Best Free Online Calculators in 2025
Subcooling Calculator Measure your refrigerant’s subcooling level. Enter your system measurements below. Get accurate results instantly. Liquid Line Temperature (°F) Saturation Temperature (°F) Refrigerant Type Select refrigerantR-22R-134aR-404AR-410AR-407COther Calculate Subcooling Subcooling Results Subcooling Value: 0 °F System Status: – What This Means 0-5°F: Low subcooling (Possible undercharge) 6-12°F: Ideal range (Proper … Read more
Cooling Load Calculator Estimate the cooling capacity needed for your space. Get results in BTU/hr and tons. Room Information Room Length (ft) Room Width (ft) Ceiling Height (ft) Number of People Environmental Factors Climate Zone Hot/HumidWarmModerateCool Sun Exposure Heavy SunModerate SunShaded Insulation Quality PoorAverageExcellent Appliance Heat (watts) Calculate Cooling Load … Read more
Manual D Duct Sizing Calculator Calculate proper duct sizes for HVAC systems. Based on ACCA Manual D standards. System Information Airflow (CFM) Duct Type Flexible DuctSheet MetalFiberglass Duct Friction Rate (in. wg/100ft) 0.08 (Low Velocity)0.1 (Standard)0.12 (High Velocity) Duct Dimensions Duct Shape RoundRectangular Diameter (inches) Width (inches) Height (inches) Duct … Read more
Manual J HVAC Load Calculator Estimate heating and cooling loads for residential buildings. Follows ACCA Manual J standards. Building Information Total Square Footage (ft²) Average Ceiling Height (ft) Climate Zone 1 – Very Hot2 – Hot3 – Warm4 – Mixed5 – Cool6 – Cold7 – Very Cold Construction Details Wall … Read more
Elden Ring Rune Calculator | Plan Your Character Leveling ELDEN RING RUNE CALCULATOR Plan your character progression and calculate exact rune requirements ✠ Current Level: Target Level: Current Runes: ?Enter how many runes you currently have (optional) Calculate Runes Needed RUNES REQUIRED TOTAL RUNES NEEDED 0 RUNES TO COLLECT 0 … Read more
Harvard Graphing Tool | Academic Data Visualization Harvard Graphing Tool Create professional academic graphs following Harvard University visualization standards Graph Type: Bar GraphLine GraphPie ChartScatter Plot Graph Title: X-Axis Label: Y-Axis Label: Enter Data (CSV format): ?Format: Category,Value for bar/pie. X,Y for line/scatter. One pair per line. Category A,30 Category … Read more
Path of Exile DPS Calculator | PoE Damage Per Second Tool PATH OF EXILE DPS CALCULATOR Calculate your damage per second with precision for any skill gem ⚔️ Skill Type: AttackSpellDamage Over Time Average Base Damage: ?Enter your skill’s average damage before modifiers Attack/Cast Rate: ?Attacks per second for attacks, … Read more
Cubic Meters ⇄ Grams Converter Convert between volume and weight measurements. Perfect for chemistry, cooking, and material science. Cubic Meters (m³) Grams (g) Material Density Select MaterialHelium Gas (0.598 g/L)Air (1.225 g/L)Water (1000 g/L)Mercury (13600 g/L)Aluminum (2700 g/L) Custom Density (g/L) 1 m³ of water = 1,000,000 grams How This … Read more
Cubic Meters ⇄ Drops Converter Convert between large volume measurements and precise drop counts. Useful for medical, chemical, and laboratory applications. Cubic Meters (m³) Drops (gtt) Drop Type: Medical (20 drops/mL) Standard (15 drops/mL) Custom Drop Size: 1 cubic meter = 20,000,000 medical drops About This Converter This tool converts … Read more
Cubic Meters ⇄ Pounds Converter Convert between volume and weight measurements. Useful for shipping, construction, and material handling. Cubic Meters (m³) Pounds (lbs) Material Density Select MaterialFoam (10 lbs/ft³)Wood (30 lbs/ft³)Water (62.4 lbs/ft³)Aluminum (168 lbs/ft³)Steel (490 lbs/ft³) or Custom: kg/m³ Enter values to see conversion How to Use This Tool … Read more