Popular Calculators

Vehicle and Practical Calculators

fuel usage calculator

Calculate fuel usage, fuel economy, and trip cost with a fast fuel usage calculator for cars, bikes, trucks, and daily travel planning.

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Construction and Home

furnace size calculator

Use this furnace size calculator to estimate BTU needs by home size, climate, insulation, ceiling height, and efficiency.

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Electrical & Solar

Fuse Size Calculator

Calculate the recommended fuse size from current or power, voltage and safety factor. Fast fuse sizing calculator for DC and AC circuits.

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Finance

Future Value Calculator

Use our Future Value Calculator to estimate investment growth with compound interest, regular contributions, rates, and detailed yearly results.

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Construction and Home

Garden Soil Calculator

Calculate garden soil volume, bags, cubic yards, and estimated cost for rectangular, circular, or raised garden beds.

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Chemistry

Gas Density Calculator

Calculate gas density from molar mass, pressure, and temperature using the ideal gas law. Get fast results in g/L with formulas and examples.

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Finance

gate calculator

Use this free GATE calculator to calculate marks, negative marking, accuracy, percentage and estimated GATE score instantly.

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Data Converter

GB to MB Converter

Convert gigabytes to megabytes instantly using binary or decimal standards for file size, storage planning, uploads, and data reports.

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Data Converter

GB to TB Converter

Convert GB to TB online instantly. Enter gigabytes and get accurate terabytes using decimal or binary calculation in a clean free tool.

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Math

GCD/LCM Calculator

Calculate GCD and LCM of two or more numbers instantly with this free, accurate, and easy-to-use GCD/LCM Calculator.

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Physics & Engineering

Gear Inches Calculator

Calculate bicycle gear inches, gear ratio, rollout distance, or wheel diameter using chainring teeth, rear cog teeth, and wheel size.

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Automotive and Transport

Gear Ratio Calculator

Calculate gear ratio, output RPM, torque multiplication, speed change, and rotation direction using driving and driven gear teeth.

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Electrical Calculators

Generator Size Calculator

Calculate the right generator size in kW and kVA using appliance loads, starting watts, power factor and a safety margin for home or business use.

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Math

Geometric Mean Calculator

Calculate the geometric mean of positive numbers instantly. Enter multiple values, view the formula, product, count, and step-by-step results.

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Math

Geometric Sequence Calculator

Calculate geometric sequence terms, finite sums, infinite sums, common ratios, and sequence values instantly with formulas and examples.

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Health & Fitness

Gestational Age Calculator

Use our Gestational Age Calculator to find your current pregnancy week, trimester, and estimated due date based on your last menstrual period.

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Chemistry

Gibbs Free Energy Calculator

Calculate Gibbs free energy from enthalpy, entropy, and temperature. Find ΔG instantly and check whether a process is thermodynamically favorable.

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Age and Conversion Calculators

gp calculator

Thousands of free online calculators and converters for math, finance, health, science, and everyday life. Fast, accurate, and always free.

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Education

GPA Calculator

Free online GPA Calculator to compute your semester or cumulative GPA from grades and credit hours. Accurate, fast, and easy to use.

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Vehicle and Practical Calculators

gpm calculator

Use this GPM calculator to find gallons per minute from volume and time, or estimate water flow from pipe size and velocity with instant results.

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Education

Grade Calculator

Free online Grade Calculator to compute weighted average, GPA, and final grades instantly. Accurate, fast, and easy to use.

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Math

gradient calculator

Thousands of free online calculators and converters for math, finance, health, science, and everyday life. Fast, accurate, and always free.

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Construction

Grass Seed Calculator

Calculate grass seed needed from lawn area, seeding rate, waste allowance, bag size, overseeding or new lawn mode, and estimated cost.

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Finance

Gratuity Calculator

Use our Gratuity Calculator to estimate employee gratuity based on salary, service years, and working days with a clear calculation breakdown.

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