculator Calculate estimated departure and arrival times for vessels between ports worldwide. Departure Port Select Departure PortShanghai, China (CN-SHA)Singapore (SG-SIN)Rotterdam, Netherlands (NL-RTM)Los Angeles, USA (US-LAX)Dubai, UAE (AE-DXB)Hong Kong (HK-HKG)Busan, South Korea (KR-PUS)Tokyo, Japan (JP-TYO)Hamburg, Germany (DE-HAM)Antwerp, Belgium (BE-BRU) Arrival Port Select Arrival PortShanghai, China (CN-SHA)Singapore (SG-SIN)Rotterdam, Netherlands (NL-RTM)Los … Read more
Temperature Difference Calculator Calculate the temperature difference between two measurements in Celsius, Fahrenheit, or Kelvin. Temperature 1: °C°FK Temperature 2: °C°FK Display result in: Same as input°C°FK Absolute value: Yes (always positive)No (show direction) Calculate Difference Temperature Difference Results: Difference: – Temperature 1 in all units: – Temperature 2 in … Read more
Heat Transfer Calculator Calculate heat transfer rates for conduction, convection, and radiation in various materials and conditions. Conduction Convection Radiation Conduction Calculator Material: AirWaterStyrofoamWood (pine)GlassSteel (mild)CopperCustom Custom Thermal Conductivity (W/m·K): Cross-sectional Area (m²): Thickness (m): Temperature Difference (ΔT in °C): Calculate Conduction Results: Heat Transfer Rate: 0 W Thermal Resistance: … Read more
Wet Bulb Calculator Calculate the wet bulb temperature based on air temperature and relative humidity. Air Temperature (°C): Relative Humidity (%): Atmospheric Pressure (hPa): Calculate Wet Bulb Results: Wet Bulb Temperature: – °C Dew Point: – °C Heat Index: – °C About Wet Bulb Temperature Wet bulb temperature is the … Read more
Dew Point Calculator Calculate the dew point temperature based on current temperature and relative humidity. This tool helps meteorologists, HVAC professionals, and homeowners determine when condensation will form. Temperature: °C°F Relative Humidity: % Dew Point Temperature: °C°F Calculate Dew Point Reset How to Use This Dew Point Calculator Enter the … Read more
Relative Humidity Calculator Calculate relative humidity based on temperature and dew point. This tool helps meteorologists, HVAC professionals, and weather enthusiasts determine atmospheric moisture levels. Temperature: °C°F Dew Point: °C°F Relative Humidity: % Calculate Humidity Reset How to Use This Humidity Calculator Enter the current air temperature Enter the dew … Read more