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Can't decide? Enter your options and let the app pick one ...
Generate random colors and display their HEX, RGB, and HSL ...
Generate one or more random dates within a specified range. ...
Estimate heat loss through walls, ceiling, and windows. Use ...
Estimate BTU/hr needed to heat a space based on area and ...
Calculate buffer pH using the Henderson-Hasselbalch ...
Calculate high school GPA from letter grades with optional ...
Calculate total annual home CO2 emissions from electricity, ...
Solve for spring constant, force, or displacement using ...
Convert horsepower and RPM to engine torque. Use this free ...
Calculate the number of usable hosts in a subnet from a ...
Estimate gross and net profit for a house flip. Use this ...
Encode text to HTML entities or decode HTML entities back ...
Convert human age to cat years. Use this free browser-based ...
Convert human years to dog years using the logarithmic age ...
Estimate humidifier output (gallons/day) needed for a home. ...
Calculate required HVAC tonnage for a home or commercial ...
Calculate [H⁺] concentration from pH. Use this free ...
Calculate [OH⁻] concentration from pOH or pH. Use this free ...
Solve the ideal gas law (PV = nRT) for any unknown ...
Calculate impulse from force and time, or from change in ...
Calculate insulation area coverage needed for walls, ...
Calculate total R-value of a wall or ceiling assembly. Use ...
Calculate IQR and detect outliers using the 1.5×IQR rule. ...
Calculate subnet details from an IP address and CIDR ...
Convert an IPv4 start/end address range to CIDR blocks and ...
Estimate water needed to irrigate a lawn or garden area. ...
XTRAW Tools
Free calculators, converters, generators, and simple apps for everyday decisions.
XTRAW Tools
Free calculators, converters, generators, and simple apps for everyday decisions.