College Admissions
ENEM Score Calculator
Calculate your weighted average with course-specific weights for Brazil's national exam (ENEM). Includes presets for Medicine, Engineering, Law and more.
Open toolESCOLA DE CIÊNCIA
Interactive calculators and simulators to speed up your study of Biology, Chemistry, Physics and Math.
All tools
Math
Percentages, rule of three, equations, functions, Pythagoras, sequences and statistics.
View hubPhysics
Kinematics, Newton’s Laws, energy, calorimetry, circuits, waves and hydrostatics.
View hubChemistry
Periodic table, stoichiometry, equation balancing, pH, molarity, gases, oxidation numbers and Ksp.
View hubBiology
Genetics, cytology, photosynthesis, cellular respiration, ecology, evolution and metabolism.
View hubAstronomy
Age and weight on other planets, Moon phases, lunar calendar and eclipse simulator.
View hubBiology · Genetics
Punnett Square Calculator
Mono- and dihybrid genetic crosses. Genotypes, phenotypes and offspring ratios based on Mendel's Laws.
Open toolPhysics · Kinematics
Kinematics Calculator
Solve kinematics problems step by step (constant velocity and constant acceleration). Includes Torricelli's equation for cases without time.
Open toolPhysics · Dynamics
Newton's Laws Calculator
F = m·a, net force (vector) and inclined plane with friction. Free step-by-step solutions.
Open toolPhysics · Energy
Mechanical Energy Calculator
Kinetic, gravitational potential and elastic energy, energy conservation and work in a single tool.
Open toolAstronomy
Your Age on Other Planets
How old would you be on Mars, Jupiter or Pluto? Calculated from each planet's orbital period.
Open toolAstronomy
Your Weight on Other Planets
How much you would weigh on each planet, the Moon and the Sun. Teaches the difference between mass and weight.
Open toolAstronomy
Moon Phases and Lunar Calendar
The Moon today, upcoming main phases and a month-by-month lunar calendar with Moon visualization.
Open toolChemistry · Acids and Bases
pH and pOH Calculator
Convert between pH, pOH, [H⁺] and [OH⁻]. Visual scale and pH of everyday substances.
Open toolPhysics · Thermodynamics
Temperature Converter
Convert Celsius, Fahrenheit, Kelvin, Rankine and Réaumur in real time, with reference temperatures.
Open toolChemistry
Periodic Table
Complete interactive periodic table. Data for each element, electron configuration and charts.
Open toolChemistry
Stoichiometry Calculator
Stoichiometry with step-by-step solutions. Mass, moles and volume at STP with purity and yield.
Open tool12 of 45 tools