🧮Calculators
Calculators cover finance, health, math, physics, engineering and everyday life: interest and loans, net salary, BMI, rule of three, conversions and more. Results are informational and educational — for important decisions, confirm with a professional and official sources.
2826 tools
Meat Marinade Time
Suggests ideal marinade time by cut and thickness to avoid breaking fiber.
Pizza Dough Water Temperature
Computes water temperature based on ambient, flour and mixer friction for ideal dough temp.
Cake Yield by Pan Size
Computes slices and dough grams yielded by round pans of various diameters.
Thin Dough Rest Time
Computes rest time for thin doughs (pastry, esfiha) by ambient temperature.
Rice per Person
Computes raw rice grams and water mL per person for light or heavy consumption.
Beans per Person
Estimates raw bean grams per person and recommended soaking time by type.
Frying Oil Temperature
Indicates ideal oil temperature by food type and computes preheat time.
Meat Thaw Time
Computes safe meat thaw time in fridge or cold water by piece weight.
Heart Rate Training Zones
Computes 5 heart rate zones from age and resting HR using Karvonen formula.
VO2 Max Cooper Test
Estimates VO2 max (mL/kg/min) from distance covered in the 12-minute Cooper test.
Run Time from Distance
Computes total run time given distance in km and pace in min/km.
Running Pace
Converts time and distance to pace (min/km) and average speed (km/h).
Swimming Pace per 100 m
Computes swimming pace in min/100m and average speed from time and distance.
Cycling Pace per km
Computes cycling pace in min/km and average speed from time and distance.
Bench Press 1RM (Brzycki)
Estimates one-rep max (1RM) bench press by Brzycki formula.
Bench Press 1RM (Epley)
Estimates one-rep max (1RM) bench press by Epley formula.
Weekly Training Volume Calculator
Calculate your weekly training volume (sets × reps × load) per muscle group. Track total tonnage to progress in hypertrophy and strength.
Cycling Power in Watts
Estimates cycling watts from rider weight, speed and grade.
Running Cadence (spm)
Converts speed and stride into cadence (steps per minute) and shows ideal range.
Cycling Cadence rpm
Computes cycling cadence (rpm) by speed and crank-cog ratio development.
Running Stride Length
Computes running stride length (m) from speed and cadence (spm).
Training TDEE Deficit
Computes total daily energy expenditure (TDEE) and calorie deficit or surplus.
Marathon Time Projected from Half
Projects full marathon time from half marathon using Riegel exponent.
Car Carbon Footprint Calculator
Estimate your car annual carbon footprint from the distance driven and the average fuel consumption. Find out how much CO₂ you emit each year by driving.
Plane Flight Carbon Footprint
Computes per-passenger CO2 emissions on short, medium or long haul flights.
Home Monthly kWh Consumption
Sums monthly kWh consumption of main appliances to estimate the bill.
Solar Water Heater Savings
Estimates yearly savings switching electric shower to solar heater by family usage.
Solar System Sizing by Usage
Sizes solar PV system power (kWp) based on monthly consumption and region irradiance.
Home Battery Storage
Computes battery capacity (kWh) needed for home backup given critical load.
Clothes Sun Dry Time
Estimates clothesline drying time by temperature, humidity and fabric type.
Shower Water Savings
Computes liters saved by shortening shower time and yearly bill impact.
Paper Recycling Trees Saved
Computes trees saved by the amount of paper sent to recycling.
Kitchen Gas Emission Comparison
Compares CO2 emissions between natural gas, LPG and electric for same usage.
EV vs ICE Savings
Compares cost per km between electric and combustion vehicles by yearly distance.
Hair Growth Speed
Estimates how many cm hair grows over a period and time to reach target length.
Nail Growth Speed
Computes nail growth in mm per week and time to fully replace a nail.
Battery AAA vs AA Energy
Compares total energy stored by AAA and AA alkaline batteries in mAh.
Lifetime Breaths
Estimates how many breaths a person takes during life based on age and average rate.
Lifetime Heartbeats
Estimates how many heartbeats a person has over life based on age and average HR.
Toilet Paper Monthly Rolls
Estimates how many toilet paper rolls a family uses per month and year.
Leaves per Tree by Size
Estimates leaves on a tree based on average height and canopy type.
Grass Growth Speed
Estimates daily grass growth in mm/day based on season and time to mow again.
BR Shoe Size from Foot Length cm
Converts foot length in centimeters to Brazilian adult shoe size.
BR Ring Size from Finger Circumference mm
Converts finger circumference in millimeters to Brazilian ring size number.
Bracelet Length from Wrist cm
Suggests bracelet length (with slack) from wrist circumference in centimeters.
BR Bra Size from Bust and Underbust
Calculates BR bra band number and cup letter from bust and underbust in centimeters.
Belt Size from Waist cm
Suggests belt size (S/M/L/XL or numeric) from waist circumference in centimeters.
Dress Shirt Size from Neck cm
Converts neck circumference in cm to Brazilian dress-shirt size.
Pants Size from Waist and Hip cm
Suggests pants size (PP/P/M/G/GG or numeric) from waist and hip in centimeters.
Fabric Quantity per Garment
Estimates meters of fabric needed to sew a garment based on type and size.
Yarn Quantity for Knitting cm
Calculates yarn weight needed for a knitted piece based on width, height and stitch.
Fabric Drying Time on Clothesline
Estimates fabric drying time on a clothesline based on type, temperature and humidity.
Zipper Size for Opening cm
Suggests commercial zipper size based on required opening length in centimeters.
Number of Buttons for Dress Shirt by Size
Suggests number of buttons to make a dress shirt by size.
Skirt Hem Length
Calculates total skirt fabric length needed including hem fold.
Wall Paint Calculator (Liters)
Calculate how many liters of paint you need to cover a wall or room in square meters, including the number of coats. Plan the right amount to buy.
Floor Tile Quantity m2
Calculates boxes of ceramic floor tiles needed for a given area in square meters.
Bathroom Tile Calculator
Calculate the square meters and the number of tile boxes to cover the walls of a rectangular bathroom. Enter the dimensions and get the amount with waste.
Wallpaper Roll Calculator
Calculate how many wallpaper rolls to buy to cover a wall, from the room and roll dimensions. Includes the allowance for pattern matching and cuts.
Sod Slabs for Lawn
Calculates how many sod slabs are needed to cover a lawn area in square meters.