🧮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.
2904 tools
Training Frequency per Muscle
Suggests weekly frequency per muscle based on target volume.
Muscle Recovery Time
Estimates muscle recovery hours from volume, intensity and experience.
VO2 Max Goal in Months
Projects VO2 max from current, monthly gain and target months.
HR Zones for Beginner
Computes 5 HR zones from estimated max HR for beginners.
HR Zones for Elite Athlete
Computes HR zones using Tanaka formula and reserve HR.
Running Cadence by Height
Suggests target stride rate by runner height.
Swim Stroke Cadence (100m)
Estimate the stroke cadence per 100 m in a 25 m pool based on elite swimmer standards. Use it as a reference for your swimming efficiency.
Cycling Cadence RPM by Zone
Suggests RPM by cycling power zone.
Baby Height at 1 Year
Estimate the expected height of a baby at 1 year from weight and the WHO percentile. Track healthy growth in the first months of life.
Child Weight 3y by Height
Estimate the expected weight of a 3-year-old child from height, based on WHO growth percentiles. Track healthy child development.
Child BMI Percentile Calculator
Calculate the BMI of children aged 2 to 5 and see the classification by WHO percentile. Track whether the weight is appropriate for their age.
Head Circumference Baby
Estimates expected head circumference (cm) by months (WHO).
Infant Paracetamol Dose in Millilitres
Calculate the paracetamol dose in drops (200 mg/ml) for babies and children based on weight. A support tool; always confirm with a pediatrician before dosing.
Ibuprofen Child Dose
Calculate the pediatric ibuprofen dose (100mg/5ml suspension) by the child weight, in ml and mg. A support tool for parents and health workers to dose safely.
Pediatric Azithromycin Dose
Calculate the azithromycin dose for children (10 mg/kg/day for 5 days) based on weight. A support tool; always confirm the prescription with a pediatrician.
Baby Formula Amount
Estimates daily formula volume by baby age and per bottle.
Baby Puree Amount
Suggests puree volume and texture by baby age.
Diapers Per Month Calculator
Estimate how many diapers your baby goes through each month based on age. Helps plan your shopping and budget in the first months.
Breastfeeding Time WHO
Shows WHO breastfeeding plan: exclusive to 6m and up to 2y.
Sunscreen Amount per Application
Estimates sunscreen grams per application by skin area covered.
SPF Sun Protection Time
Calculates SPF-based sun protection time in minutes.
Body Moisturizer Amount
Estimates body moisturizer volume per application based on body weight.
Face Cream Amount per Use
Estimates face cream ml per application for adults.
Post-Acne Mark Fading Time
Estimates months to fade post-acne marks (PIH).
Acne Scar Treatment Time
Estimates months of clinical acne scar treatment.
Melasma Treatment Time
Estimate the topical melasma treatment time in months based on severity. Understand how long it takes to fade skin spots and set realistic expectations.
Vitiligo Repigmentation Time
Estimates vitiligo phototherapy repigmentation time.
Vitamin C Serum Percent
Estimates recommended Vitamin C concentration by skin type.
Retinol Serum Percent
Estimates safe retinol concentration by user experience.
Hyaluronic Acid Serum mg
Estimates hyaluronic acid concentration mg/ml in face serum.
Niacinamide Cream Percent
Estimates niacinamide concentration by skin goal.
Panthenol Cream Percent
Estimates panthenol percent by skin irritation severity.
Emerald Grass m2 Amount
Estimates emerald grass sod for residential area.
Sao Carlos Grass m2 Amount
Estimates Sao Carlos grass amount for lawn.
Desert Rose Pot Size
Suggests ideal pot size for desert rose by stem diameter.
Cattleya Orchid Pot Size
Suggests ideal pot size for Cattleya orchid.
Bromeliad Pot Size
Suggests bromeliad pot size by light level.
Succulent Pot Size
Suggests small pot size for succulent plant.
Mandacaru Cactus Pot Size
Suggests pot size for Mandacaru cactus by height.
African Violet Pot Size
Suggests African violet pot size by indirect light.
African Violet Watering Frequency
Suggests watering frequency in days by temperature.
Orchid Watering Frequency
Suggests orchid watering frequency in days by climate.
Succulent Watering Frequency
Suggests succulent watering frequency by climate.
Desert Rose Watering Frequency
Suggests desert rose watering frequency in days.
Azalea Flowering Time
Estimates azalea flowering time in months by temperature.
Tilapia Tank Stocking
Estimates tilapia biomass kg per tank volume.
Tambaqui Tank Stocking
Calculate the ideal tambaqui stocking density (kg per tank volume). Avoid overcrowding and maximize production in your fish farm.
Pacu Tank Stocking
Calculate the ideal pacu stocking density (kg per tank volume). Avoid overcrowding and maximize production in your fish farm.
Pintado Tank Stocking
Calculate the ideal pintado catfish stocking density (kg per tank volume). Avoid overcrowding and maximize production in your fish farm.
Cachara Tank Stocking
Estimates cachara biomass kg per tank volume.
Pintado Real Tank Stocking
Estimates pintado real biomass kg per tank volume.
Shrimp Tank Stocking
Estimates shrimp biomass grams per tank volume.
Aquaculture Feed Daily kg
Estimates daily feed kg by tank biomass.
Tilapia Growout Time
Estimate the tilapia growout time in months to reach slaughter weight based on water temperature. Plan your fish farming production cycle.
Tambaqui Growout Time
Estimates tambaqui growout months by water temperature.
Shrimp Growout Time
Estimate the shrimp growout time in months to reach harvest weight based on water temperature. Plan your shrimp farming production cycle.
Tank Oxygen Demand
Estimates oxygen demand mg/min by tank biomass.
Army Retirement Time BR
Estimates Brazilian Army retirement years by current service time.
Navy Retirement Time BR
Estimate how many years are left until your retirement in the Brazilian Navy based on your service time. Plan your move to the reserve.
Air Force Retirement Time BR
Estimates Brazilian Air Force retirement years.