Science & Lab Calculators
Find calculators for chemistry, biology, lab dilution, concentration, osmolarity, genetics, physics, and experimental planning.
This hub collects science and lab calculators that answer formula-heavy questions with focused inputs. Use it for chemistry conversions, dilution and concentration work, osmolarity, genetics, physics relationships, and related lab calculations where accuracy depends on clear assumptions.
Top Calculators In This Cluster
These calculators are pulled from the strongest matching categories so the page can act as a real entry point for search and a deeper browse destination for visitors.
Bone Age Calculator - Greulich & Pyle Method
Compare a bone age already assessed by a clinician with chronological age in years and months. This tool calculates the age difference; it does not read X-rays, determine skeletal maturity or diagnose a condition.
Alcohol Dilution and Mixture Calculator
This calculator helps you determine the alcohol concentration for homemade beverages, including wine, beer, and spirits. It offers safe dilution recommendations and mixing ratio calculations to track alcohol content accurately.
Azimuth Calculator
Calculates the horizontal angle (azimuth) of a celestial body or a point relative to a reference direction (e.g., North).
STP Calculator
Calculates the volume or number of moles of a gas at Standard Temperature and Pressure (STP). STP is defined as 0°C (273.15 K) and 1 atm pressure. This calculator uses the ideal gas law to perform these calculations.
Lever Calculator
Analyzes forces and distances in a lever system based on the fulcrum position.
Melting Point Calculator
Calculates the melting point of a substance based on the provided pressure. This calculator uses a simplified model and is most accurate for substances with well-defined melting points. Note: This calculator provides estimations and should not be used for critical applications.
Osmotic Pressure Calculator
Calculates the osmotic pressure of a solution using the van't Hoff equation. Osmotic pressure is the minimum pressure which needs to be applied to a solution to prevent the inward flow of water across a semipermeable membrane.
Van't Hoff Factor Calculator
Calculates the Van't Hoff factor (i), which represents the number of particles a solute dissociates into in a solution. This factor is important in colligative properties calculations.
Electrical Power Calculator
Calculates electrical power using voltage, current, and resistance, based on the formulas P=VI, P=I²R, and P=V²/R.
Impedance Matching Calculator
Calculates the component values (e.g., in L-networks) needed to match impedances for maximum power transfer.
Breast Cancer Risk Calculator (Gail Model)
Estimates a woman's risk of developing invasive breast cancer over the next 5 years and lifetime. This calculator uses the Gail Model, which considers factors such as age, race, personal history of breast biopsies, family history of breast cancer, and age at first menstrual period and childbirth.
Parts Per Million (PPM) Converter
Convert between PPM and other concentration units like percentage, ppb, ppt, mg/kg, and mg/L (for solutions with a density close to 1 g/mL).
Explore related topics
All topicsWhat makes a calculator fit the science and lab hub?
The calculators here usually involve scientific units, formulas, lab preparation, biology, chemistry, physics, or medical-adjacent estimates that need clear input assumptions.
Can these calculators replace lab protocols or clinical guidance?
No. They are educational and planning tools. Lab protocols, safety rules, and clinical decisions should always be checked against authoritative guidance.